After Wang Anshi's political reform, the Song Dynasty gradually moved towards political chaos. The new party and the old party attacked each other, and the new deal and the old government alternated. No one can tell who is right or wrong. But neither the courtiers nor the people grasped the crux of the problem.
Sometimes even the emperor's personal preferences have a great influence on the country's politics. Song Huizong loved art very much and didn't think about governing the country. In the end, the world collapsed in his hands, forcing the Han culture to stage the South Crossing again. Obviously, the Pian 'an regime south of the Yangtze River has only one breath left. Why can't the powerful Jin state destroy the Southern Song Dynasty?
A lot of land in the north is not fully digested;
Jin Guo is a new political power, and their social span is actually very large. To be precise, it was a direct transition from slave society to feudal society.
They lived a life of fishing and hunting in the northeast, belonging to the dependency of the Khitan people. However, in the later period of the development of Qidan and Northern Song Dynasty, corruption was inevitable, and the combat effectiveness of the two armies dropped greatly. However, the Khitans are nomadic people in the north after all. Thin camels are bigger than horses, and in terms of combat effectiveness, they are much stronger than soldiers in the Northern Song Dynasty.
At that time, the Song Dynasty signed a maritime alliance with the Jin people, pinning their dream of recovering Yanyun on the Jin people's attack on Liao countries, but the Jin people were ambitious. They found Song Jun's weakness in the battle, so after destroying the Khitan, they pointed the finger at their former allies.
From the comparison of land area, although the land in the north of Song Dynasty is not as vast as that of nomadic people, the value of land in Song Dynasty far exceeds that of minority land in terms of the degree and value of land use.
It was accidental that Jin people rose from Baishan Heishui area and defeated Liao country. At that time, the emperor of Liao was very fatuous, and several wrong decisions made the land of Liao decrease day by day. However, the number of gold people is small. If every place should be guarded by troops, then the strength of the Jin people must be insufficient. Therefore, Jin people can only cooperate with local interest groups to maintain their own rule, which indirectly reduces Jin people's control over the country.
After the Han people in the Song Dynasty crossed to the south, although the Jin people pursued it, they could never destroy the regime of the Southern Song Dynasty, so they wanted to force the Southern Song Dynasty to surrender by other means, so they supported some puppet dynasties in the north to confront the Southern Song Dynasty. On the one hand, it can weaken the strength of the Han people in the Southern Song Dynasty and the Central Plains, on the other hand, it can digest the land in the rear.
This is an important reason why Jin people have never been able to destroy the Southern Song Dynasty. If the Jin people had completely digested the land in the north, then the destruction of the Song Dynasty in the south would definitely be put on the agenda, just like Wan Yanliang's poem "Millions of troops in the West Lake immediately climbed the first peak in Wu Shan."