they want to know if you are funny enough, share the same lifestyle or not. most of the asian personal characters mentioned in my post are pretty much some of the basic guidlines for you to live and work in USA. if you just want to be yourself, completely ignore these, you would be thought to be socially bad-behaved.
Japanese , generallyspeaking, are richer that American, but japanese men's social skills are worse than chinese, check around to see their cross-cultured marriage