The Chinese word "百战不殆" is formed by sequentially combining four characters: "百" meaning "hundred" or "many", "战" meaning "battle", "不" meaning "not", and "殆" meaning "danger" or "peril". It originates as a phrase from Sun Tzu's "The Art of War", where it structurally pairs "百战" (many battles) as a situational context with "不殆" (not in danger) as the outcome, literally conveying the idea of fighting numerous engagements without ever facing defeat or hazard.