Long Yearning was the name of the heroine in the ancient Chinese novel Song of Everlasting Sorrow. Tong Hua was a representative of contemporary Chinese works such as " Startling Heart by Each Step ". The four great clans of the Central Plains were a common concept in ancient Chinese novels. The four great clans of the Central Plains were the Yan, Han, Zhao, and Zheng clans. These families had an important position in Chinese history and influenced the process of Chinese history to a certain extent.