T he red envelope is an old Chinese custom for wishing someone good luck. How much is given is purely up to the student or disciple or sifu level. It would be no different then then giving a family member a card and a money for a birthday or anniversary. A gift of money is an appropriate gift to signify your appreciation for the effort the master makes to teach you his beloved art.
Money also tends to be a good gift as it is the hardest thing to part with, for most people.
Teaching can be demanding. It takes a great deal of time and effort to teach the massive amount of material needed to create a new student, disciple or teacher level. The red envelope is a sign you care, and appreciate all the effort the master makes to teach you. Copyright 2001 American Center for Chinese Studies, All Rights Reserved.