Emperor Chengzong of Yuan- Temür Khan (1265-1307), is the grandson of Kublai Khan.

Soon after he was enthroned in 1294, Emperor Chengzong ceased all the external expansions and dedicated himself to rectifying domestic stratocracy. He posed restrictions on the forces of other khanates, derated part of the taxes and made new laws and regulations. Thereafter, social conflicts were eased to a certain degree. Meanwhile, he suppressed the rebellions of khanates in the northwest and bettered the chaotic state of that area.

During his reign, Chengzong kept the empire in the similar way as that of Kublai and managed to maintain a relatively stable economy and politics. However, troubled by lack of treasury assets and devaluation of currency notes, he failed to make ends meet since he was too addicted to bestowing rewards to his followers. What's more, he once sent troops to collect 800 concubines in today's North Thailand, which caused regional turmoil in Yunnan and Guizhou provinces at that time.

Sick in his late years, he appointed his wife Bibi-Khanym and ministers from Semu people (namely other than Han, Mongolian and Nan people) to attend state affairs. As a result, his governance started to corrupt.