Once the sea was difficult for water; There are no clouds except Wushan. But since the water is still flowing, although we cut it off with our swords; Raise a glass to drown your sorrows. Hold your hand and grow old with your son; The son is happy, but life and death are rich, and we are all unhappy-the end of the sky; We met. We understand. What is the relationship between acquaintances? Flowers are similar year after year; Every year is different. Lu You in The Book of Songs and two poems by Tang Wan.