Those who are close to cinnabar will be red, those who are close to ink will be black. It is a metaphor that getting close to good people can make people become good, and getting close to bad people can make people bad. It means that the objective environment has a great influence on people. 〖Source〗 Jin Dynasty Fu Xuan's "Prince Shaofu's Proverbs": "Therefore, the person who is close to the vermilion is red, and the one who is close to the ink is black; if the sound is harmonious, the sound will be clear, and if the shape is straight, the shadow will be straight." , In the spare time of embroidering the bed, I read and became literate, which is quite common.
★Qing·Anonymous "West Lake Episode 2·A Clever Marriage in Saxuetang" Ouyang Xiu once experienced it personally. He had a friend named Gao Qi who made a careless friend.