In the first poem, the lilac knot in the rain is used as a symbol of people's sadness. Obviously, Dai Wangshu absorbed the artistic conception and method of describing sadness from these poems, and formed the artistic conception and image of Rain Lane. This kind of absorption and reference is obvious, but can we say that the artistic conception and image of Rain Lane are the expansion and dilution of the modern vernacular version of the old poem Lilac Knot in the Rain? I don't think so. In forming the artistic conception and image of Rain Lane, the poet not only absorbed the fruit juice of predecessors, but also created his own. First, the ancients used the lilac knot itself as a symbol of sadness in their poems, while Yuxiang imagined a girl as sad as the lilac knot. She has the image of lilacs disappearing in an instant, which is different from the old classical poems written by the poet in his early days and other works full of old poetry. It shows more flavor of the new era. Lilac knot in the rain can't arouse people's hope and disillusionment even more than the girl who is as sad as lilac. This image is a rare creation in the field of expressing the sorrow of the times. Second, in ancient poetry, the lilac knot in the rain is based on real life scenes. The poet added his own imagination according to his own life experience. It is a better artistic imagination than life.