不疾不徐

Explanation: Disease: rapid. Xu: slow. And not be slow. Appropriate means of doing things can grasp the rhythm, not too fast or too slow. 　　Usage: Joint type; as predicate, attributive, adverbial; means doing things up_set_ the rhythm control does not slow moderately 　　Source: Song Huang Ting "Wang Chun in the epitaph": "Jun called financial resources, unhurried, labor power to persuade the public, private and public to economy." Thesaurus:  Displease Not slow