'Chún qiāng shé jiàn' is a vivid four-character idiom literally meaning 'lips as spears, tongue as swords.' It metaphorically describes intensely sharp, witty, and aggressive verbal exchanges — not physical combat, but fierce debate, heated arguments, or clever rhetorical dueling. Each character contributes to the image: 唇 (lips) and 舌 (tongue) represent speech organs, while 枪 (spear) and 剑 (sword) evoke weapons — together suggesting words wielded with lethal precision and force.

This idiom is commonly used in formal writing, news reports, political commentary, or literary descriptions of confrontations. It carries a slightly literary and dramatic tone, often implying intellectual intensity rather than mere rudeness. While it can describe hostile disputes, it may also highlight admirable rhetorical skill — especially when speakers are well-prepared, quick-witted, and articulate under pressure.