At the time of the incident, the clerk was very confused to see the female store manager Xie walking back to the store soaked through. When asked in time, she only said "something fell into the Danshui River", but didn't say what it was. Later, Xie got used to old makeup, including crow's feet, and used this old face to take money from the ATM card of the deceased, but the password was wrong and he was forbidden to withdraw money, so he had to go to the counter to withdraw money. The clerk saw her and said bluntly, "You look so young." She faltered that she had just had a micro-plastic surgery a few days ago, but the clerk became suspicious and refused her withdrawal request. After she left, after investigation, she was Xie. Shortly after trying to retreat, the body of the deceased was found.

In fact, Xie's weird behaviors include "walking back to the store soaked" and "dressing up to get money", as well as "accidentally revealing his identity". At first, the identity of the floating corpse was not confirmed, and the appearance was difficult to identify. However, Xie called the family of the deceased and said, "Your sister's body has been found". When the family saw the floating corpse, they immediately called "Sister", which made the police quite puzzled. A series of mistakes made Xie arrested quickly.