Do you have any friends who know about the self-study exam or the joint exam?

I have a friend who just finished the self-taught exam in the summer vacation. Generally, on September 15, the tuition fees of engineering and science are different, which is 4,500 yuan for engineering and 4,700 yuan for science. Some schools will add 15% to the tuition fee. Of course, self-taught exams are better than adults. He has got his diploma, which is exactly the same as the self-taught exam, and can be found on the Internet just like the self-taught exam.