割鸡焉用牛刀

Explanation: Why should kill the chicken slaughtering knife. Metaphors do not need to spend great efforts to do the little things. 　　Usage: Complex sentence; for clause; that is not worth making a fuss 　　Source: Pre-Qin Confucian "Analects, XVII": "Son of Wu Cheng, hear music in the voice, Master smile and laughed and said: 'Cut the chicken Yanyong chopper?'" 　　Examples: "~"? Swinhoe personally do not work, I cut Zhongzhu Hou heads, such as Tannangquwu ears. (Ming Luo, "Three Kingdoms" The Fifth)