I have a fellow villager who just wants to learn pasta and cold noodles with Chinese hamburger in other people's shops. After three months' study, he is a handyman every day, and the core formula is not taught at all. Every time he says that you must learn to endure hardships and lay a good foundation, in fact, he is treated as a free labor force, and nothing has made him angry to death. I learned snacks in Weichen, Xi 'an, and it feels quite good. You can go and have a look.