I did a math contest four years ago, which was compiled by Huang Dongpo. There should be a new edition in these years, so I'll just talk about my feelings at that time for reference only. Sorry, I haven't heard of that book. .

I remember that I bought all the math and physics at that time. This book is mainly a collection of various types of topics. Of course, any math book is a collection of exercises. . What impressed me the most at that time was that there was a sentence in it, which seemed that mathematics was a collection of problems. . In short, it makes people feel very deep. . Similar words are found in every chapter. What can I say? It's inspiring.

I think the choice of topic itself is quite good, especially it always gives several formulas or figures at the beginning of each chapter, and there are no redundant comments. If you carefully taste it, you will find that this is the essence of this chapter. .

Another feature is the narration position, sometimes some theorems, and sometimes some expansion problems. In short, the typesetting is very reasonable.

I don't know how it has been revised for so many years (almost five years), but I like it. And the notebook is bigger.

The landlord is learning about another book, but I don't know that. Anyway, if you choose one and do it, you will gain a lot. Sometimes I even do it two or three times.

Is this it?