China citizen come to Hong Kong on tourist less than 7 days need visa or not?

You need to apply for a Transit/Visit type in advance from Malaysia at least about four to six months ago.

You are suggested to apply by mailing your documents to HK Immigration Department. The following documents are needed to prepare: your valid passport, an application form, a recent taken photo, your bank statement, your round trip tickets and your travel plans. Besides, you still need to provide a 160HKD promissory note/bill of exchange as well as your resident permit in Malaysia in the evenlope.