Hello, at present, China still implements nine-year compulsory education. I remember that the year before last, Yunnan implemented free compulsory education in senior high schools for a period of time, which was what you called 12 compulsory education, but it didn't take long to give up. There are too many people against it. The Yunnan Education Commission said that they were too burdened to continue. Henan province is still a nine-year compulsory education. There is no tuition from primary school to junior high school. Many schools charge miscellaneous fees, such as examination fees, thesis fees, exercise books and school uniforms. It is no problem to ask you for 100 yuan a semester, even if it is a matter of time to popularize nine-year compulsory education. I have been in Zhengzhou for five or six years. My friend is from Xuchang. When he was here the year before last, students had to pay for junior high school. I'm not sure about other areas, so high school is free, which is unlikely in a short time. Even if we want to make an estimate, we should first find one or two economically developed provinces to do experiments, such as Guangdong and Shandong.