Half acquaintance - someone you have met but are not familiar with.

A casual acquaintance - just acquaintance, but not much understanding.

Bunun friends - according to custom, friends made by ordinary people.

Friendship between cars and hats - friends between rich people and poor people, a friendship that does not change due to changes in identity and status.

Friends in need - friends made in adversity, friends who have experienced hardships together.

Wine and wine acquaintances - friends made through eating and drinking.

Bamboo-horse acquaintance - friends who have known each other since childhood. Also known as the turn of the total angle.

The turn of the total angle - the total angle: the result of the upward parting of a child's bun in childhood. Refers to friends made in childhood.

Friends from the bottom of our hearts - friends with deep friendship.

Friends of glue and paint - close friends.

Friends of life and death - friends of life, death and sex.

A chance acquaintance - a friend made through an accidental encounter.

Nodding acquaintance - a friend who only nods to say hello in a relationship and has no deep feelings.

Casual acquaintance - a friend who has ordinary and superficial relationships.

Eight worship friends - the friendship between brothers and sisters who worshiped each other in the old days.

Friendship between pestle and mortar - making friends does not require poverty.

A golden acquaintance - a precious and valuable relationship.

The friendship between life and death - the friendship between life and death.

The friendship between gentlemen - the friendship between wise men is as plain as water and not vain.

Close friends - refers to confidants and reliable friends.

A personal acquaintance - as close as one person. Describes deep friendship.

Indispensable acquaintance - irreversible, no conflict, harmonious feelings; friendship, communication, friendship. Refers to a very good friend.

Cut one's neck to cut one's neck; cut one's neck, friendship, friendship. It is a metaphor for a friend who can share life and death, and endure hardships.

A long-lasting acquaintance - making friends despite not being of the same age.

The intersection of Zun and Zun - Zun and Zun: Zun and Zun's belt and Zun's clothes. Silk belt refers to a large belt made of white silk. Zunyi refers to clothes woven from ramie fiber. Refers to deep friendship.

The friendship between Guan and Bao——In the Spring and Autumn Period, Guan Zhong and Bao Shuya from Qi knew each other best. It is often used as a metaphor for a close friend.

The acquaintance of Ji and Qun - Ji and Qun: personal names, Chen Ji is Chen Qun's father. A metaphor for lifelong friendship.

The intersection of mortar and pestle - mortar: a stone rice-pounding instrument. Pestle: a wooden stick for pounding rice. The mortar and pestle are inseparable. A metaphor for a very good friend.