Are you talking about training doctors or nurses? Both. If you are a doctor, you have to be a resident for five years. Of course, you can leave in the meantime. If you have enough patience and want to learn more clinical knowledge, I think working as a nurse is a very good choice. You can learn a lot here, but it's hard to be a nurse, and you stayed here for five years and left Huaxi. Generally, few doctors (demons) can stay, depending on your own requirements, so can nurses. The difference is that nurses (witches) only need to be trained for two years. After two years, as long as you don't leave, you will stay. Huaxi is not as difficult to get in as people say, asking for money and power and so on. As long as you have this desire and work hard for it, you can come in. In addition, although everyone can come in as a trainee, there are certain principles: keen reaction ability, height, appearance, temperament and so on. The hidden rule here is that ability can be cultivated, but a person's inner temperament is ~ ~ ~, so I hope you can get it.