Because Zhao Yu knew in his previous life that after the invasion of the alien race, the resistance in the first few years was the most intense, but under the brutal suppression and pacification of the alien race, this resistance psychology would continue to fade with the extension of time, until he accepted the alien rule with peace of mind, forgot his homeland, and even became an accomplice of the alien race. Naturally, he was also regarded as a traitor and an enemy by the old master, and this phenomenon was extremely serious in the history of the Song Dynasty.

During the Northern Song Dynasty, due to Shi Jingjiao's betrayal of the sixteen states of Yanyun, several northern expeditions failed in the early Song Dynasty, resulting in the northern border being maintained north of the old Yellow River, and did not completely occupy the old land of the Han people in history, nor did he include the entire Central Plains region under his rule, which caused the ethnic split. But things are not static, when the Han people in the sixteen states of Youyun became vassals of the Liao Dynasty, not only in terms of character, but also in terms of life and customs, they also began to undergo a comprehensive "Huhua", which gradually led to a change in the attitude of the Song people towards them.

In the eyes of the Song people, those who lived in the "enemy territory", wore "Hu clothes", used "Hu etiquette", and practiced "Hu customs" were completely different to themselves. They referred to the Han Chinese who were under the rule of the Khitan and later Jurchens as 'Beiren'. This is a discriminatory title, and they are regarded as potential enemies, and those old Liao guards are all Han Chinese, but in the pen of the Song people, they have all become "captives". This is still the case for knowledgeable scholars and doctors, not to mention the lower-class military and civilians.

Even so, when it came to the actual practice, the Song court presented a different face in front of the Youyun Han people. Not only did he not find a way to eliminate the Song people's rejection of the Han people in the Liao Dynasty and reduce the doubts in the hearts of the "Han people", but on the contrary, he reflected an attitude of distrust everywhere, and did many things that did not regard the Youyun Han people as people at all, but bullied and betrayed them.

The resettlement places of the converts, whether they were surrendered or voluntarily returned, were generally sent to the interior for scattered resettlement, with the aim of preventing them from communicating with the 'old master' inside and outside. However, compared with the military situation, the needs of war are more important, and the emphasis on "mixing with the Han army" and "living in a wrong place with the army" means that there is a mistake in the establishment. Obviously, the small-scale centralized formation of the army has the consideration of being convenient for control, so the subordinate personnel should be subordinate to the small-scale formation of the subordinate army, so as to give full play to their superiority in cavalry and archery during combat, and the use and control complement each other.

Not only that, after the Han people in the sixteen states of Youyun entered the Song Dynasty, the Northern Song court did not take any effective measures to avoid the Song people's discrimination and exclusion of them. or trapped in food and clothing, those who are under the gate, as for the unveiling of the thoroughfares, they are called their names, and the old officials are beggars, although the ruling does not ask. ”

And "the officials of Yanyun and Yunlu are scattered in China, and the people of their gathering are in the hinterland, and the people of China are suspicious day and night, and the officials are no longer treated with courtesy, and the two sides are resentful, and they are noisy. This made the contradiction between the Han and Song people in Youyun increasingly acute, until it led to great changes during the Jin and Song Wars. It can be said that a series of stupid things done by the Northern Song court after entering Youyun made the Han people in the sixteen states of Youyun greatly disappointed with it, which not only included a temporary policy mistake, but also the result of the Song people's long-term prejudice against the Youyun Han people.

In the army, the exclusion of reformers is even more severe. On the contrary, after the Jin Dynasty started a war against the Song Dynasty, it took the correct decision under the guidance of Liu Yanzong and other Han people, "The Jin people have obtained Yan, then the salt law is still the same, and the military house industry and land are often victorious, and the former master is given to the Yan people." "Compared with the two, who will be attached to the heart of the Youyun Han people is already a matter of knowing at a glance.

After the southern crossing, the mutual distrust and discrimination caused by the division between the North and the South in history have become more and more serious, and some incidents have deepened the contradictions between the two. Distrust was a long-standing dominant attitude in the Southern Song court. Including Zhu Xi, they all directly regarded the reformers as the eunuchs of the Han Dynasty and the feudal towns of the Tang Dynasty, believing that these people were the root causes of social turmoil. As a result, many of the reformed civil servants were not given real posts, and they were scattered among the prefectures and counties.

The vacillating policy toward the "reformed people" also aroused the dissatisfaction of a large number of reformed people, and this dissatisfaction began to ferment in the Xiaozong Dynasty and became more and more serious later, and the Southern Song Dynasty army, especially among the most combat-effective troops on the front, due to the increasing proportion of reformed people year by year, the management of the army appeared hidden dangers. On the one hand, these northern armies were crowded out, and on the other hand, the Southern Song Dynasty regular army did not have a numerical advantage, which caused the internal management of the army to get out of control. This made the Southern Song Dynasty constantly lose the support of the people in the north, which not only completely ruined the possibility of the Southern Song Dynasty's northern settlement of the Central Plains, but also became an important reason for the demise of the Southern Song Dynasty......

