Ningjiasu was the third child of Emperor Xuanzong. His mom was Emperor Xuanzong's courtesan, Lady Wang (王氏), who was after death regarded as "Sovereign Minghui" (明惠皇后). After Emperor Xuanzong climbed the position of royalty, he gave the title "Ruler of Sui" (遂王) to Ningjiasu. Ruler Xuanzong's eldest child and beneficiary evident, Wanyan Shouzhong (完顏守忠), and also Wanyan Shouzhong's child, both kicked the bucket rashly, so in 1216 Emperor Xuanzong pronounced Ningjiasu, his next most established surviving child, as his beneficiary clear. Ningjiasu was given the sinicised name "Shouxu" (守緒).
At the point when Emperor Xuanzong kicked the bucket in January 1224, Wanyan Shouxu acquired the position of royalty and turned out to be verifiably known as Emperor Aizong. In 1224, he instated his associate Lady Tushan (徒單氏) as his sovereign partner. Amid his rule, Emperor Aizong attempted to resuscitate the Jin line, which was nearly crumple because of his forerunners' arrangements. He finished the wars against the Southern Song tradition, accommodated with the Jin line's previous partner Western Xia, founded inside changes in his organization, dispensed with degenerate and inept authorities, and advanced military commanders who opposed the Mongol intrusion and recouped lost domains from the Mongols. In any case, the Mongol Empire had turned into an impressive power by then, and in 1227 it totally vanquished Western Xia and focused its assaults on the Jin tradition.
In 1232, the Mongols dispensed a devastating thrashing on Jin powers at the Battle of Sanfengshan (三峰山之戰) and decimated the heft of the Jin military. They went ahead and attacked the Jin capital, Bianjing (汴京; exhibit day Kaifeng, Henan Province). The safeguarding Jin strengths set up savage resistance. In the meantime, a torment hit Bianjing; around at regular intervals, more than 900,000 dead bodies must be transported out of the city, barring the dead assemblages of the individuals who were too poor to be in any way given a legitimate entombment.
Towards the end of 1232, Emperor Aizong fled from Bianjing, crossed the Yellow River, and looked for safe house in Guide (歸德; introduce day Shangqiu, Henan Province), before settling down in Caizhou (蔡州; display day Runan County, Henan Province). The Mongol general Shi Tianze drove troops to seek after Emperor Aizong as he withdrew, and wrecked a 80,000-in number Jin armed force drove by Wanyan Chengyi (完顏承裔) at Pucheng (蒲城). In the eighth month of 1233, the Mongols asked their partner, the Southern Song tradition, to assault the Jin administration at Tangzhou (唐州; show day Tanghe County, Henan Province). Sovereign Aizong tried to make peace with the Southern Song line, so he sent an emissary to caution them that if the Mongols vanquished the Jin line, they would assault Southern Song next. The Southern Song tradition disregarded the notice.
On 9 February 1234, the unified strengths of the Mongols and Southern Song tradition blockaded Caizhou and vanquished the city. Ruler Aizong did not wish to be recollected in history as the head who saw the fall of the Jin tradition, so he passed his honored position to his general Wanyan Chenglin (Wanyan Chengyi's sibling), and afterward dedicated suicide by hanging himself. At the point when Wanyan Chenglin got news of Emperor Aizong's demise, he accumulated his adherents and held a service to grieve the head and after death respect him with the sanctuary name "Aizong". When the service finished, Caizhou had been invade by Mongol strengths. Wanyan Chenglin was executed in real life. His demise denoted the end of the Jin line.
Head Aizong's remaining parts were partitioned between the Mongol general Taghachar and the Song general Meng Gong (孟珙). Taghachar acquired Emperor Aizong's hands while whatever is left of the head's remaining parts were reclaimed to Lin'an (臨安; introduce day Hangzhou, Zhejiang Province), the capital of the Southern Song line, and offered as a yield in the Song rulers' tribal sanctuary. Notwithstanding, the Song supreme court in the long run regarded Hong Zikui (洪咨夔's) proposal and had Emperor Aizong's remaining parts covered in a jail vault. Rashid-al-Din Hamadani's Jami' al-tawarikh gave an alternate record of the destiny of Emperor Aizong's remaining parts: It expressed that the head's body was incinerated by his own bodyguards and the slag were dumped into the stream.