Why is it a small garden to hoe melons?

This poem was written in 1 18 1 year. The author was 57 years old and was dismissed from office. These two sentences are about the life scene at that time. Writing and reading Tao poetry in the previous sentence is the expression of the author's leisurely mood. The title of the poem is a small garden, so when it suddenly rains in the garden, we can only hoe melons in the light rain in order not to miss the farming season. The above is one of the reasons why small gardens are the source of hoeing melons.