The adopted daughter's character doesn't add up for me. She has such a childish way of thinking(jealous of the real daughter) but she can think of an intricate way to frame Yining. The yam slime on the white towel is almost undetectable but of course since this is a series, they had to find it. And make others think it was the flower essence that Yining gave away. Most people could easily think it was the flower essence. I'm sure she had help from someone else, and if she did, shouldn't the grandma punish the person(s) helping her adopted granddaughter's manifest such jealousy?