Lu Chen took it out and took a look. It's an old mobile phone with two cracks in the screen. A thumb-sized piece is broken in the upper right corner, but it doesn't affect its use. A group called "Night Walker" on WeChat lit up with a red dot. The group leader Lao Mao sent a message.
"@Everyone is here. A body has just been found in an abandoned chemical factory in the east of the city. The employer is offering 80,000 yuan to find the murderer. Who will take it?"
