Doctoral Student of Chemistry Poisons Apartment of 'Noisy' Neighbors | Xuming Li Case Analysis 

Thank you. I was like this is so bizarre, how would those drugs cause these symptoms. Thank God the baby didn't touch any of the crap he was squirting in there. It definitely would have killed her.

*IN CASE

@@Flamsterette Wow! So helpful to let us all know about the simple but obvious typo.

thats a good point, however i dont think the opiates would enter the occupants body from liquid near the door. I think the purpose was knowing that the smell/liquid/residue may be discovered. its just enough to trigger a police testing kit, with how strict China is, he probably thought that when theyd go to the police, about an unknown substance, theyd test it, detect trace amounts of drugs and put them in jail, regardless of circumstances. Its just a cover for testing kits, that once the drug is detected theyd be in jail and looked down on, and no further testing would be conducted.

@@It-is-me...Melsie I refuse to enable bad spelling and grammar.

Some psychopaths can completely switch personalities from one family to another.

He's a psychopath, he's calculated

Technically he's attempting to improve the living standards for his own family, at the cost of another. If anything, it shows he's willing to expend more effort and risk, compared to others, so your comment isn't fair. It's the same as suggesting employing self defence methods suggests you attack your own family, which makes no sense.

@@Kelthor85maybe you’re coping with being similar to this guy😂 at no point does Grande state that the FAMILY had ill will towards the noise. He stated HE HIMSELF was woken up by noise. Psychopaths are selfish in nature u fk!!

@@blakewright3589 Apparently this psychopath preferred murder and/or jail to earplugs.

He assaulted everyone living there, as well as any potential visitors, maintenance workers, etc.

Could also be considered terrorism

The victims are muslim, that‘s why they don‘t care.

Maybe he got some sort of plea. I'm discouraged too..

Murder is VERY serious and all angles have to be looked at before we use it to pin on someone. In my opinion this was not attempted murder. He was using irritants to make them move out and I think his intent was always to make them move out, not kill anyone. We have to look at the gravity of the crime here. A lot of neighbor disturbances end with someone shooting someone directly.

Very well said 👏👏👏 Can you imagine how he's feeling now kicked out of chemistry school his career ? I don't think it's his last time either. Tick tock tick💣💥😳

use ear plugs

@@johnloza-ix5te Stupid comment. Earplugs don't work when someone turns on really loud bass, or is just literally partying right outside youe room. Some students have sleep problems (I wasn't even one of them), and those can't even tolerate half the noice. When it's legal to party, I let people party. If they are way over the top. Fuck them, I have myself to care about

You can order literally anything in relatively small quantities if it's for research purposes.

@@cee-emm We had a "radioactive waste" bucket in our physics lab... much easier to get something in university, and pretty sure a regular person wouldn't be able to order THAT. There was all lind of toxic stuff in pretty large amounts at uni. Plus, what really harmful substances can a regular person juatify with "research purposes"?

Yeah people getting locked up for chemicals yet he’s out smh

He's a psychopath.

It's a war crime to use chemicals but he gets bail. Lmfao

He sounds as if he's a Chinese citizen. Yank his visa and ship him home.

He knows how to weaponize dangerous substances and is suspected of attacking a child. And they let him out undr bail ? Really ?

If he wanted to kill them he easily could have. He was trying to make them sick from an unknown source so they would move. The hydrocodone and the methadone were red herrings should they go to the doctor and get a tox report. When opiates show up on the first screen they're immediately discredited, and the pathologist will look no further.

I wonder if he’d been able to obtain a dose of Anthrax or such. Remember those Tokyo subway attacks.

@@A.Krispy He doesn't need to obtain anthrax, he could easily make it. If he wanted to kill them, he easily could have.

​@@ElSantoLuchador Not to be that guy, but Anthrax is a bacterium. You can't make bacteria.

Oh, Hell Yeah!🤬! Narcissistic / Controlling / Total Disregard For Other People. He needs to do about 5 to 7 years and encouraged to seek psychiatric treatment while imprisoned.😠. Brand New Baby! WTF!🤷‍♂️🤦🤷‍♂️

Some people don’t know how good they have it with quiet, considerate neighbors who have positions of responsibility that require them to be very stable and go to sleep early.

