First of all, there must be a professional theoretical system as a support. In fact, it is to constantly consolidate and deepen understanding in real cars. Many times, many words sound reasonable, but without practice, doing it yourself will be obscured. Therefore, practice is the only criterion for testing truth.

If you want to learn the real technology, find a good master to teach you the methods, and then you will constantly improve yourself, test the methods you have learned in actual combat, and sum up some of your own experiences, and you will gradually become a professional!