What does it mean to know when it will rain?

Good rain knows that the solar term of rain is the time when plants germinate and grow. It falls quietly at night with the spring breeze, silently moistening everything on the earth. On a rainy night, the fields were dark, and only the lights on the river boat were exceptionally bright. After dawn, look at the flowers with rain. They are beautiful and red. The whole Jinguan city has become a world of flowers and flowers.

This poem imagines the beautiful scenery in the city in spring and the flowers in full bloom after the rain in the morning. The word "heavy" means that flowers are heavy because of rain, which shows the vigorous vitality of red, fat and green after the spring rain.