倒置干戈

Explanation: Hiding weapons backwards, that is no longer war 　　Usage: Verb-object type; for the predicate; said no to war 　　Source: Qian Han, "Historical Records Liuhou family": "Yin matter has been finished leather for the Xuan Yan, inverted arms, covered with skins to show the world no longer use military force." Thesaurus:  Set down war, daozai