Zhang Jiashi knows one sentence, and that is that it is unlikely that a person will fall twice in a row in one place. (Family)

But this sentence is not inevitable, because sometimes, a person will remember to eat or not to eat for some reason.

For the Song Dynasty, it was also common in this category.

Because in some respects, there are examples of the "mistake" of Lianjin to destroy Liao, and Lianmeng's destruction of Jin should have been an idea that the ruling class of the Southern Song Dynasty at that time was wary of.

It's a pity that in the end the idea was in many ways and was finally implemented.

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Judging from the historical records, the destruction of Jin by Lianmeng was not a clever plan thought of by the rulers of the Southern Song Dynasty, but a helpless choice that was forced out.

In the history of the Song Dynasty, it is not the first time that military alliances are used to eliminate enemy countries, and eventually allies evolve into stronger enemies, and the late Northern Song Dynasty formed an alliance with the Jurchens to destroy the Liao State is a typical case. There was no substantial interaction between the Song and the Mongols, but the Jin made a series of mistakes that eventually led to the Mongols becoming a new dominant power. The formation of this military alliance policy was for the Southern Song Dynasty. There were several reasons for this: the Southern Song Dynasty's sense of revenge, the Jin Dynasty's miscalculation of the situation and pushing its potential allies to the enemy, and the strong Mongol power that the Southern Song had no choice but to do.

Regarding the tripartite forces of the Song, Jin, and Mongolian forces, especially the attempts of the Mongols, the Southern Song Dynasty court was not unscrupulous. In the face of the Mongol march southward and the feud between the Jin Dynasty and the Jin Dynasty, the Southern Song Dynasty court had two factions, one supported the Jin Dynasty as a shield against the Mongols, and the other believed that the Jin Dynasty should be destroyed by this opportunity, so as to raise its spirits and try to resist the Mongol attempt to move south.

Qiao Xingjian, a minister of the Southern Song Dynasty, believed that "the strong Tartar is gradually rising, and its momentum is enough to kill gold." The enmity of the past is also, and now I am covered. The ancients had dead lips and cold teeth, and it was advisable to resist the Tartars" [2]. It is believed that under the situation of the rise of Mongol power, Jin has turned from an enemy in the past to a buffer state today, and as long as Jin can resist the attack of the Mongols, it is not impossible for the Southern Song Dynasty to continue to pay New Year's coins to Jin. The Mongols were very powerful and already had the ability to destroy the Jin Dynasty, and after the Mongols destroyed the Jin Dynasty, it was not a good thing for the Song Dynasty to be neighbors with the Song. If you do not break off diplomatic relations with the Jin Dynasty and continue to lose the New Year's coins, it will be beneficial for the Jin people to resist the Mongols, so that the Southern Song Dynasty will also have the opportunity to relieve time and organize forces to fight against the Mongols going south.

Qiao Xingjian's proposition is difficult to agree with when Song Jin's feud can finally be avenged. Zhen Dexiu, a famous minister of the Southern Song Dynasty, and others advocated that "the Jin people have a common enmity with me, and we should take the opportunity of the Jin Dynasty being attacked by the Mongols, stop paying New Year's coins to the Jin people, and send troops north to recover the lost territory to avenge the revenge of the monarch's father." "It is unreliable to want to use Jin as a shield, and we should take advantage of the policy of "captivity and self-reliance, use loyalty and sage, repair political affairs, bend the people's policies, and collect the hearts of the people." ”

The Song Dynasty should make itself strong as soon as possible, both to change its original humble position in front of the Jin Dynasty and to cope with the Mongol attack.

