同声相应，同气相求

Explanation: Mutual induction of similar things. Refers to the sense of fun, like-minded response to each other, naturally together. 　　Source: "Easy to do," Same Voice gas demand. Water wet, fire to dry. " 　　Examples: In addition are the ~, Rixi collected from, Free Talk and even music. (Ms. Qing Lingnan Feathered "Female Hero in Eastern Europe" the first return)