Of course, you don't have to take the Putonghua test. You can take the math test with the teacher qualification certificate. The next step is whether the school wants it. As for the question of the school taking you in, first, the school can't refuse you with strength; Second, relying on relationships makes schools completely lose their resistance; Third, run your own school with money, so none of the above problems are problems; Fourth, without the above three conditions, we should learn well, find poor schools, train schools and other types of supplementary forces, expand our knowledge, accumulate experience and prepare for another war.