Whether it is an amateur undergraduate or a correspondence undergraduate, if you want to get a bachelor's degree, you must pass the "degree English" exam. Generally speaking, the reason why you can't get a bachelor's degree by correspondence or amateur is that you failed in English for your degree. If you pass an English degree, you can usually get a bachelor's degree.
Taking South China Agricultural University in Guangzhou as an example, about 20% of undergraduate students in amateur adult higher education can pass the degree English exam and get a bachelor's degree.