As a fantasy novel written by famous children's literature writer Xue Tao, the work Xiaoke within the Walls narrates with the first person. The leading character is taken to the Grey Town by a messenger with small handcart. The children lived in the town are all very cold and each does things in his own way. Afterwards, a giant frog monster invades the town. At this time, all the children begin to regain consciousness, take off their gray clothes and defeat the monster hand in hand. Again, they come back to the real world. The entire novel has a rational layout and the anteroposterior plots take concerted action with bold and believable imaginations, which is an excellent work for children's reading.

Xue Tao, born in March 1971, grew up in Changtu, a county of Liaoning province, first class writer. Present the Director of Liaoning Literature Museum, a member of "Children's Literature Committee of the China Writers Association", a member of "Cultural Masters and Four Groups of Talents" of the nation. More than 50 of his Children's literary works have been published. He was labeled as an Outstanding Representative of the fifth generation of children's literary writers in China.