As the saying goes: a tree has roots, and water has a source. Nothing happens for no reason, there must always be a reason, Zhao Hao, as a later generation, naturally has the opportunity to look back at history, you can find a clear development context, and it is not just disgust and distrust, but it is a great Song Dynasty above, under the locality, the southerners and northerners, the civil ministers and military generals continue to be a century-old political drama.

In Zhao Hao's view, the root cause of the contradiction between the north and the south is first a matter of money, then a matter of people, and finally a matter of power:

At the beginning of the establishment of the Song Dynasty, the north experienced a long period of war and economic depression; The south was less affected by the war, and Jiangnan was already a rich land, and even Yunnan, Guizhou, and Lingnan regions were gradually developed, forming a situation in which the south was strong and the north was weak economically. However, it was the northerners who established the Song regime, and politically the southerners were naturally at a disadvantage.

The ensuing outbreak of the old and new party struggles has faintly created a great divide between the north and the south. Most of the New Party were southerners, such as Wang Anshi, Zhang Dian, Lu Huiqing, and Zeng Bu; Representative figures of the old party such as Sima Guang, Cheng Hao, Cheng Yi, Liu Zhi, Han Qi, etc. And one of the reasons why Sima Guang criticized Wang Anshi's change of law was that the southerners could not be in power, and he once said lightly: "The Fujian people are cunning, the Chu people are easy, and now the two prime ministers are both Fujian people, and the two are Chu people who participate in politics, which will inevitably lead the people of the township party and the customs of the world, why be more honest!" In other words, in a sense, this is the openness of regional discrimination between the north and the south in the court!

In the Southern Song Dynasty, the contradiction between the southerners and the northerners became even more severe, not only did the great Confucian Zhu Xi look down on the northerners, but many southern scholars also criticized the northerners for being rude and stupid in their poems and essays. Open "History of the Song Dynasty", and look at "The Legend of the Traitorous Minister" almost all southerners, Zhao Yu thought it was very interesting at that time. Since the change of Jingkang in the Song Dynasty and the southern crossing, the Song Dynasty has long faced strong enemies such as the Jurchen Jin Dynasty and the Mengyuan Dynasty, and is facing the danger of losing the country at any time.

At the beginning of the southern crossing, because the army around Gaozong Zhao Gou was limited, and he faced the invasion of the Jin army in the south, he had to pay attention to appeasing and recruiting these reformers as a supplement to the grassroots army. Most of the northerners are warriors, battlefield generals, and they are determined to restore their homeland, so they are naturally the main battle; However, the southerners, who were born in the background of economic development and social prosperity, entered the government through the imperial examination, and mostly focused on stabilizing the political situation in the south of the Yangtze River, and had no chance of winning the war.

In Zhao Hao's view, it is precisely because of the differences in the considerations of the people of the north and the south that they have different positions and views, which derives different views on survival and development, reality and ideals, and peace and restoration. The cognitive differences are entangled with the regional issues between the North and the South, as well as the civil and military issues, which have had an impact on the political environment. The political environment and the relationship between the Song and Jin and the Song and Mongolia make the problem more complicated.

The Song Dynasty moved the capital to Lin'an, which was also more conducive to the scholars and doctors of Fujian Road, West Zhejiang Road, and East Zhejiang Road, so the situation of the southerners ruling the northerners and the main army gradually stabilized. In particular, under the national policy of emphasizing literature over military force, in a political environment in which the southern literati who were admitted to the imperial examination were dominant, for those who came from the north, it was natural to build an intellectual breakwater, and between the use of people, there would be differences between the north and the south between the inside and outside, and it would be easy to produce the phenomenon of political and ecological imbalance, form political disputes, and lay hidden dangers for their future melee.

For the survival and development of the small imperial court, and in order to compete for political interests, the issue of peace and war was not only a dispute of political opinions, but also a matter of personnel grievances and the so-called problems of the north and south, and economically the south was strong and the north was weak, politically the southerners controlled the political arena of the Southern Song Dynasty, and most of the northerners were displaced and most of them were military generals. Therefore, you can see that in the Northern Song Dynasty, there was a clear difference between the military and political positions of the northerners and the southerners, so the Southern Song Dynasty formed a political form in which the northerners were the main army and the southerners were in charge.

Since the founding of the Southern Song Dynasty, several major events, such as the death of Yue Fei, the rebellion of Miao Fu, Liu Zhengyan, Li Qiong and the killing of Qu Duan, and the death of Meng Heng's depression, although there are different reasons, but the regional complex between the north and the south seems to be quite related. Zhao Yu only looked at Yue Fei's background and experience, and knew that the appeasement of the northerners had touched the knot in the hearts of the southerners' ministers and emperors, and that the surrender and rebellion were often the harbingers of local plots, all of which involved the intricate contradictions between the southerners' generals, civil officials, and northerners' military generals without exception.

