The word 何必 is formed through the conceptual fusion of its two component characters: 何, which carries the core idea of "how" or "why", acting as a questioning agent, and 必, which means "must" or "necessarily", representing an imperative or unavoidable course. Their combination does not simply add their meanings, but instead creates a new, integrated rhetorical meaning where the questioning of 何 directly challenges the necessity implied by 必. This results in a compact expression that conveys a sense of "for what necessity?" or "there is no need to", effectively questioning the very reason or compulsion for an action in a single, philosophically resonant unit.