What is the central idea of Dai Wangshu's Rain Lane?

Rain Lane, we are introduced into a dreamlike hazy realm, and the whole poem expresses the poet's extreme sadness and pursuit of endless loss with its beautiful and low tune. It is the artistic expression of the poet's beautiful vision and illusory pursuit. The "I" in this poem is a young man who is addicted to emotional pursuit. He often wanders alone in the rainy lane in the south of the Yangtze River, waiting for a good girl. "She has the same color, fragrance and sadness as lilac." This is a beautiful image, but at the same time it is endowed with sadness by the poet. Her heart was full of "indifference, sadness and melancholy" and "she approached silently". However, she finally passed by, which made me disappointed and breathed a sigh of relief. "She" is a dream, imperceptible and elusive. "He" hesitated like this, pursuing in hesitation, pursuing ... but "I" could do nothing. Finally, in the elegy of the rain, everything about "her" disappeared into the haze like a wisp of smoke and fog, and never came back. Only "I" pursue melancholy and "I" sigh of despair, which further casts a layer of sentimental mood on the already low tone of poetry and makes it more sorrowful.

The lyric hero in the poem has a sense of tragedy and loneliness, because the beautiful girl he expects to symbolize the ideal is just a dreamlike hazy image. Because the lyric hero's singing is closely linked with the image symbolizing the girl, a poetic image with rich connotation and far-reaching artistic conception (a long and lonely rain lane) is formed, which makes the whole poem infected with the style characteristics of symbolic poetry from content to form. However, because the emotional experience conveyed in the poem is based on the details of real daily life, the poem has got rid of the elusive mystery of symbolic poetry (such as the works of French poet Whalen revered by Dai Wangshu). Dark and narrow alleys and rainy alleys are common scenery in the rainy season in Jiangnan towns. However, "I" and "a sad and resentful girl" in the poem are not concrete portrayal of real life, but lyrical images full of symbolic significance. These are not illusory images, but clear and hazy, bright and deep, and vague. Besides being influenced by symbolism poems, Rain Lane also draws lessons from China's classical poems. "Spring birds don't spread news outside the cloud, lilacs are sad in the rain" is the noun of Li Wangjing, a master of the Southern Tang Dynasty. Dai Wangshu absorbed the methods of describing sadness and creating artistic conception in old poems to express his sadness.

Rain Lane has also made outstanding achievements in musicality. The whole poem consists of seven sections, each with six lines. Each line is different in length and rhyming position, but the interval is good and rhymes to the end. In particular, the poet skillfully used the overlapping of words, the pause of sound groups and the repeated lengthening of the rhythm of poetry, forming a music melody that echoed back and forth and was breathtaking. Words such as "Rain Lane", "Long", "Girl", "Fragrance" and "Melancholy" appear repeatedly in rhyme, conveying a flowing artistic conception and a feeling of low return and confusion.