Compulsory education in primary and secondary schools is a national public welfare act, and the teaching materials are strictly examined by the Ministry of Education. Both of them represent the authority of national education, and the irrelevant content added in textbooks is likely to bring wrong guidance to students.

Teaching-assisted links and two-dimensional code implantation are an obvious commercial behavior, and there is no clear supervision system. Advertising in teaching materials does more harm than good. Its hazards mainly include the following points:

1. Unfair commercial competition: The implantation of supplementary teaching materials has no clear selection criteria and is not open, which undermines the healthy competition in the supplementary teaching market and is not conducive to the circulation of high-quality supplementary teaching resources.

2. The corruption of rights breeds: which department approves the advertising information implanted with teaching AIDS, whether the expenses generated by advertising enter the national financial system, and whether the advertising price standard meets the national regulations. These are unknowns, and it is easy to breed rights corruption in this opaque field. If the country invests a lot of energy in this field, which runs counter to the essence of national education, it will not be worth the loss, so it is better to stop it directly.

3. The quality of supplementary links cannot be guaranteed: the content of supplementary materials has a great influence on students' learning, and the supplementary links implanted in supplementary materials are not the links of official website, so the quality of the content cannot be guaranteed. Recently, there has been an incident in which the supplementary links in the teaching materials jumped to the yellow website after logging in. Although this is not the subjective behavior of the relevant departments, its adverse effects have to alert us.

As can be seen from the above, it is reasonable for the Ministry of Education to prohibit the implantation of supplementary links in teaching materials. What is controversial now is whether it is reasonable to impose uniformity on all enterprises. Many people think that it is easy to accidentally injure formal educational institutions. In fact, this kind of worry is completely unnecessary. As a commodity, auxiliary materials have their own market operation rules. As long as they maintain healthy competition and highlight product quality, they can win users. You don't need to bind textbooks to get users. Regular educational institutions will not question the regulations of the national education department, but will use this decision of the state. After all, it is good for education.