Emperor Lizong of Song, personal name Zhao Yun, was the 14th emperor of the Song dynasty of China and the fifth emperor of the Southern Song dynasty. He reigned from 1224 to 1264.
His original name was Zhao Yuju but later changed his name to Zhao Guicheng and then finally changed his name to Zhao Yun being elevated to a imperial son. Although he was a descendant of the Song dynasty's founder Zhao Kuangyin through his son Zhao Dezhao and hence a member of the imperial clan, Zhao Yun was not in line to succeed to the throne as his family had no political status. Shi Miyuan, who was the chancellor for many years, collaborated with Empress Dowager Yang and when Emperor Ningzong eventually died in 1224, Shi, along with Empress Dowager Yang, supplanted the reigning crown prince Zhao Hong and replaced him with Zhao Yun as emperor, reigning with the era name Baoqing and the temple name Lizong. The 40-year-reign of Emperor Lizong did little to nothing to improve the Dynasty and instead sought pleasure even as the Mongols were terrorizing the borders. He died at age 59 in 1264 and was succeeded by his nephew Emperor Duzong.