C421 Grand Ending

Just as Yun Qiuhua was about to continue doing science, Yan Cong turned his wheelchair and returned to his room. He looked at the door that was forcefully closed and couldn't help but twitch his mouth.

Then, they looked at each other in tacit understanding. Wasn't this guy's endurance too terrible?

Just as they were about to break in, Yan Cong's room door was opened