There is a self-taught mechanical and electrical engineering college of Huatai Education in Dongguan, which is the examiner of South China Agricultural University. The teachers attending the class are all university teachers appointed by the examiner school. Moreover, the examiner school also participates in writing questions and marking papers, with a pass rate of 80%-90%. I think the pass rate is quite high. You can go there and see for yourself. It seems that their spring enrollment is coming to an end, so hurry and have a look!