不厌其烦

Explanation: Tired: too; trouble: trouble. Never too cumbersome and troublesome 　　Usage: Verb-object type; as predicate, adverbial; with a compliment, to describe very patient 　　Source: Song, Yuan Xie, "pull out fast _set_": "Zhi's Xianjun, afraid the trouble, but God does not listen to each." 　　Examples: The history is different today is that will come to like the smallest daily in Lu Yan, Xiao Mao's personal petty, ~, its never too rustic. (Ching Yan Fu, "said school rumor.") 　　Riddle: Mixed Thesaurus:  describe (dwell) at great length, not to cast away anything, big or small; save everything,big or small, Detailed Is dedicated, no omission, subtle Buyi, Small large completely