C428 Please be Careful with Your Words!

Liu Lei studied it for a long time, but he only found a trademark on the small mirror.

This kind of clue was absolutely useless.

He did not give up and carefully studied it again.

The result was the same. There were indeed no other clues or abnormalities on the small mirror.

This made him a little disappointed. The investigation didn't seem to be going well.

Up until now