This depends on many aspects, first of all, we must obtain the corresponding academic qualifications. Now teachers in high schools and middle schools are required to have full-time undergraduate degrees, and developed cities require graduate students. Therefore, if you want to teach in high schools and middle schools, you must first obtain a high degree or a bachelor's degree from a key university; Secondly, you should recruit students or introduce talents through colleges and universities all over the country. Recruitment of public institutions is an examination organized by human resources departments all over the country. You can pay attention to related websites, and you can enter the school as a teacher through exams and interviews. There is also a talent introduction policy for highly educated (doctoral students) or shortage of majors. As long as you have an interview, you can enter the school to teach. Private high schools usually enter the Soviet Union by interview. Finally, the teacher qualification certificate. Normal schools will give teachers qualification certificates after graduation. Non-normal graduates should take the teacher qualification examination themselves, and they can formally enter the teaching profession after obtaining the teacher qualification certificate. Of course, there are unnecessary ones, but there is no way to evaluate professional titles, which means that you can't get higher wages.