You can buy a copy of Click in Chinese. You want to buy it after grade three, and only in the second semester. There are all classical Chinese, poems, words and so on. In the class to be tested in the senior high school entrance examination, there are also extra points exercises. I think you have heard the translation notes.

Other things I bought, chemistry is not necessarily easy to use. I mainly recite the first 20 places in the periodic table of letters, and then read all the teaching materials (such as chemical formulas, reflecting phenomena and conditions)