I don't know when a folk ballad became popular: Xia, Shang and Western Zhou, and the Eastern Zhou was divided into two periods; the Spring and Autumn Period and Warring States unified the Qin and Han Dynasties; the three parts were Wei, Shu and Wu, and the two Jins were extended forward and backward; the Southern and Northern Dynasties stood side by side, and the Sui, Tang and Five Dynasties were passed on; after the Song, Yuan, Ming and Qing Dynasties, the dynasty ended...
Purpose: Understand the historical process through adapted stories one by one