C503 The Helplessness Caused by Environment

Soong Yashu only found a piece of pubic hair inside the bun, there was no way to tell there was a problem with the bun in the bun house. However, I was still very confused, why must this killer call Yang Tong? Was it just to frame him?

We can't guess the murderer's motive, but we can confirm of one thing, that is, that the murderer definitely knows Yang Tong