After the Five Dynasties, Han Ren Murong Yan was super good at catching thieves. When he was in the state of Zhangzhou (now Dongping, Shandong), he set up a quality library (pawn shop) in the state. Someone brought two silver ingots and pawned 100,000 yuan. After Yan Chao’s report, the quality warehouse manager issued a notice, claiming that the quality database was stolen, lost the silver ingots and other belongings that had been mortgaged before, and called on the thieves headed by the community. Within a few days, someone really took this ticket to redeem the two silver coins. So, when he was arrested and interrogated, he had to plead guilty and be punished.