1233, Jin aizong was chased by Mongolian army to Cai Zhou (now Runan, Henan). Mongolia jointly attacked gold in the Southern Song Dynasty. 1234 (Tianxing three years) In the first month, the Mongolian and Song armies stepped up their siege of Cai Zhou. Aizong summoned hundreds of officials on the night of the ninth day of the first month and decided to preach to Wan Yan Cheng Lin, the then Oriental Marshal. Wan Yan Cheng Lin cried and worshipped, the last straw. Ai Zongdao: "The joint weight is inconvenient for pommel horse riding. Green days are neat. If you get rid of it, the country will be inexhaustible (sitting on the left, the position of the monarch). " In this way, Wan Yan Cheng Lin became the emperor. He was the last emperor of the rulers.
After the ceremony, the first emperor immediately led the troops to meet the enemy. At this time, the Southern Song army invaded the South Gate of Cai Zhou, and Jin Aizong hanged himself. The last emperor heard him cry. "Before he finished crying, the city collapsed." The last emperor was killed in the disorderly army. At this point, the rulers perished.