This sentence comes from the Song Dynasty poet Su Shi's "Water Tune Song Tou": "People have joys and sorrows, and the moon has ups and downs. It was difficult to accomplish in ancient times. I hope that people will last for a long time and thousands of miles will be beautiful. " Shuidiao Tou is also known as Hui Yuan Song, Kaige, Shuidiao Tou, Flower Offender and Flower Offender. It is based on Mao Zhengti, with 95 words in two tones, nine sentences in the first paragraph and ten sentences in the second paragraph.