What emotion did Chunyu express in a freehand way?

Spring Rain is a love poem written by Li Shangyin, a poet in the Tang Dynasty. The spring rain is continuous, and the feelings are lingering. This poem expresses the yearning for distant lovers with the help of misty spring rain. At the beginning, point out the season first, then write about the sadness of seeing the old place again, then write about looking at the building through the rain curtain, looking for lost confusion, and finally only each other's thoughts and dreams are left. Step by step, nostalgia is like endless rain. The artistic conception, emotion, tone and atmosphere of the poem are very clear, beautiful and moving. With the help of the misty spring rain, poetry blends into the protagonist's confused mood and vague dreams, setting off the loneliness of parting and the sincerity of missing, forming a seamless artistic realm. Li Shangyin's poems make good use of some representative images to express the most beautiful things in the poet's heart. This poem "Spring Rain" also symbolizes the poet's unspeakable feelings and expresses the poet's sad feelings, which is quite aesthetic.