Autumn's Concerto BTS

This BTS (Behind The Scenes) was released a while ago, but minsquare91subbing just subbed it, so now I also understand what they're staying.
I'm used to listening carefully to the dialogue as I can't read Chinese, but in BTS' there are usually a lot of noise, so I can't hear anything...

Anyways, this BTS includes Joe Chen Qiao En's visit on the set. Qiao En's famous for series like Fated To Love You (w. Ethan Ruan), Prince Turned Frog (w. Ming Dao) and she's really good friends with Ady An.
Ady An even said that she decided to accept the role as Liang MuCheng because of Qiao En.
VanNess seems distant or somewhat occupied though, maybe he's shy around people he doesn't know, or maybe he was too concentrated on his lines?

Youtube Link