寸铁杀人

Explanation: Short-inch-long weapon that can kill. Analogy is the main thing is fine and not more. 　　Usage: The main predicate; as predicate; analogy you be few 　　Source: Luo Da Song Jing "Helin Yulu," VII: "For example, a car containing weapons of people, get something, then remove the one to get, it is not murder means; I only inches of iron, can kill." Thesaurus:  In the phrase, hit the mark with a single comment