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The acquaintance of old age: a relationship based on talent and virtue regardless of age;

The acquaintance of a sweet horse: the relationship between men and women in childhood;

The relationship between gentlemen Friendship: a friend who seems ordinary but focuses on morality;

Friends in cars and hats: friends who are not distinguished by their status;

Friends who are oblivious to each other: they agree with each other from heart to heart regardless of their appearance. ;

Friendship of Jinshi: deep friendship, as strong as gold and stone;

Friendship of Jinlan: friendship, like brothers;

Friends of the past: friendship in the past friends;

Friends of the heart: friends who talk about everything and confide in their hearts;

Friends of the poor and humble: friends made in poverty;

Poems and Prose Friendship: friends made through poetry and prose

Shijiao: strong friendship; Fengjiao: treating each other with true feelings.