Compared with the regular song, the slow song has longer words, less rhyme and a slower rhythm. Although it is a single song, it is particularly long and graceful when sung. There is a saying in the T

Compared with the regular song, the slow song has longer words, less rhyme and a slower rhythm. Although it is a single song, it is particularly long and graceful when sung. There is a saying in the Tang Dynasty that "slower singing will lead to more affection". With the name "Sheng Sheng Slow", it seems that Chao Buzhi's song at that time was more touching and beautiful than ordinary slow songs. It was not until the late Southern Song Dynasty that "Sheng Sheng Slow" became "Slow Sound" because of Jiang Jie's song "Autumn Sound".