There are indeed many public welfare training institutions in the market at present. It also makes it difficult for candidates to choose. Personal suggestions can choose training institutions from the following aspects. One is to see if you have your own full-time research institute from their teachers. Teachers in some training institutions are not full-time. I found a teacher at random from college. This is very unprofessional. Second, from the comparison of teaching shifts. See if there are any classes with small classes. The class size of public education in China is 6-8. This is the best way for candidates to learn and digest. Third, word of mouth. You can inquire about or consult people who have reported to work around you and the reputation of training institutions. The teachers in Gansu Branch of Zhonggong Education are all sent by Beijing Research Institute to teach students. You can pay more attention. Hope to adopt ~! If in doubt, please consult the public education enterprises in China.