The main reason is that Guan Yu is regarded as a representative of loyalty, because no matter who admires Master Guan Yu from the heart, there is no doubt about it. Moreover, after Guan Yu's death, emperors highly praised Guan Yu, so few people dared to rob the tomb.

One more thing, as we all know, in fact, Master Guan is now mostly regarded as a god. Even the gang worships Master Guan and regards his spirit as the purpose of the gang, so that no one who is loved will steal his grave.

We all know a common sense, that is, most grave robbers regard Master Guan as their ancestors, hoping that Master Guan can protect his own safety. So who would be stupid enough to steal an ancestor's grave?

You know, Guan Yu's position in the eyes of ancient China people is extremely high. We all know that China was divided into Wensheng and Vu Thang in history. Wensheng must be famous for Confucius, so the warrior is Guan Yu, as famous as Confucius. Who can go against the world to steal Guan Yu's tomb?