In fact, the situation in the Great Song Dynasty is very good now. Although there was a rebellion in Anxi Road, it was quickly pacified by Xin Qiji and Bi Zaiyu, and did not cause major changes, so it did not shake the foundation of the Great Song Dynasty's rule in Anxi Road. On the contrary, due to the timely response of the Song army and the swift action to quell the rebellion, it also caused a huge deterrent effect on some party nobles with different aspirations, making them feel uneasy and dare not act rashly. On the contrary, the rule of the Great Song Dynasty in the Anxi region was more solid.

At this time, the Mongols launched a scratchy attack in the north of the Jin State, forcing the Jin State to fight on two fronts, exhausted. Therefore, in this case, it was indeed a good time for the Song army to attack. However, the plan of sending troops to Juti could only be decided after Yang Yan returned to Jiankang and discussed with the courtiers. In fact, Zhao Chen and several ruling ministers are also aware of this, but they don't know much about the situation on the front line, and they have to wait for Yang Yan to return to Jiankang and explain in detail.

After Yang Yan arrived in Jiankang, Zhao Chen immediately recruited him into the palace and discussed the issue of sending troops with the five ruling ministers.

Yang Yan first briefed Zhao Chen and the ruling ministers on the situation on the Jianghuai front. When Wanyan Changzhi returned to Zhongdu, although the garrison force in the southern border of the Jin State was increased, the total number of Jin troops reached about 240,000, which was still at a disadvantage compared with the 320,000 troops deployed by the Great Song Dynasty on the border.

From the Central Plains and Shandong to the first line, the Jin army had only 150,000 horses, and the Great Song Dynasty had six imperial garrisons of Xiangyang Mansion, Ande Mansion, Gwangju, Haozhou, Xuyi Army, and Chuzhou, with a total of 160,000 horses, although the strength of the two sides was roughly equal. However, Jiankang, the capital of the Great Song Dynasty, is very close to the Jianghuai line, and there is still a waterway of the Yangtze River to use, and there is no worries, so a large number of people can be sent to the border in a short time. The central capital of the Jin State is far away from the Jianghuai line, and at the same time, there is a Mongolian army to contain it, and it is difficult to reinforce in the short term.

In addition, on the Shandong front, the Song army's water superiority was very obvious, and the combat range could cover the entire coastal area of the Shandong Peninsula, and it could also contain a large number of defensive forces of the Jin State. It can be said that the current situation is very favorable to the Great Song Dynasty. The only thing that is difficult to confirm is the current financial situation of the Great Song Dynasty and the extent to which it can support the Northern Expedition. It also determines the scale of this dispatch.

After listening to Yang Yan's introduction, Zhao Chen and several ruling ministers were also very excited, after the spring tax came up, the current treasury of the Great Song Dynasty had some foundation. Moreover, it is now the end of May, and in more than two months, the autumn tax will also be collected, and if some other expenditures are reduced, it is expected that the money in the treasury will reach about 10 million yuan, and with the money in the inner treasury, at least 20 million yuan will be used for military expenditures.

After Yang Yan found out, he was also very happy, so Zhao Chen immediately decided to formulate a plan to send troops and prepare materials, and it would take at least two months, and at that time, the autumn tax would also begin to be collected, and with this money, it would be enough to supply a medium-sized war.

Zhao Chen immediately ordered, first of all, let the Privy Council immediately come up with a comprehensive battle plan. Secondly, the first hit of the book immediately began to mobilize supplies and prepare for the war. Then the dispersion of the dynasty was announced.

The next day, Wang Yan and Yang Yan immediately recruited three commanders of the forbidden army to discuss the plan of sending troops together, and after more than ten days of repeated deliberations and discussions, they finally came up with a complete battle plan:

In this operation, the main battlefield was Jinghu North Road and Huainan East and West Road, and the six imperial garrisons of Xiangyangfu, Andeokfu, Gwangju, Haozhou, Xuyi Army, and Chuzhou would all be dispatched. The east and west roads of Lizhou were auxiliary battlefields, and the four imperial garrisons of Xingzhou, Chengzhou, Xingyuanfu and Jinzhou were partially dispatched, and then 50,000 to 60,000 horses were drawn from the Sanya forbidden army in Jiankang, with a total of about 250,000 troops, which were divided into two ways to attack. In addition, 30,000 to 40,000 naval troops were dispatched as auxiliary forces, and the overall strength was close to 300,000.

