C566 There's a Clue

The female prison guard took a closer look and indeed saw that there was something wrong with the floor of the room where Qu Qingchen was. As she clumsily pulled her feet back and forth, there seemed to be some more traces on the cement floor. However, it was not very clear in the surveillance camera. It vaguely looked like a bunch of ants crawling over.

After the question was thrown out