By the year of Genghis Khan's death in 1227, the Mongols had defeated Western Xia and thanks to the efforts of Muqali, they had also taken virtually all the territories north of the Yellow River in China including Zhongdu, the Jin Dynasty capital.
[1] When Ögedei Khan succeeded his father, he continued to launch offensives southwards against the Jin Dynasty where its new capital was now in Kaifeng.
[3][4] Jin historian and poet, Yuan Haowen wrote that Chenheshang personally led 400 of his elite cavalry to attack 8,000 soldiers in open battle.
After the battle was over, Yila Pua released the messenger and sent him back to Ögedei Khan with the following message: “We’ve got all our soldiers and horses ready - come on over and fight!”.
[6] Ögedei was furious upon hearing the news of defeat and dismissed Doqolqu, the commander in charge from his post.