What does this proverb mean before and after Grain Rain?

Before and after Grain Rain, we planted melons and beans.

This is a folk proverb, which means that when the solar term comes to Grain Rain, the rain moistens the earth, which is the best time to sow seedlings, cultivate melons and order beans. As the saying goes, "Rain makes a hundred valleys." .

Grain Rain: The sixth of the 24 solar terms falls on April 20th or 21; It means that precipitation is obviously increased, which is beneficial to grain growth. As the name implies, sowing grain and rain is also the best season for transplanting rice seedlings and planting melons and beans. Grain Rain is one of the 24 solar terms, and Grain Rain means that the increase in rainfall is of great benefit to the growth of food crops. From April 19 to April 2 1 every year, when the sun reaches 30 longitude, it is Grain Rain, agricultural proverb and poem.