Private education, to put it bluntly, is a deep business. If your hardware is very good (the proportion of your body is suitable for fitness, your facial features are handsome, and your body is preferably above 180), then congratulations. Finding a big store can earn more than 300 thousand a year in second-tier cities, and it is not a problem for first-tier cities to make millions a year. But many private teachers will be cheap to grab resources, and some individuals will be rich ducks to make money ... it depends on your choice. If you do well, practice muscle research and take part in the competition to get the ranking.