Tang Jiafeng's review books and handouts should be used by more people. Students who have signed up for online classes must be this book, which can be used at least three times. After listening to the online lessons, you will find that they are basically explained by conceptual examples. This book is as detailed as Mr. Tang's online class, but it is too detailed and a bit cumbersome. For students with poor foundation, you can take a serious look. But we should grasp the time, because it will be really anxious to start reviewing in March, because Mr. Tang does have more courses.

Second, The Complete Works of Li Zhengyuan

Li Zhengyuan knows less about the whole book and doesn't use it as much as Zhang Yu and Tang Jiafeng, but this book is actually very good, but its reputation is not as good as that of the first two teachers. This book was originally a famous complete works of Li Er. Later, after Li Yongle withdrew, the line generation part was written by Peking University You.