At the beginning of the Tang Dynasty, a man named Xu, who was afraid of being an official, fled to the mountains. Can't talk because of illness. A few years later, a Buddhist temple will choose a person who is good at calligraphy and write couplets for the pillars in the temple. Xu made another big taboo when he didn't pay attention to the beams lying on the ground.
The abbot of the temple was very angry and hit him on the back with a cane. He quickly wrote on the ground with his hand: "Although I can't speak, I have learned Chinese calligraphy. I hope I can try." As a result, let him have a try, and all the monks in the temple are convinced and willing to let him write everything, no matter what his faults are.