According to the Compulsory Education Law of People's Republic of China (PRC), the basis for compiling this textbook is: according to the national education policy, that is, "education must serve the socialist modernization and must be combined with productive labor to cultivate socialist builders and successors with all-round development in morality, intelligence, physique, beauty and labor".

According to the national and local education plan, that is, "the state formulates and implements the education reform and development plan, promotes the education reform, adjusts the education structure and improves the education quality". Textbooks, also known as textbooks and teaching materials, are teaching books written according to the requirements of curriculum standards, which are usually composed of manuscripts, pictures, charts and so on. Textbooks are an important part of school education and an important tool for students' learning and teachers' teaching.

First of all, the content of teaching materials should be scientific and accurate. It must contain the basic knowledge and theory of the subject, which can systematically transfer knowledge and help students establish a scientific world outlook and methodology. At the same time, the content of teaching materials should be accurate to avoid errors and inaccurate information.

Secondly, the teaching materials should be targeted and applicable. According to different subjects and grades, the content of teaching materials should be different and the difficulty should be gradually improved. At the same time, teaching materials should also take into account students' age, cognitive level, interest and other factors in combination with their actual situation and needs, so as to better help students master knowledge and skills.

In addition, the teaching materials should be enlightening and instructive. It should be able to stimulate students' curiosity and exploration spirit, and guide students to study and think independently. At the same time, teaching materials should also provide necessary learning resources and tools, such as notes, indexes, bibliographies, etc. To help students better understand and master knowledge.

Textbooks should be normative and aesthetic.

It shall conform to the norms and standards of the national language and writing, and the writing shall be fluent, concise and easy to understand. At the same time, the arrangement and binding of teaching materials should also be beautiful and generous, in line with students' reading habits and aesthetic needs.

In a word, teaching materials are important tools for students' learning and teachers' teaching. It must be scientific, accurate, targeted, applicable, inspiring and beautiful. Only textbooks with these characteristics can better help students master knowledge and skills and improve the learning effect and quality.