Hahaha.......that's cool.
Do you guys know anyone like that? All around good guy, incredibly laid-back and unthreatening. Always see the glass of water half empty (or half full? another confusion of mine). His opinions on anything are always in the vicinity of "just about" or "close enough", and never bother to be exact. And he's someone you definitely wouldn't hire to build your cabintry.
Too bad, other than "close-enough" there's not a cute phrase or term in English for this personality type that give a clear and keen sense and feel to it. I am sure Chinese people don't have a sole ownership of people like that, it could be in any race, nation and ethnic, right?