... Ghosts 👻

Maybe rats in the walls? Here in AZ the pack rats sound like a bunch of people running around when just one gets into the attic!

i need to know whyyy he thought there were kids

The same thing happened to my mother. She was in her 70s at the time and dealing with some serious health issues. Occasionally two of her grandkids would come and stay with her on the week-end. Her downstairs neighbour complained relentlessly about the noise - both to her and the strata council. My mom never, ever let the kids run around the apartment. They finally realized what a liar he was when he presented a list of dates the kids were supposedly noisy - and they hadn't even been at my mom's place on those dates!!

Should have been attempted murder.

I would have given this sociopath a bottle of earplugs.

What evidence gives anyone the impression that it was attempted murder? I don’t mind people speculating such things - for sport, but it seems like you all are implying that it’s obvious what his intentions were, as though there’s little room for any other possibility. I can think of a dozen intentions that don’t involve death. Yes a possible outcome could be death, and yes it’s possible that he didn’t care if his actions could/would lead to their death…but then that becomes an involuntary/reckless homicide/manslaughter charge - not murder, not intentional. Besides, he added a noxious element to the mix - which contradicts any intentions of killing someone over time. A murderer, using chemicals, that takes weeks/months to be effective, would not complete their task if the victims were always aware of the source and presence of the poisoning.

He should be charged with three counts of attempted murder if the unknown ingredient ends up being a toxic poison that would have killed the entire family if he hadn’t been caught.

In order to prosecute for attempted murder the unknown substance need to be identified as known toxin that can reasonably cause lethal harm. Persecution can’t merely speculate. Burglary seems out of place though, he did not even entered the apartment yet alone stole anything this will be dropped in court, seems an overcharging by prosecution as they not entire sure how to define the act. I also don’t understand what sort of effect he was trying to do with narcotics it’s not like you can make them into vapor phase that easily. The unknown substance might be some sort of solvent that he intended to turn the morphine based drugs into vapor to pacify the family. Fentanyl can be used in this capacity, it’s rather difficult though, but it still dosn’t explain the terrible smell perhaps his knowledge of chemistry was not as sharp as he believed.

Really though, yes. I agree.

I wonder if he's ever done this before.

The so called American justice system do not want to upset China 🇨🇳 the man will go back to his home land unchecked and unchallenged.

Wow I’m so sorry she’s sleazily jealous and straight demonic ! Happy she’s gone x

I dunno. He looked like he wasn't tall. Maybe he was a short nutcase?

Good question. That is definitely first degree assault and more.

I only hope that they are reserving those charges for when they have obtained even more evidence and delaying charging him with these somehow enables prosecutors to ensure he cannot possibly escape punishment for those crimes.

@@Liliarthan an update for you: he was deported back to China. Awesome!

@@operandexpanse wow, thank you! That’s good news.

Clearly it wasn't any perceived noise...he could have just slept with earplugs in. As I do. Due to noisy neighbors, and in the past, roommates.

I know it's not fair to paint him with a brush because of where he's from but Chinese are extremely racist, generally speaking.

He probably was angry that he didn't get into medical school and had to get the Ph.D. in chemistry to satisfy the expectations of his parents/family.

Well he bought the girl a dress...and asked the dad how she was doing ? He just sounds like a crazy bastard

@@Aaron-kj8dvamericans are extremely racists, 2020 and george floyd protest showed that

Yea that was on forensic files too, him and his wife were involved in murder mystery games, i think the wife was involved in that case. They both had very high IQs and were considered geniuses

​@@allday-xx4zwdid the victims test positive for opiates? Im not sure how it would get in their system

Sounds like thallium.

@@allday-xx4zwif he aerosolized the mixture, it would’ve been airborne & easily inhaled as evidenced by the baby coughing, the bad smell & irritated eyes. Whatever it was got absorbed through mucus membranes in the nose, eyes & mouth & also inhaled.

Did that 1988 case involve strychnine? I think that was common in poisons back then.

You have to realize alot of people that practice breeding practice THIER culture, on this land, with our rules.are you truly stupid or just bored?

"bugpeople" is a very unfair pejorative for mainlanders that probably came about for no reason

​@@livinthehighlife93stupidest comment I've seen all year

@@livinthehighlife93 Racist.

