C101 Dining Hall Wind Wave 2
Even if something happens, his sister will let him go unscathed.
So right now, Yang Xin wanted him to have the ability to protect himself so that he would not suffer any unnecessary injuries. After dinner, Yang Xin told him about many of his ultimate moves, which were all insta-kill.
This was not something that could be seen in martial arts because those were all literatures. For example