Among the plays of the Yuan Dynasty, there was one called “The Dream of Bao Gong Examining the Butterflies Three Times”. It was written by Guan Hanqing (1225–1320), a famous playwright.
In the play, a man by the surname of Wang goes to the market to get some paper and brushes for his three sons. While he is taking a rest, he unwittingly offends Ge Biao, an influential man who is distantly related to the emperor. The latter beats Wang to death in a fit of pique.