sentences:  Towards the end of 1232, Emperor Aizong fled from Bianjing, crossed the Yellow River, and sought shelter in Guide (歸德; present-day Shangqiu, Henan Province), before settling down in Caizhou (蔡州; present-day Runan County, Henan Province).The Han Chinese general Shi Tianze led troops to pursue Emperor Aizong as he retreated and destroyed an 80,000-strong Jin army led by Wanyan Chengyi (完顏承裔) at Pucheng (蒲城).In the eighth month of 1233, the Mongols asked their ally, the Southern Song dynasty, to attack the Jin dynasty at Tangzhou (唐州; present-day Tanghe County, Henan Province).