@@livinthehighlife93 What???!!! I'm not Asian, but that statement is untrue and dangerous.

who knows , i have had noisy neighbors and they had straight up lied to the landlord about trying to be quieter. i’m not saying what he did with chemicals is right but i don’t trust the family’s side 100% either.

What if it was cockroaches? We only have a one sided story from this african guy.

@@tienglongmy _"one-sided story"_ Caught in 4K on video? Bangladeshi African?

@@tienglongmyyou had me in the first half 😅

@@Hypno_BPM The landlord heard the noise too and said it wasn't excessive.

I always get a top floor end unit, with the bedroom on an outside wall. I won’t waste my time looking at anything else.

Or get earplugs?

When I had an apartment, I slept with ear plugs and put noise canceling headphones that played white noise over them. I’m a very light sleeper unfortunately.

White noise may help. I usually sleep with the TV on. That’s made me less sensitive to noise over time when I’m sleeping.

Yikes, I am sorry you had that as a mother. Sounds horrible. I hope you have recovered.

Sounds like mine, too. She was a very light sleeper

Yeah, these were members of Mensa, right? This story was excellently covered by Mr.Ballen.

If you enjoy "mr.ballen" you probably enjoy having an LP player playing the sound of nails on a chalkboard when you're going to sleep.

I remember this from Unsolved Mysteries... or Forensic Files, one of those. That was an interesting story.

He didn't poison them just because of loud music. The entire family were loud, obnoxious, and disrespectful. The couple owned their house and had lived there forever. It was a quiet neighborhood until this new family moved in. "Neighbor problems" get very violent, pretty fast. Watch "Fear thy neighbor". Once one person feels disrespected, they usually do shit back and forth until it ends badly for everyone. Anyway, I don't feel bad for the family in that case with the Coke. They were horrible. All they had to do was be decent Neighbors. In this case, the Chinese guy was a complete POS psychopath. I hate loud, obnoxious neighbors. I refuse to live in an apartment around a lot of people. Apartments are not built well, to keep people happy. They are thrown together to make a lot of money and too often you can hear too much. In this case though.....if these people did all these things to try and keep the peace, and be quiet, then he is most definitely the assh*le. This really seems like a "no bail" situation. He is absolutely a danger to anyone that annoys him. He shouldn't live in an apartment then. Or move to the top floor so no one is above him. He has 2 kids, I bet he doesn't give a shit that his family is probably really loud to his downstairs neighbors. It is really weird that he waited to fill the syringe until he was by the door. Wouldn't you fill it in the house, then just bring the syringe with you? It was like a movie, the villian loading up a syringe where anyone could see him. I hope the victim family is doing well and has no long term problems. I hope this POS goes to prison.

@@elijahjakobsen7898 Well, we all have our opinions, right? I think he’s an excellent storyteller, who’s gotten so much better as time goes by.

Thalium??

I'd recommend being a bit more vigilant with your use of the word "egregious"

explain teacher@@jordydrop

Oh god, the poor dog. I hope it's okay. I have no time for people who hate animals.

Yeah, stay away from apartments if you can. Poor neighbor and dog.

Wow wtf

My neighbour has a poodle cross. Cute as can be but it's bark is so shrill it travels through my entire house and it has woken me up every single day since they moved in over a year ago. I have spoken to them about it and keep the dog quiet but it only takes 1 or 2 barks and I'm awake already. As a shift worker I haven't slept more than 5 hours a night. The saddest part is I moved into my dream home loved it for 6 months now I have dark thoughts about that dog and I'm a dog lover by nature. There a 2 sides to every story

@@dougrogan379 Cruelly poisoning a dog makes for only one side. There is no excuse.

Sarin is a great thought, but it's odorless. It's scary that we have to worry about more than convicted sex offenders in our neighborhoods.

This guy is for sure a psychopath and will do something like this again. If I was that family I would be so scared he would retaliate for getting him in trouble, as they should have, he deserved it. Seems like a narcissist psychopath and people like that don’t change. I pray the family doesn’t have lasting health problems, especially the little innocent baby. Sick anyone would ever knowingly hurt a baby.

@@HeatherHolt Agree that he is probably on the ASPD spectrum. Btw, all psychopaths/people on the ASPD spectrum are narcissistic. Hence it is a bit redundant putting them together--sort of like saying ATM machine.

