The saddest poem in the Legend of the Sword and Fairy was," You are buried in the mud under the spring, and my bones are broken. I am sent to the world with snow all over my head." This sentence came from the Tang Dynasty poet Wang Zhihuan's "Climbing the Stork Tower." In this poem, the poet expressed his sadness at parting and his helplessness at the passage of time. The characters in the Legend of the Sword and Fairy, the Blue Phoenix and the White Phoenix, expressed their deep feelings in this sentence because they had experienced a lot of pain and separation. This sentence was widely used as the theme song of the Legend of the Sword and Fairy game and became a classic sentence in Chinese culture.