Basic explanation:

1. Combination of lips and teeth

2. Metaphors are closely related and interdependent.

3. discuss it.

Explain in detail:

Metaphor is interdependent and like-minded.

Tang Gao Shi's "Reward me as a doctor in Henan Province" says: "Legs and arms stand in front of the mountain, and lips and teeth depend on the Great Wall." "Three Kingdoms Pinghua" Volume 1: "Sun Liang swears to heaven that Jingzhou and Emperor Wudi are a state of lips and teeth, and the world does not interact." Huang Qing Zunxian wrote in his poem "Weeping at Weihai": "The north and south of Taiwan Province are like lips and teeth." Chen Yi wrote in his poem "The 70th Birthday of President Ho Chi Minh": "China and Vietnam are as close as lips and teeth, and the front lines in the rear support each other."

Discussion; Gossip.

The third chapter of Jin Ping Mei Hua Ci: "moving lips and teeth." The seventh and eighth chapters of Jin Ping Mei Hua Ci: "I was pregnant, and I happened to bump into someone and make friends with them."

Lips and teeth: 1. Lips and teeth.

Lu Ji's "Wen Fu": "Thinking about the wind is from the chest, and words flow to the lips and teeth." "Wang Jinshu Zhuo Biography": "With a tired egg, it is rushing to thunder; The quality of cocoon chestnuts is the road of jackals. If they are swallowed, will they resist lips and teeth? "

It is a metaphor that the two sides are closely related and like-minded.

Fan Pang: "Manchu is more like each other, overlapping like lips and teeth. If there is any objection, it will be rejected. What is its significance? "

"Biography of the Book of Jin and Wenqiao": "Servants and Rengong should be like snakes in a long mountain, and they should stay together from beginning to end, which is also a metaphor."

"New Tang Book Biography of Li Stepfather": "He Yuanji is good at standing, and his stepfather has no help from the mainland, so it is desirable from time to time. The story of Heshuo is not used properly, which is in line with the emperor. "

"Ming History Sichuan Tusi Chuanyi Wumeng": "Wumeng, Wusha and Dongchuan are local officials, so they are lips and teeth with Mangbu." ?

Qing Zhaolian's Xiao Ting Zalu Zhao Yonglue: "The dam is the upper reaches of the Chuanjiang River, which is the lip and tooth of Zhao Huazhi, and it is called the iron sill." See "Lip-tooth Dependence" and "Lip Death and Tooth Cold".

A metaphor for sharp irony.

"Taiping Guangji" Volume 444 quoted and read: "Nothing, marry a Lu family. He is extremely cruel and violent. Every time I touch my lips and teeth, I am furious, so I fled here. "

Refers to discussion.

The seventh and eighth chapters of "Jin Ping Mei Hua Ci": "There is a body on the moon, which happens to bump into others and make friends."