In other words, the nine-year compulsory education in primary and junior high schools has not yet been completed. It is often used as a metaphor for artists with low academic qualifications. For example, Yi Bo, a star, wrote a wrong word in the program, which attracted the attention of netizens (I have apologized) and was ridiculed by some netizens as "nine leaks".

Because Yibo dropped out of junior high school to be a trainee in an entertainment company, his education stopped at primary school and failed to complete the nine-year compulsory education that school-age children and adolescents in China must receive. Therefore, it was ridiculed by netizens as a fish that slipped through the net of the nine-year compulsory education system.

The significance of nine-year compulsory education;

Service education is a universal, compulsory and free school education for all school-age children and adolescents according to law. It is the basis of improving national quality and the starting point of realizing social equity.

Receiving compulsory education is the basic right of citizens, implementing compulsory education is an important duty of the government, and supporting compulsory education is the common task of the whole society. Compulsory education has always been the top priority of educational reform and development.