It is difficult to get a coaching license. At least 70 strokes. Don't test theory. Time depends on when you can hit more than 70 goals per game. The monthly salary of a golf coach depends on your popularity, what competitions you have won and which coaches you have studied with. There is little competition among professional coaches in China, which is rubbish: 1000-2000. Ordinary 4000-5000. China experts say tens of thousands.

If it is a professional pga, I have seen one with a pga certificate of 300,000-400,000 a month.