Below are the lists of Eng Sub BTS released by iQiYi:
https://m.youtube.com/watch?v=LeSuWgilSiU
https://m.youtube.com/watch?v=iXWhoM-Aljg

https://m.youtube.com/watch?v=hlowZ7u0cS4
https://m.youtube.com/watch?v=5Me0Zf3R8kY
https://m.youtube.com/watch?v=oxW1gWScOsY
https://m.youtube.com/watch?v=L-2IrqeJgvk
https://m.youtube.com/watch?v=OS7MXGwV7ww

https://m.youtube.com/watch?v=qaTrpm2mP38

https://m.youtube.com/watch?v=TMQleFfqAY4

https://m.youtube.com/watch?v=F_Wd8gSzFMU

https://m.youtube.com/watch?v=IuYNM0h3jgY
https://m.youtube.com/watch?v=AvXxz81hqmY
https://m.youtube.com/watch?v=CTs2oqnCnEI
https://m.youtube.com/watch?v=OUQl4D6mjhc&t=5s

https://m.youtube.com/watch?v=KPy0LltQROY

https://m.youtube.com/watch?v=bJQ2rq-i7O0
https://m.youtube.com/watch?v=s2q1eOpim14

Interview:

https://m.youtube.com/watch?v=98eHAp4N3TA&t=30s

Someone has kindly did a playlist, so I’ll share here so you guys don’t have to keep coming back to this, plus In case there will new one 😃:

https://youtube.com/playlist?list=PLlCrV9TCfzMZFh9RzBzlhhXXxrIqv6bvC

Here are some extra BTS, however, they are not sub 😞:

https://m.youtube.com/watch?v=hT0qZFVbTfQ

https://m.youtube.com/watch?v=l6_Mi0ICJP4

https://m.youtube.com/watch?v=MWvTENM2W-8

https://m.youtube.com/watch?v=_p5qCwT7X8k

(Suspect this one will get eng sub by iQiYi soon)

https://m.youtube.com/watch?v=EDwvsHb5POE

https://m.youtube.com/watch?v=nQcJ-TH6qcw

https://m.youtube.com/watch?v=mIhQHuWeEW4

https://m.youtube.com/watch?v=1WmiDiQue8Y

(Here’s the translation for the above clip:

Female voice: oi, i see you by yourself sitting there drinking tea, i would like to ask, just a quick interview, is the horse carriage ride smooth?
BL: im busy reading
FV: is all the tea spilled over? The country road is a bit... is it ok? You didnt lose all your tea?
BL pretend to be reading
FV: Ha ha ha, do you know how to read?
BL: you said I’m proper (lady)! Brother, she called me uneducated (can’t recognise the letters 🤣), brother!
Her brother cousin in the drama: so do you know?)

This is video of BL’s crying scenes:
https://m.youtube.com/watch?v=ULPu9saWTfY

Special iQiYi’s video on Cui Shi Yi and Bai Lu, there is a non sub version from iQiYi, but I linked the viet sub version here lol:
https://m.youtube.com/watch?v=p5CzXqZe7V4

This is IQiYi’s special on Zhou Sheng Chen and Allen Ren:
https://m.youtube.com/watch?v=UKlkD7HqocE&t=122s