Dr Jekyll Mr. Hyde.

​@@trialgoddessShould we have a biohazard chemical offender registry?

He did not walk away in a triumphant or satisfied way, he just walked away quickly incase they came out. He is trying to not get caught so his body language is exactly as it would be predicted.

LOLOLOL @ “or do I have to do everything”

You came up with the idea so it's your job now! Lucky dog! 😂

You can start by sniffing him

Yeah. Hard to believe he made it to the age of 36 without wigging out on anyone, only to try and murder a baby and her parents. Seems more like the crazy stunt someone would "Graduate" to rather than an Entry Level psycho move.

@@thatisabsolutelykooooge2211😂😂

Every sound is a noise directed against them they think

maybe she was autistic with extreme sensory issues. help and support would be better than judgement.

@@abody499 they are judgmental about sound emitters other people

Or should I say other sound emitters

Some people are just hypersensitive to noise. My brother-in-law constantly wore a pair of old headphones when my niece & nephew were kids to block out their noise. I see it as just another 'thing', like hypersensitivity to light or allergies to certain drugs ... just different brain wiring &/or chemistry. Though I don't know what was going on with this dude in the video.

Yes, I wonder did he try any noise cancelling measures for himself, or just complain? Ear plugs, white noise, etc. or just straight to poisoning his neighbors??

Especially from the sounds of it (no pun intended) it didn’t even seem like they were even making much noise to start with? Note it’s never stated the wife complained to them about the noise. But guys clearly crazy , she probably can’t do anything 💀

Yes! Demonic and clearly jealous of the baby and happy family . Sick

My husband and I lived in a small apartment while we attended law school. We thought the next door neighbor's large cat had unusual "meowing" sounds until we realized she (neighbor) made the sounds while in the throes of passion with the boyfriend du jour (or du/de nuit?).

Good point about the cheap, shoddy construction. I lived in a new building, and could hear the neighbors’ cabinets slamming. They were not slamming them, but the design of the cabinets and the building construction were so bad you needed to deliberately keep hold of the cabinet handles and close the doors quietly in order not to make a lot of noise.

Wrong and wrong. This is America. Not that shithole country you fled. All building projects must meet the same building codes. You're going to hear noise in an apartment just like you would in another part of your house. If you don't like hearing other people's noise. Get a private home or build a cabin in the woods.

I dunno mate, guy was a phd student. Probably wasn't a criminal up until that point

Yeah, maybe he focused all his stress on the neighbour (& he was going through the most sressful time of his degree). I'm surprised he was complaining about footsteps & not the crying baby.

His own family probably created noise for the neighbors, too.

In this case, being too stressed is no excuse for his intentional harmful actions.

@@vicksenful My neighbors had a baby. I never heard it cry, but they woke me up at 2 am every single day. I think they were slamming the drawer of a changing table I imagine was on the other side of my bedroom wall.

I gate to say it but i hope he slips up and does it again so they would put him in jail or out of the country...

I lived above this retiree about thirty years ago. It was a three floor building owned by a doctor who had a surgery in the front. Nice property with a courtyard that backed onto an art museum. I think the old guy got cheap rent for doing caretaking stuff. I think this made him believe he had some kind of jurisdiction over the property and he would scream and carry on about percieved noise. He would put a radio on full volume and hold it to the ceiling. Eventually I had it with his harassment and decided to move. I had a garage sale in the courtyard to get rid of stuff and he came out and kicked everything violently and screamed in front of people. He was out of his mind. Well the old f*** will be dead now but a lot of neighbors are loose units and a danger from my experience.

Omg. This is terrible.

I had this exact same situation in the post happen to me. Well I don't know what was the substance but it was this yellowish sticky goo in tiny blotches all around the house. It started happening when I lost a set of keys and didn't change the locks. I still don't know who or why, but a few times when I had been away for a day or two, I'd come home and be hit in the face with this super pungent chemical smell. It burned in the throat and made my skin beet red, and I would lose consciousness. The smell came from these yellowish gunk splotches that were both visible and hidden all over my apartment, they would fume worse if it was a hot day. When they had given all of their fumes, the blotches would dry out leaving this white powdery substance and burned marks on some surfaces. It was a hell to get rid of it and after the first time I didn't contact anyone but after the second time my landlord gave me an another apartment started investigating it. If I would be losing consciousness because of the fumes, it would ease as soon as I laid on the floor since the gases wouldn't stay there. Also my skin would stay red for days and I could like taste the stuff oozing through my skin and to through my tongue in my mouth, it was pure hell!!! Still don't know what it was, I was hoping someone could take an educated guess??

