Why did Sui and Tang Dynasties expedition to Koguryo? What are the grievances between the two countries?

Yang Di once recruited Goguryeo three times in two years, and personally went out three times, which shows his importance. However, Yang Di's first expedition to the East eventually failed due to strategic mistakes. The second time, because Yang Xuangan defected, he quit; I didn't achieve much for the third time. In the Tang Dynasty, both Emperor Taizong and Tang Gaozong made expeditions to Goguryeo, and finally succeeded in destroying Goguryeo and Baekje. Why did Sui and Tang Dynasties spare no effort to eliminate Koguryo? What exactly is the feud between the two countries? Let's have a look.

Koguryo was a regime in the northeast of China and the Korean Peninsula from 1 century BC to the 7th century AD. Since the birth of Koguryo, the Central Plains Dynasty has been attacking Koguryo on a large scale. Starting from Emperor Wendi of Sui Dynasty, four emperors, Yang Di, Emperor Taizong and Tang Gaozong, led troops to attack Koguryo. Then, why should we spare no effort to eliminate Goguryeo in the Sui and Tang Dynasties?

Koguryo is an ancient country with a long history in Manchuria, which lasted 705 years from its founding in 37 BC to its demise in 668 AD. However, the centralized and unified feudal dynasty in the Central Plains was generally good after more than 200 years. It can be said that Koguryo has a long history and a profound national foundation.

Historically, North Korea did not regard the Bohai Sea as its own national history in the early days, but Koguryo has always been regarded as its own national history and was named the Three Kingdoms Period of Korea. China talked about world history in his early days, and he will also talk about the Three Kingdoms period when he talks about Korean history. But in modern times, for fear of South Korea's claim to Manchuria, it began to say that Koguryo had nothing to do with North Korea, and Koguryo was the local regime of the Central Plains Dynasty.

If the surrounding areas are regarded as vassal States from the beginning of the Central Plains Dynasty, then the so-called vassal States can be said to be local governments. However, these local governments not only did not listen to the Central Plains Dynasty at all, but also often harassed the Central Plains Dynasty.

Why did Sui and Tang Dynasties fight Koguryo even when there was no way out? Moreover, it was because the Sui Dynasty fought so hard that it finally fought so hard for itself. This Tang dynasty still lacks memory, and then it has to fight?

Although Koguryo was mainly established in Manchuria, it did not enter the Central Plains on a large scale, unlike other northern nationalities that started from it. At most, it only harassed the border of the Central Plains dynasty militarily. Since Koguryo is now said to be the local government of the Central Plains Dynasty, how can it leave the border? Maybe it should be an internal boundary? Through several direct conflicts with the Central Plains dynasty, it also shows that Koguryo's military strength is not strong enough, and it is not as strong as other ethnic groups in the north.

Before the Sui and Tang Dynasties, the Central Plains dynasty fought with Goguryeo several times. When Cao Wei was first mentioned, the Central Plains dynasty had some strongholds in Liaodong, and there was also a warlord regime of Sun for some time. Goguryeo assisted Cao Wei in eliminating the regime of Gongsun. Later, Cao Wei was busy with southern operations, and there were no troops here. So Goguryeo invaded Cao Wei's land in Liaodong. After Cao Wei finished the Southern War, he let go and sent his troops to destroy Koguryo. More than a dozen, I knew it was still difficult to fight. I fought a lot of hard battles, and even the general of Wei died in Goguryeo's hands. However, Koguryo's military strength was still weaker than that of Wei, and finally Wei captured the capital of Koguryo.

However, according to the analysis of the article I wrote before, the Central Plains Dynasty did not have the conditions to occupy Manchuria and Mongolia for a long time, and the military supplies could not take root, and it was impossible to station troops and send personnel to govern for a long time. The bigger reason is that before the population surge in Qing Dynasty, no Central Plains people wanted to immigrate there. So Wei finally quit. In addition, Murong Xianbei also fought with Koguryo many times and captured the capital of Koguryo.

If Guo Wei and Murong Xianbei are included in the Central Plains Dynasty, this is the Koguryo that was played before Sui and Tang Dynasties.

Guo Wei, Murong Xianbei and Sui and Tang Dynasties all have a * * * character, that is, the rulers all have Xianbei descent. But at that time, Cao Cao, Manchu did not enter the customs, and it was not a climate. I think Cao Cao may be a descendant of Xianbei people. Although Xianbei entered the Central Plains late, it already had a certain strength at that time. Some of them may have moved to the Central Plains, and the Xianbei people who moved here may include Cao Cao's ancestors. Finally, because a large part of Xianbei people were integrated into Manchu, Cao Cao was considered Manchu. Needless to say, Murong Xianbei is 100% authentic Xianbei.

There is no dispute that the maternal lineage of the Sui and Tang royal families came from Xianbei. It is controversial whether their paternal line comes from Xianbei. According to research, Li Shimin's ancestor was Xianbei Xiao Ye. And their ancestral experience is basically the same as that of Xianbei people. There are many textual research articles now, and it is easy to find them online. You can check it out if you are interested.

The four dynasties that fought Koguryo had a * * * gender of Xianbei descent of the royal family, so they had feelings for the land of Manchuria, which may be one of the main reasons why they fought Koguryo.

