So you aware of those things as When you to visit China as most of you know about culture Leftover food is bad Chinese people will eat their own meals until there's nothing left in dishes because that causes bad luck.
when you drink. Your hold glass under lower older you to show respect.
You shouldn't write with red pen because that shows disrespect or it means protest.
and don't use clock or books as the gifts to someone because in Chinese Clock pronounced the same as funeral and the word book pronounced the same as fail.