The Chinese idiom 不择手段 (bù zé shǒu duàn) is formed through a grammatical structure where 不 (not) negates the verb 择 (to choose/select), which then governs the compound object 手段 (methods/means). Literally translating to "not choosing methods", it conveys the figurative meaning of being unscrupulous, indicating that one will use any means necessary to achieve a goal, without regard for morality or ethics. Its formation reflects a common pattern in Chinese where a negative adverb modifies a verb-phrase to create a fixed, expressive term denoting a specific behavioral trait.