If a person is poor, but carefree and satisfied, his life is not brilliant, but he is also happy. On the other hand, if a person is always rich and unhappy, his life will be a failure and haggard.

In fact, many foreign scientific researchers have found that the happiness index of some poor places is higher than that of some rich countries, which shows that wealth is not the capital of happiness, and poverty should not be the starting point of sadness.

City mice and country mice are selected from Aesop's fables;

There are more than 30 fables, most of which are related to animals. The stories told in the book are short and pithy, and the images portrayed are vivid and vivid. Every story contains philosophy, or exposes and criticizes social contradictions, or expresses understanding of life, or summarizes daily life experience.

This collection of fable authors expresses the social relations at that time by describing the relations between animals, mainly the unequal relations between the oppressor and the oppressed. The author of the fable condemned the oppression of people by society at that time and called on the bullied people to unite to fight against the wicked.