唇齿相依

Explanation: Lips and teeth on each other. Metaphor of the two sides close, interdependent 　　Usage: The main predicate; as attribute; with compliment to describe national, regional, and interpersonal relationship between 　　Source: Jin Chenshou "Three Kingdoms Wei Zhi Bao Xun Biography": "Wang Zheng repeatedly but have not been g, covered with Wu Shu interdependent, with resistance landscape, there is a tendency it is also difficult to pull." 　　Examples: Korea is pretty knowledgeable Wang Hongyuan, said years of Song and Liao and good, ~, not to change plans. (Qing Chen Chen, "Water Margin after the transfer," the thirteenth back) 　　Riddle: Yes Thesaurus:  Solidarity, telesthesia, The nerves of the fingertips are linked with the heart, Interest rates communicate Antonym Group:  Inconsistent correspondence, bulls and bears; fictitious transaction, plot and wrangle, oversell Bull, each trying to cheat or outwit the other, Erzhawoyu, engage in speculation and profiteering, opportunism, finesse, Efference Lide, plot and wrangle