Whats the dresscode for a wedding ( Male)

Hi, there is no strict request about the dresscode for a wedding actually! Just don't wear too casually, but suits seem to be too formal.

As for the red envelop money, it depends on you! If he or she is your close friends, you can put in 666RMB or 888RMB to show your best wishes (nos. 6 and 8 are usually lucky numbers in the eyes of Chinese people)!