Why did Bao Gong disguise himself as a fortune teller?

In order to find the thief, Bao Gong disguised himself as a fortune teller. All the money the couple hid in the temple was stolen. Please ask Bao Gong to handle this matter. Bao Gong pretended to be a fortune teller and found out the thief Wang Boss. Boss Wang admitted his crime and returned all the money. Bao Gong, a bodhisattva in Bao Gong's trial, is a famous upright official in the history of China. He cares about people's sufferings, is upright, selfless and resourceful.