Demon Scare Demon.
There is a story of a seller of pictures portraits of a celebrated Taoist going along the street, when a woman asked the vendor, ‘ What use are they for sticking about the house? The door gods have swords and hatchets, and so frighten demons away. These portraits have good-natured faces.’ Her husband replied, ‘ Yes, but the man’s deeds were all the more frightful and villainous. Buy one.