From Wang Shifu's "The Romance of the West Chamber: Farewell at the Changting Pavilion":

"The blue sky, the yellow flowers, the wild geese flying from the north to the south, who comes at dawn and is drunk in the frost forest? It's always tears when leaving!"

"Who is drunk in the frost forest at dawn? He always sheds tears when leaving!" This sentence is what Yingying asks and answers to herself. In the mind of Yingying, who shed tears all night in pain for parting, the whole mountain is filled with tears. The red leaves were moved by her separation and turned red - an exaggerated technique was used to express Cui Yingying's infinite sentimental mood because Zhang Sheng was about to leave. The word "dye" connects the connection between scenery and emotion, making the natural scenery blend into the solemn sorrow of separation, and cast a layer of melancholy emotional color, "Who comes in the morning to dye frost and get drunk in the forest? People always cry when leaving", In Li Ren's eyes, Shuang Lin's drunkenness was dyed red by the blood and tears of farewell. The word "drunk" not only expresses the color of the maple forest, but also gives the mood of a person who cannot control himself under the weight of separation. At this point, the bleak autumn scenery and the sad state of mind have become one and cannot be separated, creating a euphemistic, deep, sentimental and desolate artistic conception, reaching the artistic realm of blending scenes.

The person who uses this sentence as his signature may be sentimental, have some attainments in ancient poetry, and be intelligent and sensitive. But this is not certain. It is also possible that the person saw this sentence somewhere, liked it, and used it as a signature. Please adopt.