This article investigates the postverbal negation construction in Taiwanese Southern Min. I propose that the construction is derived in a way similar to resultatives and that the postverbal negation bo and its affirmative counterpart u are particular kinds of aspectual elements in the resultative complement. Given this, the lack of (apparent) postverbal negation in the closely-related language Mandarin Chinese can be ascribed to the fact that Mandarin Chinese lacks this particular aspectual use of affirmative you and negative mei(you) and thus it fails to generate the structure under investigation. It is also shown that the proposed analysis is supported by cross-linguistic correlations among Chinese languages.