Rain and Rain Bell, Cold Cicada's Sorrow "is a classic representative work of Liu Yong, which deeply expresses the deep sorrow and sadness of parting. The lines in the poem, such as' The cicada is mournful and sorrowful, facing the long pavilion at night, and the sudden rain has just stopped ', vividly depict the scene of parting, with sincere emotions and a blend of emotions and scenery. Liu Yong wrote a timeless masterpiece of farewell through this poem, expressing the true emotions and feelings of lovers' farewell poems with a lingering and poignant touch. This poem has a great influence and is one of the widely circulated "Ten Great Songs of Song and Jin" during the Song and Yuan dynasties.