English-speaking children understand and produce generic expressions in the preschool years, but there are cross-linguistic differences in how generics are expressed. Three studies examined interpretation of generic noun phrases in three- to seven-year-old child (N=192) and adult speakers (N=163) of Mandarin Chinese. Contrary to suggestions by Bloom (1981), Chinese-speaking adults honor a clear distinction between generics (expressed as bare NPs) and other quantified expressions ("all"/"suo3you3" and "some"/"you3de"). Furthermore, Mandarin-speaking children begin to distinguish generics from "all" or "some" as early as five years, as shown in both confirmation (Study 2) and property-generation (Study 3) tasks. Nonetheless, the developmental trajectory for Chinese appears prolonged relative to English and this seems to reflect difficulty with "all" and "some" rather than difficulty with generics. Altogether these results suggest that generics are primary, and that the consistency of markings affects the rate at which non-generic NPs are distinguished from generics. (Contains 1 footnote.)