The evidence is a video recording, and the video was recorded by Zhou Xiaobo before he passed away.
"I took money from Zhou Shiran to hit Cheng Yujie." Zhou Xiaobo said while lying in the hospital bed.
Yu Jingchen asked, "Why did you hit her?"
"Because I desperately needed money at the time, my daughter was ill and needed a lot of money for treatment, and I didn't have any." Zhou Xiaobo said helplessly. "So... cough cough... this was the only chance I had to make money."
"At the time, did Zhou Shiran ask you to kill Cheng Yujie?"
"Yes!"
"But you didn't succeed, Cheng Yujie is still alive, you only broke her leg."
"I'm not inherently a bad person, nor am I a professional killer. In the end, I couldn't go through with it. But I did hit her badly, she ended up in a vegetative state, and broke a leg."
Yu Jingchen asked in a low voice, "Why did Zhou Shiran want to kill her?"
"Because she wanted to marry An Jiancheng, and An Jiancheng liked her very much at the time."
"Hmm!"
