Shanghai Book City is the best choice. It's everywhere on the first floor. Take your time.

Here are three recommendations, you can choose according to your own situation:

If the foundation is average and the results are unstable, it is recommended to choose Shanghai homework and gold medal as a lesson to practice.

Students with moderate grades can choose the synchronous ordinary version of One Lesson and One Practice published by East China Normal University, which is an auxiliary teaching material used by most schools in Shanghai. There are also Complete Solutions for New Textbooks and Growing with You.

Children with high grades and solid foundation can choose the enhanced version of One Lesson and One Practice published by East China Normal University if they want to train. "New ideas" will be selected by many private schools; There are "Shibei junior high school gifted students training materials" and so on.