Had an old person always micromanaging us. We weren't loud and always considerate of our neighbors. My home is a place of quiet and comfort. But my neighbor would say he hates it when we turn on the bathroom vent. He can't stand that noise. Well everyone has a automatic bathroom vent when turned on. I dont get it.

No shit

Construction makes a huge difference! I very rarely hear my neighbours and I'm in a 6th floor apartment.

Well id hope not

Just buy a house

And what happened when the next neighbour moved in? Let me guess, it was noisy again?

It's not his family's or his community's fault, I don't see why they should be disgraced.

One word.. Chinese!!

@@sheilagravely5621 Most Chinese people are decent, some are good and some are bad. Just like people of every ethnicity. It's the CCP that is horrible, just like Leftists in this country.

Are you saying ac and inhalers are carcinogenic? I'll Google.

I knew this had to do with the victims being very bad neighborns

@@lilsyevasifuentes7628 Did you not listen? They weren't bad neighbours at all. In fact they showed more patience than most would have, and appeared to go to a lot of effort to appease the pscyho.

at times? I think often. I have my own theories as to why, but I'm not sure I buy the myth of really any genius criminal.

you don't work with Asians much? I have lots weird of stories. Like my college professor who said his Chinese professor tried to deny him his doctorate because he was Indian.

"wisdom??" I'm not sure what that has to do with anything here. This guy is probably delusional, psychotic, and suffering from multiple personality disorders.

Would this be considered a war crime under the Geneva convention ?

@@pashon4percushonokay so it’s not just me, because I have some crazy stories too.

Asuming he even was vindictive, its not clear what his motivation was.

​@@clmBerserkermotive or no motive, it still does not justify poisioning a neighbor. Poisioning a human or an animal for that matter is unacceptable in my books no matter the circumstances.

I agree. The whole plan was too well thought out for it to have just hatched. There were likely other times and this is just the first time he was caught! Cheers to the husband for setting up that camera.

@@pennyc7064 I never said it was justified just that his motivation dosent have to be some form of revenge, could be some controll thing or something else. It dident sound like the family did anything to provoke him, even sounded like they went out of their way to try to appease him.

@@clmBerserker You're joking. Right?

If you can't type without punctuation, I suggest YOU START NOW.

@@Flamsterette Get a life

That’s how even “luxury” places are built now.

Asian men are more dangerous than we thought. They aren't confrontational, they prefer underhanded sneak attacks like chemicals. They are not a model minority, China has the right idea to keep them in check - look at how entitled incels are today. Thank God, Asian women have come to their senses and refuse to breed with them

I don't have a lot of experience or knowledge of chinese people except I shared student accommodation with a chinese guy from Hong Kong for 3 years and he was a great person. However he grew up in Hong Kong when it was Uk colony and also in the UK. I read somewhere that chines culture sets great store on not 'making trouble' so maybe this person considered making minimal noise as wild and anti social behaviour. Stereotypes can be misleading. Maybe he never set foot in China. :) A person from china could enlighten us.

Yup it was a really good idea he callee the fire department's hazmat team

I guarantee you, I would’ve died before figuring it out

Like the Sacklers...

He might even invent a covid variant.

@@elizabethannegrey6285 that doesn't have ANY antidote...or a worse strain of ebola.

Some people who never lived in an apartmentbilding before but grew up in a one family home get stressed when they hear noises around them from other apartments. No solution but to get used to it or move

I thought the same. Even walking in the streets they are packed in like sardines.

Yeah same thoughts here

Super racist comment.

My thought exactly. He was just looking for a reason to harm this family. Was his thesis about poisoning maybe. They were his case study.

@@pjnix5618 lol "Super racist" How??

That guy is a psychopath.

