2. Reasons for the demise of the Southern Tang Dynasty: In 958, Li Jingxian, the leader of the Southern Tang Dynasty, presented fourteen states in Jiangbei and Huainan and became a vassal state in the later Zhou Dynasty. In 96 1 year, Li Jing died, and his son Li Yu succeeded to the throne, which was the last master. By 1975, Song Bing went south and defeated Jinling, and Li Yu became the prisoner of Song, and the Southern Tang Dynasty perished. From 1937 to 1975, it was thirty-eight years before and after the Southern Tang Dynasty. Li Yu himself has artistic talent, but no political talent, because of the national strength falling off the shelf and domestic political corruption. Civil servants and military commanders were short, destroying the Great Wall of Wan Li, leaving the Yangtze River unguarded, harming hawks, and sending the champion familiar with Jiangnan Ferry to the north to indulge in debauchery. Li Yu is a scholar, brilliant, but not domineering, so he has to write poems and drink all day to entertain himself.