Although the Southern Song court disagreed, they all recognized that Mongolia was a state of tigers and wolves, and that they were not enough allies, or even more vicious enemies than the Jin dynasty. However, the views of the Southern Song Dynasty on the Mongol and Jin Dynasty issues. The attitude towards the Jin dynasty was different from that of other neighboring regimes. Due to the Jin soldiers going south and capturing the two emperors of Huiqin and returning to the north, the imperial court, including the royal family, was looted. The Song people hated the Jin people to the core, and although the Song Dynasty had been poor and weak for many years, the call to regain the lost land to avenge the world never stopped. The Southern Song Dynasty court believed that the royal family had been taken captive and its wealth had been robbed. The land was occupied, but fortunately Zhao Gou fled south, so that a wisp of blood was retained for the Zhao and Song dynasties, but it could only be in the southeast corner. The purpose of destroying gold, which has not been enough to obtain for many years, is about to become a reality, but it will continue to supply the New Year's coins in humiliation. Most people think that Qiao Xingjian's opinion is too calm and difficult to accept. Zhen Dexiu's views are desirable, and the shame of a hundred years of snow in one drum can naturally be approved by everyone.

Therefore, "Taixue Zhusheng Huang Nature, Huang Hong, Zhou Datong, Jia Yan, Xu Shilong, etc., with the main gate of Fuli, please cut (Qiao) to thank the world."

In the future, it will be necessary to pay a large amount of New Year's coins to the gold people for many years. In order to repay Jingkang's shame, he finally chose not to ally with the Jin Dynasty. At the beginning of the war and the imminent demise of the Jin Dynasty, even Zhen Dexiu, who advocated the destruction of Jin to avenge the revenge, also proposed that he should be cautious about how to deal with relations with Mongolia, "Today's Jurchen is the death of Liao in the past, and the Tatar of today is Xiangzhi Jurchen."

He believes that Lianmeng's destruction of Jin may repeat the mistake of Lianjin's destruction of Liao.

In the Southern Song Dynasty, although the voice of "destroying gold" was very loud, the strategy of "Lianmeng" never prevailed.

But in the end, the Southern Song Dynasty and Mongolia came together, the north and the south attacked, so that the Jin Dynasty went to extinction, mainly because the Jin Dynasty misjudged the situation, ignored the controversy of the Southern Song court, and did not expect that the Song Dynasty would also have factors conducive to the union of the Jin and Song Dynasty, let alone to fight for the Song people to unite against Mongolia, on the contrary, after learning that the Southern Song Dynasty was going to cut off the loss of the New Year's coin, it was very dissatisfied. Blindly moving south for turf pushed possible allies over the enemy's side. In order to solve the crisis in the Jin Dynasty and to punish the Southern Song Dynasty for refusing to pay the New Year's coin, a war against the Southern Song Dynasty was launched in 1217.

At that time, the Mongols marched southward, and the retreating Jin ruler Jin Xuanzong chose to do the following:

After the death of Jin Zhangzong in the first year of Jiading, King Wanyan Yongji of Weishao ascended the throne, and the Jin Kingdom began to gradually gain the upper hand. In the fourth year of Jiading, the main force of the Jin army blindly attacked to find the main force of the Mongolian army for a decisive battle, and as a result, it was defeated in two battles of Yehuling and Huihebao one after another, and the main field troops suffered heavy losses.

In order to avoid the advance of the Mongolian army, in July of the seventh year of Jiading, the Jin State moved southward and ceded the Lianghe and Shandong regions to the Mongols.

But in fact, at that time, the Mongols did not have a strong ability to attack the city, and the Jin State could still focus the remaining forces on a few most important cities, and it could also effectively prevent the Mongols from penetrating into the Jin Realm to copy the strategy, and after a period of adaptation, the Jin State still had the ability to achieve a solid defense. However, after giving up, not only was the back route of the northward escape cut off, but also hundreds of miles of strategic maneuver space was lost, which was not conducive to the survival of the Jin State.

But even so, if the Guanhe defense line is firmly managed, it is not a bad policy. After moving south, the Jin State increased its troops to defend the Guanhe, but the Mongol army was helpless against it. Seeing that no progress could be made, in the tenth year of Jiading, Genghis Khan had to leave Muhua Li to pass through the Han land, and he himself led the main force to the west to plunder the wealth.

Although the Jin State withstood the Mongol offensive, another serious consequence of the easy abandonment of Lianghe and Shandong at this time also began to appear: the grain produced by Henan alone could not support 300,000 troops, and the Jin State fell into a serious shortage of food.

In this case, the main battle faction of the Jin State thought of "compensating the Song".

