In fact, many people learn modeling, the difficulty is not that he can't make noodles, but that he doesn't know how to draw these lines and how to come up with them. Some experienced people, with their already great experience, tell beginners that you draw like this, but don't tell beginners why these lines are like this, how to think about it. It's like sitting in an office with an air-conditioned leader teaching a farmer or worker how to work.