These statements seem reasonable, but they can't stand careful scrutiny.
First of all, some people have explored the origin of this "symbol encyclopedia" and found that at first only a few netizens posted some strange characters near their homes online. In fact, it's just some complete Chinese characters, which look like unfamiliar characters after being torn off in half. Gradually, these posts were joined by netizens and became a "complete collection of thief marks".
Secondly, there are different versions of "Mark Daquan" circulating on the Internet, and some symbols have different meanings. For example, "X", some say it is not a goal, and some say it can be done.
Wang is a member of the plainclothes investigation detachment of the Municipal Public Security Bureau and has dealt with thieves for more than ten years. For this kind of online statement, he said that it is completely unbelievable. Judging from so many cases he has handled, he has never seen a thief leave those so-called traces before committing a crime. If citizens really encounter it, the easiest way is to see it, call the police and erase it.
Lao Ye, a veteran who once worked as a police assistant and participated in many cases of catching thieves, said that Mark's statement was sheer nonsense. He analyzed that from the thief's point of view, they don't need to mark at all. As the saying goes, if you have a guilty conscience, they will never appear at a door again. One more appearance will only leave the police with one more piece of evidence. Besides, since he came to step on the spot, he must have stolen it himself. Why did he step on it himself, but he left a message for his peers? These things cannot be explained.