The white one is very clean.

Just like eating all the birds and throwing them into the forest, the land is so clean. It's like eating all the birds and throwing them into the forest, leaving a vast expanse of white land with nothing clean.

This sentence is a poem describing the snow scene in A Dream of Red Mansions, which comes from Baoyu's dreamland. The whole poem is as follows: "The moon is hard to meet, but the colorful clouds are easy to disperse. The heart is higher than the sky, based on this. Romantic dexterity attracts people's resentment, and longevity begets slander. Affectionate childe empty. " The sentence "all white, really clean" vividly depicts the pure scene under the heavy snow, and also implies the purity and detachment of Baoyu's mood.