The specific troop arrangements were: the Eastern Route Army was headed by Cao Xun as the main general, gathering the three imperial garrisons of Haozhou, Xuyi and Chuzhou, and the naval army led by Li Gongzuo as the auxiliary rib. The Western Route Army, with Gao Zhen as the main general, gathered the three imperial garrisons of Xiangyangfu, Andeokfu and Gwangju, and the two imperial garrisons of Xingyuanfu and Jinzhou on the East Road of Yonglizhou as a supporting force. Yang Yan commanded the men and horses of the forbidden army, responded in the center, and commanded the overall situation. At the same time, the two imperial garrisons of Xingzhou and Chengzhou on the Lizhou West Road also launched an attack on the Guanzhong area to contain the strength of the Jin army.

The operational objectives were: the western route took Dengzhou as the offensive target and strived to capture Songzhou and Ruzhou, while the eastern route aimed at Suzhou, Xuzhou and the surrounding areas, severely damaged the strength of the Jin army stationed in the Central Plains, and realized the clamping trend of forming a two-way pincer attack on Kaifeng, gradually isolating the Kaifeng area, and further containing the Shandong and Guanzhong regions, laying a good foundation for the Song army to carry out the next step of the Northern Expedition to the Central Plains. After the strategic goal of this step is achieved, the next step of the strategy will be decided according to the situation of the club.

The combat will begin at the end of August and the beginning of September and end in November. In addition, during the entire war, it was planned to use 300,000 civilian soldiers.

Zhao Chen and several other ruling ministers carefully reviewed this battle plan, and after some discussion, they all agreed that it was completely feasible and was unanimously approved. So the entire Great Song Dynasty began to prepare intensively.

And at this moment, a surprising news came, the Mongol army withdrew.

※※Support original ※"Song Xiang" is in ※Support genuine※※

Song and Mongolia were allies against Jin, so both sides would inform each other of their military action plans in order to get the cooperation and support of the other side.

Therefore, before the last Song army attacked, the Mongols were also notified in advance. And when Temujin learned that the Song army had launched an attack on the Jin Kingdom, he was also very happy, because he had been waiting for such an opportunity. So he immediately ordered to rectify the Mongol army and attack, divide the troops into two routes, and attack Huanzhou and Linhuangfu.

At this time, the Mongols digested and absorbed all the fruits they had plundered from the Western Xia and Jin kingdoms in the past, and their strength was further strengthened. The total number of troops reached about 150,000. Of these, 100,000 were Mongol warriors, still in cavalry formations. The other 50,000 soldiers were infantry made up of captured Tanguts, Jin, and some Mongols. At the same time, a large number of equipment used by infantry troops were also manufactured. Temujin's personal guard, the Cowardly Army, was also expanded to 12,000 men, and was still divided into four teams, led by Muhua Pulp, Borshu, Chilaowen, and Borhu.

At the same time, the city built by Mongolia on the side of the Bukhan Mountain is also basically completed, the first city of the Mongols can accommodate a population of 200,000, and it was built so quickly, in fact, thanks to the traditional habits that the Mongols have not changed for a while, most of the Mongolians living in the city still live in the yurts, and there are not many real houses, including Temujin's palace tents, which are basically based on tents. Strictly speaking, this is more like a steppe tribe surrounded by walls.

In this sortie, Temujin dispatched an army of 120,000, including 70,000 Mongolian cavalry and all 50,000 infantry troops, leaving only those who were strangled, Yelu Chucai, Shen Bai, Zaba'er Huozhi, Tata Tonga and others left behind, and the other major generals all went to battle with the army, which can be regarded as an unprecedented scale. The main purpose of Tie Shuzhen was to test the combat effectiveness of the Mongol infantry army. However, although it was called infantry, each soldier was also able to be equipped with a war horse, and only when he arrived on the battlefield did he dismount to fight, this luxury was enough to make both Song and Jin look sideways.

Although the Jin State had repaired the boundary trenches in the north and also arranged a strong garrison, the border in the north of the Jin State was too long, and the forces were very scattered. Moreover, this time the Mongol army was too strong, and at the same time, there were infantry troops participating in the battle, so it was difficult for the Jin army to hold it.

The Mongol infantry army was trained by Yelu Ahai and Yelu Bald Flower, and although the quality was not as good as the infantry of Song Jin, it was a very useful supplement to the Mongol army.

At the beginning of the war, the Mongol infantry, holding shields, pushing carts full of sand, gravel and dirt, braved the rain of arrows of the Jin army, advanced to the edge of the boundary trench, dumped sand and gravel and soil into the boundary trench, and soon filled in many places. The Mongol cavalry then launched a fierce attack on the defenders of the boundary trenches, treading on the road paved with the lives of the infantry.

The infantry carried a wooden ladder and launched an attack on the boundary trench fort. Although the siege ability of the Mongol infantry was far from being comparable to that of the Song army, the border forts were small cities that could only accommodate more than a thousand people, and the walls were not tall, which was a rare opportunity for the Mongol infantry to practice.