At the beginning of the southern crossing, the Song court was facing extinction at any time, and it can be said that it was the time to employ people. For the reformed people, in addition to distributing relief money and grain, distributing land, cultivating cattle, and seeds for resettlement, the Southern Song Dynasty included men in the army as a regular practice for the resettlement of reformed people. Zhao Hao's most admired Yue Jiajun, the reason why they can make the Jin army frightened, to a large extent, is inseparable from the continuous participation of the northern reformers and the response of the rear, the fierce generals Niu Gao and Dong Xian in their ranks are all reformed people, and even when the Song and Jin began to negotiate peace, Yue Fei still sent people to the north with wax pills and bounties to lure the heroes of the Central Plains.

However, it was precisely based on the suspicion of Yue Fei and other generals that the courtiers and Zhao Gou gradually strengthened their vigilance against the return of the northerners. Especially after the signing of the 'Shaoxing Peace Conference', in order to prevent the southern invasion of the Jin Dynasty, Gaozong strictly forbade the border generals to accept the northerners who came from crossing the Huai River while repatriating the newly converted people. He even directly issued a document warning Yue Fei and other generals not to recruit people who had returned from the north. However, whenever there was a tense situation of military confrontation between Song and Jin, they would again send border officials to recruit northerners to defect and reward them heavily.

In Zhao Hao's view, on the issue of dealing with reformed people, both the emperor and those southern civil servants in power are full of routines of unloading the mill and killing donkeys, and they have been stereotyped, so that they are fully revealed in ideology and behavior. After that, the Mongols went south to destroy the Jin, and the Central Plains fought in all directions, and for a time, many generals and civilians in the Jin Dynasty went south to enter the Song Dynasty and became the new reformers. In this group of people, many of them grew up to be great members of the Southern Song Dynasty and fierce generals of the army because of their outstanding military exploits.

Liu Cheng was subordinate to Meng Heng during the Jin Rebellion, and in the Battle of Xinyang, "the whole was the vanguard, the night column was brave and brave, crossed the trench and landed in the city, attacked and captured its defense", Meng Heng praised his "race and filial piety", and then moved to Tongchuan to pacify the envoy and know the affairs of Luzhou; Jiang Cai was plundered to Heshuo when he was young, and then fled back to the Southern Song Dynasty to "subordinate to the Huainan soldiers, in the name of good fighting", and would rather die than surrender in the battle against the Yuan army in the Huaixi region with the famous general Li Tingzhi.

There is also Zhang Shijie, who is well known to Zhao Yu and has worked with for many years, was originally in the army of the Yuan general Zhang Rou, and made many military exploits after he was afraid of crime and surrendered to the Song Dynasty. According to the script, when the Yuan army attacked near Lin'an, he should lead the army to the king of Qin, and he fought until he died in the battle of Yashan, which could have become one of the three heroes in the late Song Dynasty. But because he inserted a pole horizontally, he is still alive and well, but he is not thin on him, and he has been an official privy envoy for so many years, and he can be regarded as a very human minister.

In the initial confrontation between the Song and the Mongols, it was the reformers recruited from the north who greatly curbed the powerful Mongol iron cavalry, but Zhao Yu stood on the standpoint of historical justice, and during the fierce period of war, the Southern Song Dynasty's overall salary and treatment of the Northern Army were first-class, even better than the Southern Army. However, with the passage of time, it caused dissatisfaction among the officers and men of the southern army, and the southern army did not accept the good treatment of the northern army, but also wanted a piece of the pie.

It should be said that the problem came, Li Quan, the famous leader of the Shandong Red Jacket Army, and others once traveled between Jin and Mongolia because of the suspicion of the Southern Song Dynasty, causing serious damage to the defense of the Southern Song Dynasty and Huai, and even causing the Southern Song Dynasty, which was once in the upper hand, to defeat one after another, which can be described as a bloody lesson. Even more unlucky than Li Quan is Liu Quan. After Jia Nidao took control of the government, he implemented the "plan law", with the goal of using the pretext of rectifying corruption in the army to take the opportunity to crack down on those generals who had made outstanding contributions and did not respect Jia Nidao's authority.

In other words, Jia seems to be playing to eliminate the forces that disobey him and support his subordinates Li Tingzhi, Lu Wende, Lu Wenhuan and others. For this reason, he successively purged a number of senior generals of the Southern Song Dynasty who were disrespectful to him, and Liu Quan, who entered the Song Dynasty from Jin, repeatedly made military exploits in the war against the Mongolian army, and turned to the Song Dynasty for fear of causing trouble. Liu Quan, who was well versed in the defense of the Southern Song Dynasty, became the vanguard of the Mengyuan army to destroy the Song Dynasty, and Luzhou, where he was stationed, was originally an important town for the defense of the upper reaches of the Yangtze River in the Southern Song Dynasty. The grand strategy of forming a naval army and sweeping the Southern Song Dynasty actually determined the final direction of the decisive battle between Song and Mongolia.

Such a rectification of the northerners naturally weakened the strength of the defense of the Southern Song Dynasty, and soon after the country was opened, Xiangyang was lost, and Jiangnan was in danger! This controversy between the southerners and the northerners eventually overthrew the Song regime, and the cost was not insignificant......