After learning the basic course, one is able to attain a healthy body, through the strengthening of the body system. Those who intend to go for the advanced course need to undergo grading and obtain approval from Grandmaster. There is generally no fixed period of time for each grade in the more advanced course. It depends to a great extent on the achievement of results for that particular standard.
GrandMaster Sim Poh Huat, NamWahPai