Tuition is required. Like learning high skills. It refers to the host of a ritual. Many Taoist temples now offer high-gong courses on a regular basis. For example, Chunyang Palace in Datong, Shanxi Province has this class. You will be paid after you have accomplished something in your studies, gone out to do things, read Feng Shui, etc. It's similar to today's running business. The more you accept, the more money you make.