There are many places. The qualification of the school largely represents whether the school is formal or not, and the teaching equipment means whether you can study and practice normally. Teachers represent what you can learn. As the saying goes, a great teacher makes a great apprentice, so the teacher is very important. If there is only theory in the teaching content, it is an armchair strategist. If you only practice, then you can't understand why you should do it. As long as theory and practice are combined, both the main and the auxiliary can be harvested.