‘无论谁’ (wú lùn shéi) is a pronoun meaning ‘whoever’ or ‘no matter who’. It’s a compound structure: ‘无’ (wú, ‘not’) + ‘论’ (lùn, ‘to discuss’ or ‘to consider’) + ‘谁’ (shéi, ‘who’), literally ‘not discuss who’, conveying the idea that identity is irrelevant—the statement applies universally. It introduces a conditional clause and is commonly used to express inclusivity or inevitability regardless of the person involved.

This phrase often appears at the beginning of a sentence before a verb or adjective, followed by a main clause introduced by ‘都’ (dōu, ‘all/even’) or ‘都…了’ for emphasis. It’s neutral in register—suitable for both spoken and written Chinese—and frequently used in everyday contexts like rules, promises, warnings, or generalizations about human behavior or responsibilities.