C478 Escape
Regardless of whether Yue Yi killed his mentor or not, Mentor Zhu's death was related to him. Several teachers saw with their own eyes that he was the first one to appear at the scene of the crime. Furthermore, he had blood on his hands, which made him the closest to Mentor Zhu.
The evidence was there and the motive was there. Basically, it could be said that all the evidence was present