Zhao Tai handed over Sizhou and Suzhou to the Southern Song Dynasty and immediately withdrew his troops from Suining.

In Zhao Tai's view, the Jin Kingdom is really almost over this time, and once the Jin Kingdom is destroyed, Suining, who has nothing to defend, will definitely not be able to hold on for a long time.

Although Zhao Tai dedicated his generals Si and Si to the Southern Song Dynasty and introduced the Song army into the Central Plains, Zhao Tai did not have absolute confidence in the Southern Song army.

If the Southern Song Dynasty could not seize the Central Plains and restore the Guanhe defense line, then the Central Plains would become a battlefield between Mongolia and Song Dynasty.

In troubled times, where are the people the most miserable? It is not the people in enemy-occupied areas, but the people in places where the two armies repeatedly see each other. Their lives are the most miserable.

Therefore, Zhao Tai ordered Suining's troops and civilians to move to Shandong.

When Zhao Tai moved his focus to Shandong, Wokuotai's army had already arrived at Daming Mansion on the north bank of the Yellow River.

In Kaifeng City, Emperor Wanyan Shouxu of the Jin Kingdom learned the news and immediately sent out fast horses to ask for help from various military envoys and asked all towns to prepare for support.

Because the Mongolian cavalry destroyed eastern Henan, production near Kaifeng was destroyed. Kaifeng had no resources and could feed too many troops.

The Jin Dynasty court could only let a part of the army guard outside and go to distant places to eat.

Now that the Mongolian army was about to attack Kaifeng, the Jin court hurriedly summoned troops from outside and returned to Kaifeng.

Wanyan Heda, who was relatively close to Kaifeng, immediately led his troops into the city, but neither Wuxian nor Zhao Tai sent troops to Kaifeng.

In this regard, Zhao Tai gave his own explanation. If the main force of the Jin army entered Kaifeng and was destined to be trapped by the Mongolian army, a few troops must be left on the periphery.

This can not only contain the Mongolian army and prevent it from attacking the city with all its strength, but also continuously attack the Mongolian army and look for opportunities to win.

After the Mongolian army conquered Tongguan and occupied Luoyang, the Jin's Guanhe defense line had become ineffective, and the Jin army abandoned the Guanhe defense line.

The Mongolian army approached the Yellow River. Since Subutai led the cavalry on the south bank, the Jin soldiers in Kaifeng did not dare to go out of the city to block the Mongolian army from crossing the river. They could only hide in the city and watch the main force of the Mongolian army build a pontoon bridge and easily cross the Yellow River.

In order to defeat Kaifeng this time, Wokuotai not only dispatched the Mongolian headquarters, but also mobilized a large number of elite Han troops and Khitan troops.

Like the Xiongnu and Turks that once emerged on the grasslands, the Mongol Empire could not compare with the Central Plains dynasty in terms of population. After unifying the grasslands, the Mongol Empire had a maximum population of one million and a maximum of more than 200,000 elites.

With its own military strength alone, it would be difficult for the Mongolian Empire to destroy the Xia Dynasty and the Jin Dynasty, let alone sweep across West Asia, Central Asia, and Eastern Europe, occupy the Central Plains, and destroy the Southern Song Dynasty.

In order to solve the problem of insufficient military strength, the Mongolian Empire adopted the strategy of "conquering the enemy with the enemy". They recruited the armies of other ethnic groups as servant armies to assist the Mongolian army in fighting and ruling the place, so that they could maintain their huge empire.

In the western region, Mongolia incorporated some Semu people. In the northern region, the Mongolian Empire incorporated a large number of Han and Khitan armed forces, and made their leaders hereditary genweiwanhuhou.

These nobles of ten thousand households were attached to the Mongolian Empire. The Mongols gave them titles to ensure their safety, and they were responsible for assisting the Mongolian army in fighting, providing money and food for the Mongolian army, and managing the population and place.

They manage the military, finance, population, and justice within their jurisdiction, which is equivalent to the vassal towns during the Tang Dynasty.

At this time, in Hebei, Shandong, Shanxi, and Guanzhong, there were nearly a hundred families loyal to the Mongolian Han princes, large and small.

The smaller ones occupy one state and one county, while the larger ones span across states and counties, controlling territory in several states, covering an area of ​​2,000 to 3,000 miles, leading tens of thousands of troops, and six of the most famous families are among them.

