After the Battle of Jamburg, Phnom Penh, Genghis Khan led his troops to the northern Jin Dynasty, rested and trained for several years, and in July of the first year of Jin Zhining, he went south to attack gold again. Kexuande House (now Xuanhua, Hebei Province) and Badexing House (now Zhuolu, Hebei Province). Genghis Khan marched straight into Huailai (now southeast of Huailai County, Hebei Province) and Gashan (now Yanqing, Beijing), defeated Jin Youcheng, Wan Yangang and Marshal Youdu, who were in charge of the martial arts, and arrived at Juyong North Exit (now Badaling, Beijing). 8 Jin Jun relied on natural hazards, smelting iron to seal the door, laying iron thistles for hundreds of miles, and guarding the elite soldiers.
Genghis Khan knew that entering the customs was invalid, so he avoided reality and became empty. He only contained a few troops at the north entrance, led the main force to fly across the Gucheng (now Laiyuan, Hebei Province) and left Zijingguan (now northwest of Yixian County) from the east. Jin Ting found that Paihu's interception was defeated by Muqali at the junction of western Jin and Hebei in Yixian County, Hebei Province. The Mongolian army took advantage of the situation to advance eastward and conquered Yizhou (now Yixian County, Hebei Province) and Zhuozhou (now Hebei Province). He also sent Zhe Bie to take the path and attack the south exit of Yong. When the Khitan attacked, he also provided the north exit. Zhe Bie and Kebotsha attacked Juyongguan from north to south, and the Mongolian army entered the encirclement.
In August, a coup took place in Jinting, and Wan Yan Yongji was killed. Xun proclaimed himself emperor (that is, Emperor Xuanzong of the Tang Dynasty) and evacuated all the troops on the border to Zhongdu. In view of the fact that the capital city of Genghis Khan was strong, it was difficult to go south quickly, and he knew that the mainland troops were empty, so he divided his troops into three roads and swept across Liangjiang, Shandong and western Liaoning.
In October, the third son Shu Chi, Chahetai and Wokuotai led the troops to the right army; Since Yizhou went south along the eastern foot of Taihang Mountain, it has successively broken Sui, Bao (now Xushuixi, Baoding, Hebei Province), Dingzhou (now Hebei Province), Zhongshan, Xing, Ming, Magnetism (now Zhengding, Xingtai, Yongnian East, Cixian County), Xiang, Wei, Huai and Meng (now Anyang, Jixian, Qinyang and Mengxian South, Henan Province). To the north bank of the Yellow River, around Taihang Mountain West Road, they plundered Ze, Lu, Liao, Qin, Pingyang (now Jincheng, Changzhi, Zuo Quan, Qinxian and Linfen in Shanxi), Taiyuan, Ji, Ji, Dai (now Jixian, Xixian and Daixian in Shanxi) and Xin (now Shanxi). The left army was led by the emperor's younger brother Hasar and model Yan. Follow Haidong, take Jizhou (now Jixian County, Tianjin) and Huzhou (now Lulong, Hebei Province) and return to the counties in the western Liaoning corridor.
The Middle Route Army was led by Genghis Khan, Muqali and took Xiongxian, Ba, Mo, An, Hejian, Cang, Jing, xian county, Shen, Qi, Li and Ji (now Xiongxian, Baxian, Renqiu, Southwest Anxin, Hejian, Cangzhou Southeast, xian county, Shudao East, Anguo, Lixian and Ji). * * * More than 90 counties have been destroyed, and the two rivers are thousands of miles away in Shandong and western Liaoning, and the people are in poverty. Three soldiers returned to the capital, forcing Jin Xuanzong to offer Yongji's daughter, gold silks and war horses, and Genghis Khan led the army north.