Ögedei Khan
On the way from Dengzhou to Kaifeng, the Mongols easily took county after county, and burnt all the supplies they captured so as to cut off Wanyan Heda's supply lines. Wanyan Heda was forced to withdraw, and ran into the Mongols at Three-peaked Hill in Junzhou. At this point, the Jin troops on the Yellow River were also diverted southwards to meet Tolui's attack, and the Mongol northern force under Ögedei Khan seized this opportunity to cross the frozen river and join up with Tolui – even at this point, their combined strength was only about 50,000. By 1232, the Jurchen ruler, Emperor Aizong, was besieged in Kaifeng. They together smashed the Jin forces. Ögedei Khan soon departed, leaving the final conquest to his generals.