What is "drawing a face"?

Beijing Opera: Also known as "Beijing Opera". It is one of the traditional plays in China. It has a history of more than 200 years. In the fifty-five years of Qianlong, four Huizhou Qupai clubs, Sanqing, Sixi, Chuntai and Hechun, originally performed in the south, went to Beijing to perform. They cooperated with the artists of Hubei Handiao, influenced each other, accepted some plays, tunes and playing methods of Kunqu Opera and Shaanxi Opera, and absorbed some folk tunes, which gradually merged, evolved and developed. According to the gender, age, identity and personality of the characters in the play, the types of characters are divided. Actors often specialize in one kind of role, thus forming various specialized businesses. For example, the average person is called life or death; The old woman is called Lao Dan; A man with a rough personality is called a shelf to draw a face (vice net) and so on. Each has its own performing arts characteristics. The division of roles has gradually changed from simple to complex. In modern times, most traditional operas take life, Dan, Jing, end and ugliness as the main line, each with a relatively fine division. If life is divided into old students, young students and martial arts students; Dan is divided into Tsing Yi, Huadan, Lao Dan and wudan.