The reason why I think so is because the main battle faction of the Jin country is blindly confident. When Jin Ting discussed the matter of moving the capital, Sun Dading, a straight scholar, said: "Our country's soldiers are inferior to Beicheng, and the more southern ones have more spare strength." But they ignore the obvious fact: the Jin State is no longer what it used to be, and it may be difficult to compete with the Song. At this point, the main battle faction of the Jin country did not have a clear understanding.

Comparatively speaking, the officials of the main peace faction are much more sober.

In the tenth year of Jiading, when the Jin court discussed the southern expedition, the right secretary Xu Gu pointed out that the Song people "knew that the northern army was strong, and they would regard me as a shield, although they jumped off the beam from time to time, they would not dare to go deeper", so the Jin State could rest assured that it would go all out to deal with the Mongols. Moreover, after the war against the Song Dynasty, he was also promoted to the political affairs of Pingzhang, and he also wrote a letter to persuade him to stop attacking the Song Dynasty, so as not to make the Jin State lose his strength and suffer from the enemy.

However, Jin Xuanzong Wanyan Xun and Prime Minister Shuhu Gao Qi and others were bent on the main battle, and tried their best to suppress the officials of the main peace faction. In the end, the Jin State launched a southern invasion on the grounds that "the year of the year will not arrive", and a total of more than 200,000 troops launched an attack on the Southern Song Dynasty in the three directions of Lianghuai, Jinghu, and Sichuan.

But this so-called reason is simply not valid. As early as the eighth year of Jiading (1215), the Jin State sent Wang Shi'an to infiltrate Huainan to carry out subversive activities, intending to seek Chuzhou. At this time, they already had the intention of invading the south, and even if the Southern Song Dynasty restored the New Year's currency two years later, they could find another reason to launch the southern invasion. In addition, the "Jin History" clearly records that the southern invasion of the Jin State was because of "greed for the reserves of Huainan".

As everyone knows, the Southern Song Dynasty also had its own difficulties. After the Jin Kingdom moved south, there were Shi Miyuan, Qiao Xingjian and others who supported the restoration of the year-old coins that had been interrupted for several years. But as soon as this remark came out, it was opposed by the ministers, thinking that this was "the end of the insult and the foundation of the coward", and some students denounced this as a traitorous act, and demanded that Qiao Xingjian and others be beheaded, and Shi Miyuan had no choice for a while.

If the Jin State can symbolically reduce some of the annual coins, Shi Miyuan can use this as a reason to forcibly pass the court meeting, but the Jin State did not give Shi Miyuan a chance to speak, and more seriously, the southern invasion of the Jin State broke the illusion that the Song Dynasty used Jin as a barrier, and the related controversy also stopped.

At this time, for the sake of their own survival, the Southern Song Dynasty not only resolutely resisted the invading Jin army, but also constantly looked for opportunities to go deep into Henan to copy the strategy to force the Jin army to retreat. In addition, in order to reduce the pressure on national defense, the Southern Song Dynasty also openly recruited powerful Shandong loyal and righteous troops, and at the same time joined forces with the Western Xia to attack Qin and Gong.

This war lasted for seven years. The Jin State not only failed to achieve the goal of "recompensating the Song Dynasty," but suffered heavy losses: in the direction of Sichuan, Wanyan Alin, a famous general who had an outstanding record in the war against Mongolia, was killed in Shukou; in the direction of Jinghu, the fierce general Huang slapped Aruta and was captured; and in the Lianghuai Theater, Shi Quan was even more "completely lost."

As the "History of Jin" said: "Xuanzong's southern expedition, the soldiers and horses were consumed and not one remained", "the elite of the country was almost lost", and "the military cavalry of the cardinal government was exhausted in the south". Although the Song court remained sober at this time and did not fall into the trap of the Jin State, the possibility of the Song-Jin union no longer existed.

In addition, when the Mongols attacked the Western Xia before, the Western Xia also asked the Jin State for help, but the Jin State took advantage of the fire to rob it, so that when it invaded the Southern Song Dynasty later, the Western Xia firmly stood on the side of the Southern Song Dynasty. It can be said that the monarchs and ministers of the Jin Kingdom personally buried the excellent situation of resisting Mongolia.

