Apologies for the video being at 1.25 times speed, that was an error on my part because I had been watching other content. It is what it is and it. Too late to go back lol.
3:21 jué has two voices, one male and one female. The male one is more subtle since it's more bassy. It's a great touch since Jue is a god hence beyond genders.
This trailer is actually an extention of act 4. Its sad that act 4 is a total yap fest that its unenjoyable. Hope 1.1 will have as amazing as this trailer in its pacing.