The math series written by Grandpa Li Yupei is great, which has benefited me a lot. A math commander makes me enjoy it, a math journey to the west makes me memorable, a math zoo makes me fondle admiringly, and the adventures in this math kingdom make me forget all about eating and sleeping.

The protagonist Tintin is very good at mathematics. He was invited to visit the curved kingdom, and his friend Beckham wanted to go, so they came to the curved kingdom together. Here they went to the dangerous math palace, the terrible wildlife park, played interesting math rings and were cheated by a "thief" once.

In this process, Beckham, who is not good at math, encountered many difficulties. While knocking down difficulties, he also fell in love with mathematics and improved his math scores. I used to think I was good at math, but after reading this book, I felt I was not good at math. I can't do many questions in the book, even if I read the answers and analysis, I don't understand them thoroughly.

While slowly understanding these problems, I also learned a lot of knowledge: there are some laws that are difficult to find, binary and decimal systems that make me feel convenient, the golden ratio of people, and pi that makes me feel difficult. Through this book, I have a deep understanding of mathematics and truly realize that mathematics is a delicate and interesting subject.