Nitrogen education is still good. As for online work or online work, I think it's better to look at my own needs. According to my personal experience, online work is better ∞, time is more free, don't worry about your lack of time, it is more suitable for on-the-job preparation. Moreover, nitrogen guide education is supported by many excellent teachers, who are more responsible, solve the problem that I don't want to study alone from the root, and have higher learning efficiency. I also plan to enroll in a teaching course and take the first step as a teacher.