C1019 12 Am(1)

After watching these three videos, I was furious, but at the same time, I had a question in my mind. Who was it? What was their motive for playing such a prank in School? So far, three people had sacrificed their lives, so what could they do to end this game?

I told everything Cai Yun said to the second generation and Mingyue, and now I have Cai Yun's Mobile phone