The second sentence closely follows the first sentence, which describes the scenery after the rain. From a distance, it seems to be there, but from a close look, it depicts the hazy scene of grass soaking in rain in early spring. Write down the characteristics of spring grass when it just germinates, if not, sparse and short. Can be compared with Wang Wei's "fog, it disappears when I enter them" and "the color of the mountain is yes and no"