I remember watching an interview of Hu Tian Yi on acting with Xing Fei, he was so happy to get to act with her, he said he's been waiting for this and was really excited, like you saw the joy in his eyes and face.
I know lots of people have a theory about Jia Hui being He Dun's bro...and I kinda think it might be right....let's throw another fruit into the pile: Could He Dun's mentor have something to do with their past?
Bruh, if u guys haven't seen Hu Xian Xu's interviews etc from when he was a kid and now, THEY'RE HILARIOUS. People joke he should join Deyun She (德云社, traditional folk comedy group).
Something funny: I've seen funny commentary on Kuaishou where they say they know Chen Xing Xu is the good guy, but due to having seen him in Goodbye Princess, they can't help but think he looks like a villain with his micro expressions. lol
Bro's comment: she got nerfed too much.
https://en.wikipedia.org/wiki/Xiangsheng
^for those wanting to know about the 2-person comedy format