At the end of the Eastern Han Dynasty, North Korea's political corruption, coupled with years of famine, made people's lives very difficult. Liu Bei intends to save the people, and Zhang Fei and Guan Yu are also willing to do something with Liu Bei. The three of them hit it off and chose Zhangfeizhuang as the Peach Blossom Garden. At this time, the peach blossoms are in full bloom and the scenery is beautiful. Zhang Fei prepared a green cow and a white horse as sacrifices, burned incense and prayed, and took the oath. Three people recognized their brother by their age. Liu Bei became the eldest brother, Guan Yu the second and Zhang Fei the third. This is the famous "taoyuan sworn" in the romance of the three kingdoms.

Eight Worship Friends: "Eight Worship" originally refers to the etiquette when children of ancient family friends meet their elders, and later refers to the relationship between brothers and sisters who become sworn brothers after meeting.

A nodding acquaintance: refers to a friend who doesn't have a deep friendship and only nods to his face. It is also called a "casual acquaintance".

Friendship between cloth and clothes: friends of ordinary people. There is a saying in Records of the Historian Biography of Lian Po and Lin Xiangru: "I thought the friendship of cloth and clothes had not deceived you. Is it a big country? "

A friend who is afraid of beheading will not change his mind. There is a saying in "The Biography of Lian Po and Lin Xiangru": "A single soldier is happy, and it is his turn to be embarrassed." "Friendship of neck and neck" can also be described as "friendship of life and death".

Friends who never turn their backs on each other: it shows that they have the same heart and feelings. Master Zhuangzi: "The three men smiled at each other and never went against their will, so they became friends."

It's Chu Jiu's turn: pestle, stick, mortar and stone mortar. It means not to be too poor to make friends. It is also called "making friends".

Turn from car to hat: Taiping Yu Lan quoted the local custom in Zhouchu: "The more vulgar, the friendlier, that is, take off the towel on your head, untie the five-foot knife (waist) to make friends with it, kneel down to your wife and make friends. ..... I wish you: although you go to Dai Li by car, I will pick you up the day after tomorrow. " This kind of friend, no different from the nobility, has a profound friendship.

Forgotten friends: friends of different ages and generations with deep friendship. Biography of Southern History He Xun: "Weak crown, stately scholar, South township model countermeasures, big reward, because of forgetting the year number, make friends."

Corner: a friend I have known since I was a child. In the Book of Songs, children's bun was called "horn", and later people used to call childhood "total horn". Biography of He Shaochuan in the Book of Jin: "The word' Shu' respects ancestors and is not as good as martial arts."

Friendship of bamboo and horses: friends who like to make friends when they are young. Bamboo horse, children like to ride bamboo poles as horses, so they are compared to children. "Biography of Shi Guo in the Later Han Dynasty" wrote: "When I first arrived at the brigade headquarters and arrived at the beautiful millet in Xihe River, there were hundreds of roes, each riding a bamboo horse to meet them."

A once-in-a-lifetime acquaintance, a friend of eight friends, a friend who never leaves, is an evil friend.

Guan Bao's best friends, the Fox Gang and the Dog Party.

Forgetting friends: refers to intimate friends who are independent of identity and appearance.