With the thought that he might get lucky, he let the little bug fly through a box of files discarded by the police station. There were many files in it that stated the details of some cases, but most of them were solved cases. This was information that could be found online, and it was not considered classified, so they could be handled any way the police wished.
The little bug flew through a few boxes to check the contents. Li Du shook his head, as there was nothing valuable in them.
The little bug flew once again into a box. By this time, Li Du was only searching half-heartedly. But in a split second, he saw a familiar photo. Li Du suddenly realized that this photo should not be there!