The first grade is divided into spring, summer, autumn and winter.

There are four natural cycles: spring, summer, autumn and winter. According to the time sequence of the four seasons, the author divides them into four natural sections, introduces farmers' farming activities all year round in children's most natural language, praises farmers' hard work and expresses their joy of bumper harvest.

This passage is a childlike poem written by the richest man. Through the description of several representative things such as grass buds in spring, lotus leaves in summer, ears of grain in autumn and snowman in winter, the characteristics of the four seasons are expressed. Poetry uses personification and parallelism, and the language is cordial and vivid.