Of course, when I saw Xie Huimin's exercise notes, I always felt that Pei was not so good, and there were too many topics. Personally, I think the best exercises are Zhou Minqiang's mathematical analysis exercises and Xie Huimin's lecture notes on mathematical analysis exercises. In contrast, Zhou Minqiang is slightly more difficult. For Xie Huimin, passing the exam of Xi Jiaotong University is enough. Teacher Xie's exercises have no answers, only comprehensive questions have answers, which is very helpful to exercise his analytical ability.

Of course, some topics in this book are very difficult. You can refer to the Course of Mathematical Analysis by Shi Jihuai of the Chinese University of Science and Technology. When I was in the postgraduate entrance examination, I read Teacher Xie's first book completely and wrote the corresponding answer. I can ask if necessary.

I didn't finish the second one because of time.