任何人 (rèn hé rén) means anyone or anybody. 任何 is a universal quantifier meaning any or whatever and 人 means person. Together they form the universal reference for all people without exception. In positive sentences with 都 it means everyone (任何人都...); with negation it means nobody or not anyone. Related: 任何事 (anything), 任何地方 (anywhere), 任何时候 (anytime) follow the same pattern.