Liezi Tang Wen said that Boya was good at playing drums and Zhong Ziqi was good at listening. Boya Guqin aimed at the mountain, and Zhong Ziqi said, "OK, I'm as steep as Mount Tai." Determined to manage water, Zhong Ziqi said, "Well, the ocean is like a river." Zhong Ziqi will understand what Boya said. When he died as a child, Boya said that there was no bosom friend in the world, but he broke the piano and never played drums all his life. "High mountains and flowing water" is a metaphor for intimate friends.

Boya plays the piano and Zhong Ziqi listens to him. When he played the piano for the first time, he showed his ambition to climb mountains. Zhong Ziqi said, "What a great pianist! As high as Mount Tai. " After a while, the sound of the piano showed unremitting ambition to keep pace with the running water. Zhong Ziqi said again, "What a good pianist! Like the Yangtze River and the Yellow River. " After Zhong Ziqi's death, Boya broke the piano and played the string, and never played the piano again in his life, thinking that there was no one worth playing. Not only playing the piano, but also virtuous people. Even a virtuous person, how can a virtuous person be loyal if he is not treated with courtesy? Just like a good horse can't ride well, you can't run thousands of miles with him.

Among them, turning one's life, turning one's back and worshiping one's back, also known as "Jiao Dao", comes from the allusion of "Zuo Yang". Selected from Selected Literary Works. Liu Jun. On the Wide Break-up: "I want to be unkind, take precautions, and want to benefit the villa, and the sheep emblem is strong." Note in the Tang Dynasty: Biography of Martyrs said, and Zuo are best friends. When they heard about the sage of Chu, they went to look for him. When they encounter rain and snow, they can't find a plan. They grieved for food and clothes and died in a tree. "

According to legend, during the Warring States Period, Zuo He met each other and went to the State of Chu to seek audience. On the way, they met with heavy snow. At that time, they were wearing thin clothes and didn't have enough food. Zuo gave all his clothes and food to make friends, and hid himself in an empty tree and committed suicide. Later generations called this intimate friend with profound friendship "Zuo Yang"

Chu Jiu's friendship comes from the Book of the Later Han Dynasty. Wu has a biography. At that time, Shamu, a public servant, came to visit imperial academy. He had no money, but he became a guest servant in order to rent money. Yu Yu was frightened and decided to give it to Chu Jiu. " It means not to be too poor to make friends.

In the Eastern Han Dynasty, there was a poor and studious scholar named Gong Shamu. After a period of hard study, I always thought that my study was limited and I wanted to enter Beijing Imperial College for further study. Gong Shamu's family is poor and doesn't have much money for him to study in imperial academy. So Gong Shamu went to a rich family in Wu You to make a husker. Wu You served as Qi Xiang, Chang Shi and other official positions. One day, when Gong Shamu was in Xi Valley, Wu You came to see him. Wu You saw that Gong Shamu was polite and not like a clown at all, so he began to strike up a conversation with him. During the conversation, You Wu found Gong Shamu knowledgeable and original. Wu You became friends with him before Chu Jiu, regardless of the disparity between the rich and the poor. In feudal society, rich and poor counties were different and hierarchical. It is rare for a rich man to condescend to make friends with a poor scholar, so it is passed down as a much-told story.