C774 I Found Xu Jiaxin
There were two households on the first floor, and Xiao Chennai had tested each of them. In the end, he decided on the house number 401.
Xiao Chennai did not wear a police uniform. He told Zhou Han and Cheng Sheng to hide and he knocked on the door.
After two knocks, a woman's voice came from inside, "Who is it?"
Xiao Chennai said, "It's the gas company. They came to check the meter
