King Tsing, while on his way to a large gathering, passed through a district called Chun-Hoa, where there lived a young girl who was possessed of evil spirits. When King passed the night at her home, the demons did not dare to enter, but they returned as soon as he left the house. The young girl asked them the reason and they answered, "We are afraid of King." She then told her father who ran after King Tsing to call him back. But the good man simply wrote these four words on a slip of paper: King Tsing tsaï tzu ("King Tsing is here"), and advised him to paste it on the door. The demons never dared to return.
This true story goes to prove that the presence of a good man can put evil spirits to flight.