At the same time that Ma Bao conquered the banners of Erdos, Li Laiheng, the superintendent of Xuanda, was not to be outdone.

After receiving the military order from the imperial court, he led the fourth town under his command to send troops outside the pass, and attacked the Mongolian Chahar Department in the north, Chahar Prince Zierjin Burni is the grandson of Lin Dan Khan, he inherited his grandfather's hatred of the Qing court, has been unwilling to submit to the control of the Qing court, after the Qing court forces withdrew from the Mongolian plateau, he took the lead in leading the Chahar left wing of the four banners to stand on his own, and gradually controlled the entire Chahar department.

After the Xia army left the Great Wall and entered the grassland, Burney knew that the Chahar tribe was no match for the emerging Han Empire, and he led his troops to submit a surrender table to Li Laiheng to express his submission.

Li Laiheng naturally accepted Burnni's submission, and he immediately ordered Bulni to mobilize the Chahar troops in the name of Xuanda Governor and attack the Bahrain and Ao Han divisions of the former Zhaowuda League with him.

Leaving aside the Bahrain tribe for the time being, the Ao Han tribe was the most loyal Mongol tribe to the Qing court by marrying the Manchu royal family in successive dynasties, and after the Qing court withdrew from the Mongolian plateau, the Ao Han tribe still maintained contact with the Qing court.

When the Xia army invaded Shengjing, the Ao Han Department was originally ready to send troops to aid the Qing court, but because of the battle for grassland, a war broke out with the Bahrain Department, so they could only focus on the battle against the Bahrain Department.

Bulni did not oppose Li Laiheng's order, he was ambitious to avenge his grandfather's tragic death, conquered the Ao Han tribe who betrayed Lin Dan Khan, and gathered thousands of Mongol cavalry from the Chahar department to go east with Li Laiheng.

In the face of the menacing Xia army and the combined forces of the Chahar tribe, the leader of the Keshiketeng tribe, Sonomu, who bore the brunt of the attack, knew that he could not resist and surrendered to the Xia army, and the Xia army immediately entered the scope of the original Zhaowuda League.

The news of the Xia army's attack soon spread throughout the grassland, and the Bahrain tribe, which was fighting against the Ao Han tribe, decisively chose to send someone to submit the surrender table to the Xia army, expressing its willingness to respect the Xia emperor as the Great Khan of the steppe and to recruit the Ao Han tribe loyal to the Manchus for the emperor.

Li Laiheng naturally accepted it gladly, he ordered the Bahrain Department to continue to fight with the Ao Han Department, and at the same time ordered all the departments to order them to return to the Shun within a time limit.

Ten days later, Li Laiheng commanded the Fourth Town and the Mongolian allied forces to encircle and suppress the Ao Han Division, the Ao Han Department resisted desperately, and was finally annihilated by the Xia army on the bank of the Harji River.

After this battle, all the tribes of the original Zhaowu League were attached to the Xia Dynasty, and the news of the extermination of the Ao Han tribe soon spread, which terrified the Mongolian tribes that had not yet been annexed.

In mid-November, the Karaqin and Tumut tribes of the original Zhuo Suotu League successively surrendered to the Xia Dynasty, so far, the three Mongolian leagues were attached to the imperial court, and the leaders of the various tribes in the alliance set off after taking the lead, carrying a large number of tributes and horses, cattle and sheep to Jiangning to the south, to meet the Xia Dynasty emperor.

When the Qing court learned that the Mongol tribes had returned to the Xia Dynasty, the Shunzhi Emperor was furious, and he angrily scolded the Mongols as ungrateful white-eyed wolves, who had failed the court's favor to them, and because of the grief of the Ao Han tribe who died bravely, he ordered to posthumously crown the leader of the Ao Han tribe and reward the women married by the Ao Han tribe.

The betrayal of the Mongol tribes undoubtedly made the already declining prestige of the Qing court even worse, and the Shunzhi Emperor began to worry about whether this news would cause the Jurchen tribes in the northeast to follow suit and turn away from the court.

In order to prevent this from happening, the emperor could only send officials to the north to inspect and strengthen the loyalty of the Jurchen tribes to the imperial court.

This worry did not come to an end until mid-December, when the Korean governor Ao Bai led a large army stationed in the DPRK to return to the DPRK.

Ao Bai returned with not only thousands of Eight Banner Army and thousands of Han Army flags, but also tens of thousands of North Koreans and a large amount of money, food, and ordnance, and he emptied almost the entire city of Pyongyang before leaving, despite the bitter pleas of the North Korean monarch.

Well, Ao Bai didn't think about the life or death of the North Korean monarchs, he didn't care what would happen to those people after he left.

After the Qing army withdrew from Korea, Li ?? Knowing that his throne would not last long, he took the initiative to send an envoy to Seoul to beg his brother Li Hao to surrender.

After Li Hao received the envoy, he immediately found Su Fu, who was the governor of Korea, reported the situation in the north to Su Fu and asked Su

The auxiliary led the army north to regain the lost territory.

Su Fu did not refuse Li Hao's request, he counted the troops and horses on the same day, and led the army to Pyongyang. He took the initiative to open the city gate, and led a group of courtiers dressed in white clothes to kneel on the cold snow to meet the heavenly army.

The Xia army immediately regained the city of Pyongyang, and Li ?? Su Fu did not care about how the Korean monarch would treat his younger brother, he sat in Pyongyang, commanded his troops and horses to recover the cities of Hwanghae Province and Pyongan Province, and stationed troops on the banks of the Yalu River to prevent the Qing army from moving south again.

Just after the Xia army recovered the second road in the north, the holy decree sent from Jiangning also happened to be sent to Su Fu, who had the heart to cross the river, but at this time it had entered the cold winter, and it was snowing heavily in North Korea and Liaodong, and the land was almost covered with snow, and it was even difficult to walk.

He could only give up the idea of crossing the river for the time being, let the army spend the winter comfortably in Korea, and wait for the next spring to come, and then wave his army across the river to join his cousins in Liaoyang.

The heavy snow not only blocked the pace of the Xia army, but also made it impossible for the Qing army to attack Liaoyang, the two armies temporarily died down, the Xia army was still trying to consolidate the territory outside the pass, and the Qing army stepped up the training of soldiers and horses, built siege equipment, and waited for spring to come, and the troops besieged Liaoyang.

The cold winter also swept the Mongolian steppe, whether it was the Mongol tribes who returned to the imperial court or did not return to the imperial court, they were troubled by the cold winter, perhaps because they were afraid of the strength of the Xia army.

In order to demonstrate the benefits of the Guishun Imperial Court, and at the same time to buy people's hearts, Su Yan ordered disaster relief to the Mongolian tribes of Guishun after receiving Li Laiheng's report, and sent a large amount of grain and grass to the north.

This move was undoubtedly appreciated and supported by the Mongol tribes, and the Mongol chiefs, who were still on their way to Jiangning to meet the emperor, bowed down to the south and muttered words of gratitude in Mongolian after hearing the news.

Subsequently, they hurried to hurry up, hurrying in the hope of arriving in Jiangning before the first day of the first lunar month, because Su Yan had already announced in advance that he would hold a feast on the day of the Spring Festival to entertain the Manchu civil and military and foreign envoys, and these Mongolian leaders naturally hoped to catch up and participate.

Time flew by, and soon, under the watchful eye, the first day of the first lunar month finally arrived as scheduled, and the Mongol leaders successfully sailed into the port of Xiaguan in Jiangning City before Chinese New Year's Eve and entered the prosperous imperial capital.