The wonderful digital kingdom is a gift from the mathematician Professor Li Shupei to the children. This is an interesting mathematical fairy tale, and the short story in the book is very humorous. There are also some math problems interspersed among them.

The story begins like this. Two fifth-grade pupils accidentally broke into the digital kingdom and found that the two armies were at war, which was quite lively. As soon as I knew the situation, it turned out that odd and even numbers were at war. In the kingdom of numbers, 0 is king. 1 and 2 are the commanders of the odd and even teams respectively. On this day, Commander 1 and Commander 2 were fighting for numbers. There is nothing the king can do. Finally, the wise Xiao Qiang learned from King No.0 that Commander No.2 worshipped Pythagoras, the ancient Greek mathematician. In the words of mathematicians, all the numbers are you and me, me and you-blind date numbers. Quelled the war.

There are several children's favorite stories about the Monkey King and Pig Bajie, which show the Monkey King's cleverness and wit and Pig Bajie's simplicity and loveliness.