In Water Margin, Yang Zhi was forced to sell his family heirloom and use the money to manage the relationship between superiors and subordinates because he suffered the loss of his birth outline and needed someone to trust him to return his innocence. This is the story of Yang Zhi selling knives. Birthday program refers to birthday gifts, and the birthday program that Yang Zhi is responsible for escorting is gold and silver jewelry with the value of100000 yuan given by Liang Zhongshu to his father-in-law Cai Jing, which is mentioned in the chapter of Water Margin. After Chao Gai and a group of his friends fell in love with Yang Zhi, they stole the birthday program that Yang Zhi was responsible for escorting, which led to Yang Zhi finally selling knives.

1. Chao Gai and a group of his friends stole the chapter "Banning the Water Margin". It is said that Yang Zhi was responsible for escorting Liang Zhongshu's birthday present to his father-in-law, Cai Jing, and passed by the place where Classical and his party gathered. King Chao Gai asked the Rat to give Yang Zhi and Yang Zhi's team sweating pills, and then while Yang Zhi and his teammates were unconscious, Chao Gai and his gang stole the birthday outline of Yang Zhi's escort.

Second, Yang Zhi only sells knives to keep his official position. Yang Zhi's official position is not big, and it is his important task to escort the family planning. If this task fails, his official position is likely to be lost. This job is his breadwinner's job, and he should try his best to keep it, but he has no money to manage relationships, so he can only sell knives to manage relationships.

Third, the reason why Yang Zhi sells knives is also the reason why his family has fallen. The reason why Yang Zhi wants to sell family heirlooms is because he really has no money, so he made this decision. Yang Zhijia is an official's family, but by her generation, it has almost declined. Yang Zhi needs to maintain his position. The reason why officials can only sell knives for money, and then use money to trust relationships.