As a result, after several days of fierce fighting, the Mongol army finally succeeded in breaking through the barriers of multiple boundary trenches and conquering more than a dozen border forts. Entered the hinterland of the Jin Kingdom and plundered the border of the Jin Kingdom. And defeated the reinforcements of the Jin State in Shuoping, Changtai and other places, and Yang Woyan and Sushi Leshning, who were guarding the northern border, could not resist the attack of the Mongol army, so they had to retreat to Huanzhou and Linhuang Fuzhong respectively, and sent an urgent warning to Zhongdu. And the Mongol army surrounded Gyeongju and launched a siege battle.

At this time, Wanyan Changzhi returned to Zhongdu from Nanjing, and when he learned that the north was in a hurry, he did not dare to be careless, so he immediately ordered to prepare men and horses, mobilize materials, and planned to personally lead the army to meet the Mongol army.

At this moment, Temujin suddenly received a message from those who stayed behind that Zahe dared not collude with the barbarian prince Qu Qu Lu, launched a rebellion, and was attacking the Mongol camp.

Zahekang is not the half-brother of Wang Han, the original Great Khan of the Kereh Tribe, and has always appeared in people's images with a gentle and low-key appearance, which is in stark contrast to Wang Han's greed and insidiousness. Before the Battle of the Red Willow Forest, it was Zahe who dared not to report to Temujin that Temujin escaped, and after Temujin unified the grassland, Zahe dared to marry his two daughters, Yiba Beji and Sha'er Hehetani Beji, to Temujin and his young son Tulei.

And Temujin also gave Zahekang no special treatment, his people were not scattered and regrouped like other tribes, and they were still led by Zaheda, and a place with abundant water and grass was divided in the Black Forest as a garrison for Zaheda.

In fact, the depth of his scheming is not the same as Wang Han, he knows that he is jealous of Wang Han, so he has always behaved very low-key in the Kereh Department, and has been secretly looking for strength to compete with Wang Han. Therefore, when Temujin and Wang Han were competing for hegemony in the grassland, Zahe dared to stand on Temujin's side and assist Temujin in defeating Wang Han, hoping to replace Wang Han with the help of Temujin's power. However, Temujin did not get his wish, although he gave Zahedang a very high reward, but completely merged the Kereh tribe into the Mongolian department, which completely disappointed Zaheda's dream, which naturally made Zahedang very dissatisfied.

Later, Temujin handed over his daughter Yibahe Beji to the veteran master, although this was a common thing in the grassland, but Zahedang thought that this was a signal that Temujin was planning to attack him, so he actively prepared in secret, intending to be betrayed by Temujin. But now there is only one tribe left in the entire steppe, and relying on his own strength alone, it is not enough to compete with the truth of Tiemu. So Zahe dared to start to cultivate his glory again, looking for new allies.

From some merchants in the Western Regions, he dared not know that after Naiman was defeated by the Mongol army, Tayang Khan died, Dun Ke Guer Besi threw himself into the arms of Temujin, only the son of Tayang Khan, the prince Qu Chulu fled to Hara Khitan, and was taken in by Juer Khan Zhiluji of Hara Khitan, and later Zhilu Ji saw that Qu Qu was quite brave and good at fighting, and he loved him very much, so he recruited him as a concubine and married his daughter to Qu Qu Lu.

Zha He dared not immediately send someone to secretly infiltrate Hara Khitan, contact Qu Qu Lu, and fight against Temujin together.

Qu Zhulu originally wanted to use the power of the Hara Khitan to fight against the Mongols, and after marrying the daughter of Zhiluji, on the one hand, he recruited the remnants of the Naiban to expand his power, and on the other hand, he curried favor with Zhiluji, and installed his own cronies in the Hara Khitan Dynasty, gradually mastered the power of the Hara Khitan court, and began to accumulate and reorganize the army to prepare to recapture the Naiban from the Mongols. In this case, Qu Qu Lu and Zha He dared to hit it off and reached an agreement.

And Temujin had been planning to attack the Jin Kingdom during this time, and Zahedang had also hidden it very well, so he didn't notice it. This time, the Mongols dispatched an unprecedented army to attack the Jin State, and the interior was very empty, and Zha He dared not immediately contact Qu Zhulu, and the two immediately raised troops together to confront the Mongols. After Temujin heard about it, he naturally did not dare to continue to attack the Jin State, and immediately returned to Mongolia.

※※Support original ※"Song Xiang" is in ※Support genuine※※

After Yang Yan learned of the Mongolian rebellion, he couldn't help but sigh, this is really not as good as heaven. Without the Mongol grip in the north, the Great Song had to re-examine the current situation and then make the right course of action.