2. According to Su Shi's records in the Song Dynasty, the singing method of Yangguan Triassic is as follows: Weicheng is rainy and dusty, guest house willow, guest house willow; (a stack) advise you to do more with a glass of wine, and advise you to do more with a glass of wine. (A stack) There are no Yangguan people in the west, and there are no Yangguan people in the west. (Three-layer stack)
3, except the first sentence, every sentence is sung once, only to know that the' three folds' of ancient books are like this.