Yes! Who is intentionally noisy and slamming things around a toddler everyone wants to sleep …

Or long term effects! Sorry, couldn't help myself

@@skachorSo many people nowadays misspell words and use incorrect ones. "Affect" and "Effect" have two different meanings, and if someone uses these words incorrectly, misunderstandings can occur. Aren't other people concerned about this?

@@marcellepesek3038 it's a concern, as well as being civil, trying not to offend people, trying not to be offensive, etc...

​@@marcellepesek3038I concur. However, I must point out that since there is an unknown substance or substances involved, there is potential to have affects as effects.

I also thought that it was going to be a story where he lost his mind as a result of repeated sleep deprivation with a new baby above and believing that the upstairs neighbours were completely inconsiderate (and I've also gotten really angry about neighbour noise repeatedly at 3am that I thought they should have known better) so I was shocked to hear that they had even tried to address the noise complaints in this case. But in his mind, he still believed the neighbour was making the noises, I bet. Maybe some paranoid delusions. Of course, that doesn't make it any better. But I don't know if he just spontaneously decided to attack a family for no reason - I'm guessing what he was complaining about felt real in his head.

Yes, I'm not excusing his criminal behavior but I've had some awful neighbors too. One would blast his music at 4a during weekdays. I called the police on him a few times and with management until they kicked him out and recently I had an issue with a neighbor smoking pot. The smoke and stink would permeate to my whole unit. I read my contract and called management several times until they sent an email to cease and desist. So far so good. I've been able to breathe fresh air in my unit again. Still, I would never try to do anything criminal against anybody. The extreme thing I thought about doing was to move out but it's scary to move out too with rents being so high everywhere.

I couldn't agree more with you.

This may have helped his family. I sure he is hard to live with. Controlling demanding his selfish rules. Maybe if true his wife will have the strength to move on to a better life for herself and children??

Prison, then deported straight back to China.

I have had noisy neighbours so noisy that neither earplugs not noise canceling headphones really worked. Some people are really loud. There can also be issues with vibrations (loud techno or hard kicks on the wall). Other people in the exact same neighboring flats have been so quiet that I almost never heard them.

He should be deported after released.

Model Minority. LOL

He didn’t obtain the known substances used in the attacks at the University laboratory, leading investigators to believe he obtained the drugs illegally.

It’s always the “nice” ones

Premeditated. He wished to be perceived as a gracious and generous person. Then the other stuff happened.

I don’t think so. He probably got irritated, and more and more sleep deprived and angry, when the initial noise of having a new baby in the household didn’t settle down.

Imagine if Xuming had a toddler for a neighbor or a 6 year old that decided to jump on the bed. He complained of movement, not baby cries. Crying babies are loud, but crawling babies aren't. It would be impossible to please him.

Higher functioning people on the ASPD spectrum will often pretend to be kind, giving, caring, or the like to give a good first impression and to manipulate your perception of them. It is 99.9% of the time an act, not genuine/sincere.

I once lived in the lower level of a duplex. The upstairs neighbors were great. They moved out, and a couple with 5 kids from 11-18 years old moved in. Constant noise you would not believe. When the lease was up, I moved into another duplex, on the top floor. No noise at all! I'd never live on a lower level again. Ever.

@@LDiamondz definitely! I once had a family upstairs from me that also had a bunch of kids. They were horrible. Soooo noisy at all times. It’s the worst. But if it’s just the noise of daily life what can you do? It’s not really fair to expect neighbors to change the way they walk or the hours they keep. If they’re playing loud music or tv, having wild parties etc that’s one thing. But just moving around their home isn’t really something you can reasonably expect them to stop. Apartments just have really super crappy insulation.

@@sew75962 OK, so you know how it is. All those teenagers were extremely noisy. The everyday noise, not much they could do to stop that, didn't bother me. They did play loud music, TV, fireworks whenever, revving car motors, parents arguing, yelling at each other, the kids, it was a nightmare. They would turn down the volume when it got really late. I only asked them to keep it down, maybe 3 times, politely. They did, but next day, same thing. So, I just decided to move. I didn't want the added stress of having to go up there complaining over and over. It just didn't seem worth it. Those kinds of issues can get out of hand. Moving was the best thing I ever did. Eventually, they did get evicted when the new tenants had major problems with them, too. All was well after that, for me anyway. Have a great day, and thanks. 🙂