Organic Chemistry: Basic Organic Chemistry, edited by Xing, Higher Education Press, the second or third edition (commonly known as Xing Ben, the organic content is extremely comprehensive, with two volumes), and the supporting exercises are organic chemistry examples and exercises, edited by Weiwei Pei, Higher Education Press. Or R.T. Morrison's organic chemistry (rich and interesting)

Inorganic Chemistry: Inorganic Chemistry by Higher Education Press (introduction, two volumes), Inorganic Chemistry by Wuhan University (upgraded version, blue book, two volumes).

Physical Chemistry: Physical Chemistry of Nankai University and its supporting exercises (the textbook is divided into two volumes, with comprehensive contents and difficult exercises).

Analytical Chemistry: The contents of each edition are similar, so you can choose a suitable one. The key is practice.

Experimental course: these countries will only be used in competitions! "Experiment Course of Chemistry Competition in Senior High School" is also good, and a college chemistry experiment book is needed (available in all versions, as long as it is used by the chemistry department). Ask the teacher.

Provincial Competition: It is enough to look at organic chemistry and inorganic chemistry, and do more preparatory questions.

National competition: to master the four major chemistry, do problems (MAX) and do experiments.