They are the Zhending Shi family, the Shuntian Zhang family, the Dongping Yan family, the Yidu Li family, the Xijing Liu family, and the Gongchang Wang family.

These six great princes were called dafan at that time.

These vassal towns were powerful, but they were still a little short of the founding of the country, so they had no choice but to rely on Mongolia.

In this expedition, Wokuotai dispatched nearly 100,000 men and horses of his own tribe, and all the elite men on the grassland were wiped out.

In addition, more than 30 princes of the Han army from Hebei, Shanxi and other places, including Liu Heima, Dong Jun, Guo Dehai, etc., as well as Khitan princes Xiao Chongxi, Ta Wei'er, Shi Mochala and other troops were mobilized to dispatch two large armies in total.

150,000, making a huge noise and advancing towards Kaifeng.

Although there are hundreds of thousands of Jurchens in Kaifeng City, there are not many real elites, so there is no need to mobilize such troops.

This time Wokuotai almost overran the country, but his adviser Yang Weizhong believed that this battle would not only destroy the Jin Dynasty, but also compete with the Southern Song Dynasty for the Central Plains.

If we were only dealing with the Jin Kingdom, we wouldn't need so many soldiers and horses.

Wokuotai mobilized so many soldiers and horses not mainly to deal with the Jin Kingdom, but to support the Jin Kingdom's Southern Song Dynasty behind the scenes.

After the Battle of Sanfeng Mountain, all the elites of the Jin Kingdom were lost. Mongolia could have easily destroyed the Jin Kingdom, but who knew that Zhao Tai persuaded the Southern Song Dynasty to support the Jin Kingdom and gave the Jin Kingdom a lot of aid.

This made the Jin Kingdom, which was originally weak, actually been given a life by the Southern Song Dynasty again.

For more than a year, the Jin Kingdom not only withstood the Mongolian attack, but also won a great victory in Xuzhou, killing Wo Kuotai's son Kuo Duan and annihilating more than 40,000 Mongolian troops.

This made Wo Kuotai very angry, and he resented the Southern Song Dynasty for supporting the Jin Kingdom and bleeding Mongolia behind his back.

After Wokuotai learned that the Southern Song Dynasty sent money and food to Kaifeng through Zhao Tai and wanted to use the Jin Kingdom to consume Mongolia, he called his subordinates to discuss it.

Yang Weizhong, the adopted Han Chinese son adopted by Wo Kuotai, believed that it was very likely that the Southern Song Dynasty would suddenly send troops when the Mongolian army was unable to attack Kaifeng and the army was exhausted, so Wo Kuotai brought enough troops.

In mid-September, the men and horses mobilized by Wokuotai gradually arrived on the north bank of the Yellow River. The Khitan black army led by Shi Mochala, the forward of the Mongolian army, first crossed the river from Yanjin and entered the northern suburbs of Kaifeng.

At the end of last year, after the Mongolian army broke through the Guanhe defense line, the Jin Dynasty court began to strengthen Kaifeng's city defense.

The Khitan black army had extremely strong combat effectiveness, not inferior to that of the Mongols themselves. They followed the Mongols to conquer cities and territories, and had seen many large cities. They could see the height of the Bianjing city wall and the width of the moat, but they were still shocked by the behemoth in front of them.

The Khitan black army circled the city and met up with Subotai in the southern suburbs, completely cutting off the channels for Jin Kingdom towns to transport supplies and reinforcements to Kaifeng.

After cutting off Kaifeng's channel for support from external activities, hundreds of thousands of Jurchens were trapped in Kaifeng, and they would only be left with nothing. The Mongolian army had basically sealed the victory.

It was at the end of September and the beginning of October that Wokuotai, who was very confident, allowed the Mongolian troops on the north bank to cross the river one after another, and people from all walks of life surrounded Kaifeng.

At this time, outside Kaifeng City, Wo Kuotai, wearing a pointed felt hat, rode a war horse, carried a scimitar, and led nearly a thousand cavalry to the foot of Kaifeng City, overlooking Kaifeng City and peering at the city defense.

This is the third time that Wo Kuotai has come to Kaifeng. A wise man can only do three things. Wo Kuotai summed up the previous lessons and decided to win Kaifeng this time.
Chapter completed!