Just as the "History of Jin: Xuanzong Ji" said: "The Song Dynasty provoked in the south, and the Xia Dynasty in the west was insulted, and the troops were divided, but the merit did not make up for the troubles", and the situation of the Jin State became more and more passive.

Zhang Jiashi didn't know where the self-confidence of the main battle faction of the Jin State to attack the Southern Song Dynasty came from. Moreover, two-front warfare has been a taboo in national warfare since ancient times.

Moreover, in the Battle of Quarry Rock more than 50 years ago, the Jin State suffered the biggest defeat in the Song-Jin War, and the military superiority of the Jin State over the Southern Song Dynasty was no longer obvious at this time:

In the thirty-first year of Shaoxing, King Wanyan Liang of Jinhailing mobilized a large army and divided it into four routes, trying to destroy the Southern Song Dynasty in one fell swoop. Wang Liang of Jin Hailing personally led the main force, starting from Kaifeng Mansion in Nanjing, and first attacked the western region of Song Huai. The Song Lianghuai garrison retreated to the south bank of the Yangtze River in a hurry, and the Jin army drove straight in, entered the north bank of the Yangtze River, built warships, and prepared to cross the river from quarrying.

At that time, the royal power of the Song Jiankang Mansion was dismissed due to incompetence, and the 18,000 people in the department had just retreated to quarrying, and Li Xianzhong, the general who succeeded the royal power, had not yet arrived, and the army had no commander, morale was weak, and the people were panicked.

Yu Yunwen, a member of the Zhongshu House, was the military staff officer of the Jianghuai Army and the Horse Mansion at that time, and was ordered to urge Li Xianzhong to take up his post, and on behalf of the Song Dynasty, he went to the quarry to comfort the army. Seeing that the situation was critical in quarrying, he resolutely summoned Zhang Zhen, Shi Jun and other generals, announced the Song court's anti-Jin order, rewarded the army, and mobilized the soldiers to fight to the death. At the same time, the local militia and the masses were organized to provide support, so that the defense of the quarrying area suddenly improved. King Jin Hailing mistakenly believed that the Song army had been defeated and fled, and there were no soldiers to guard the south bank of the river, so he supervised the crossing of the river on November 8.

The Song army took advantage of the naval superiority to cut off the Jin army's ships in the river, and fired thunderbolts on the boats, filling the river with smoke and lime, making it impossible for the Jin army to resist. The Song army dispatched the car and ship, the boat was flying, and the treadmill militia in the ship was in high spirits, and the cry shook the sky. The Jin army was defeated and returned to the northern shore. The next day, the Song army forced the Yanglin ferry on the north bank of the Yangtze River and burned the enemy ships, and the king of Jin Hailing was forced to move to Yangzhou, forcing the Jin army to cross the river from Guazhou, which was killed by his subordinates, and the Jin army was defeated and retreated.

After the Song army won a great victory in quarrying, the main general Li Xianzhong arrived with his troops. Li Xianzhong learned about Yu Yunwen's command of the operation and admired it very much.

And the Jin soldiers have lost several battles, and they are all afraid of fighting. Some of the soldiers secretly discussed their escape. Under the condition that there was no way out, Wan Yanliang made a desperate bet and ordered the Jin army to cross the Yangtze River and invade the south within three days, otherwise Yijin would be executed.

The Song army on the other side of the river had just won the battle, and its morale was rising, and it was ready for battle, and the Jin army had no hope of forcibly crossing the battle, and Wan Yanliang had always used it harshly, which made the Jin army soldiers in a dilemma.

When they learned that Wan Yan Yong had proclaimed himself emperor in Liaoyang and deposed Wan Yan Liang as a concubine, they also thought about change.

In the early morning of the 27th, Wan Yan Yuanyi led the army to kill Wan Yan Liang.

At the beginning of December, the Jin army retreated, and the Song army took the opportunity to recover the Lianghuai region. After that, in order to stabilize the interior, Jin Shizong sent people to the Southern Song Dynasty to negotiate peace, and the Song-Jin War was temporarily stopped.

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