Career
Ruling for less than a day on February 9, 1234 before being killed by the Mongols in the Siege of Caizhou, he holds the record of being the shortest-reigning monarch in Chinese history. He was born as Wányán Chénglín (Chinese: 完顏承麟). Before his ascendance to the throne, he had been a generalissimo under Emperor Aizong of Jin.
The Mongols besieged Caizhou in 1234, which is now Runan in Henan.
On the night of February 8, Aizong decided to flee from the town, and asked Chenglin to be the next emperor. On the next day during coronation, the Mongolians had already broken the city walls.
Aizong fled, and Modi tried to reinforce the palace but failed. He was killed by the Mongolian forces who entered the palace later that day.