Other reasons, basically superficial, can also be said to be the direct conflict between the two sides, that is, Goguryeo often harassed the border areas of the Central Plains Dynasty while trying to continue to expand its territory. On the other hand, these central plains dynasties were relatively stable at that time and had the central financial resources to support the war. However, this is very difficult and expensive. Because of the Koguryo War, the Sui Dynasty not only suffered a military defeat, but also caused a domestic financial shortage and triggered a peasant uprising. Li Shimin's war against Koguryo was basically the same. I didn't get anything cheap, and there were many casualties.

According to the research and speculation of some experts, even Li Shimin may be injured, so he had to retreat in a hurry. When I finally arrived in Tang Gaozong, Koguryo had been completely destroyed by Koguryo's civil strife. But the ending was not good for the Central Plains Dynasty, because the Central Plains Dynasty failed to control the original Koguryo area and finally quit. The real beneficiary is Silla on the Korean peninsula, and most of Koguryo's land on the Korean peninsula is occupied by Silla.

One: Goguryeo is restless and always wants to make trouble. Koguryo has been fighting against the Great Sui Dynasty since the establishment of the Sui regime, doing everything possible to disturb the frontier. When Yang Guang replaced the Northern Zhou Dynasty to establish the Sui Dynasty, Goguryeo always supported the remnants of the Northern Zhou Dynasty to fight against the Sui Dynasty, and also joined forces with Turks and Qidan to fight a civil war in the Central Plains, which made Da Sui very angry. Later, when the Sui regime gradually stabilized, Goguryeo saw that the momentum was wrong, pretending to be a vassal of Sui, but at the same time paying taxes and tribute to another regime in the Central Plains, without even doing enough superficial work.

As the saying goes, one mountain can't accommodate two tigers, and the relationship between Sui and Chen is naturally in hot water. How can Goguryeo be allowed to swing at both ends like this? In addition, in the process of Sui and confrontation, Koguryo also joined forces with Turks, Khitan and attacked Sui. Later, after the Sui Dynasty unified the Central Plains, it constantly provoked wars. What Emperor Wendi of Sui Dynasty said in the campaign against Goguryeo was: Since Goguryeo surrendered to me in the Sui Dynasty, and secretly joined forces with Turks and Qidan to keep me at the border, it is really worthwhile to be a minister. Sending troops to crusade now is for the long-term plan, so we can't ignore it. Now I must take it down to ensure world peace. It can be seen that Sui was also very afraid of the restless Goguryeo, fearing that it would control the forces such as the Turkic Qidan and let it develop, which would bring disaster in the future.

In fact, the replacement of Sui by the later Tang Dynasty was more or less fueled by Goguryeo. After the establishment of the Tang regime, politics and economy were unprecedentedly prosperous. The three countries of North Korea have their own plans, among which Silla investment is a part of the Tang Dynasty. At this time, Goguryeo and Baekje are playing Silla together, which is an obvious provocation to the Tang Dynasty. Ask which authority can tolerate this behavior. And during this period, I turned a deaf ear to the warnings of Emperor Taizong and Li Shiming. This is simply a constant temptation to die. While trying, I am also happy and telling.

Two: Koguryo does have strength. It is quite different from the economic model of nomadic regimes such as Turkic Khitan. Agricultural development is stable, the system is relatively perfect, the population is large, the territory is vast, and the national treasury is relatively sufficient. Nomadic regimes will be affected by natural and man-made disasters, but it will be different if there is stable agricultural development. The surplus of agricultural state-owned enterprises in Daxing will be a great threat to any authorities in the long run. If it is really willing to surrender, it will be just, but it will be restless.

If it is allowed to grow and develop, then Korea will be unified. It is a great threat to the Central Plains, and it may subvert the political affairs of the Central Plains. It is not unknown that this kind of example was replaced by gold in history. Of course, this is another story. Besides, its political power is stable and its army has enough fighting capacity. In the period of mutual restraint with North Korea, there is still room to fight against Sui and Tang Dynasties. I'm afraid the Sui and Tang Dynasties have long regarded it as a different kind. How can we tolerate its growing strength?

Third, the territorial issue, which is also an important issue today. In fact, this is also a question about the dignity of a big country, and so is Goguryeo. Liaodong region has long been regarded as a part of the territory of the Central Plains, and it can be used as a enfeoffment, allowing them to develop on their own, provided that they must admit that they are a part of the Central Plains and give an honest account. Goguryeo not only failed to submit, but also openly rebelled against the Sui and Tang Dynasties and disturbed its borders. This is obviously touching the tiger's ass again and again. Moreover, since ancient times, when it comes to territorial issues, the attitude has always been to fight for every inch of land. There are also many historical explorations in the East and West, not to mention areas that have long been included in the territory. Of course, I want to go back to my own place, and I can take it whenever I want.

In fact, another reason is Jiangnan. Jiangnan is the richest place in the Central Plains, known as the granary of the world. Kings of past dynasties all attached importance to Jiangnan, and Goguryeo had long been eyeing Jiangnan. How can such a matter concerning the people's livelihood in the world be left unchecked? Once Jiangnan is disturbed by Koguryo, the world will be in chaos. By then, the whole country will have a problem eating. At that time, the suffering of the people will inevitably lead to the instability of state affairs. If we had sent troops to fight Koguryo, we would have lost! Why? Because the people and ministers in the DPRK were worried at that time, how could they have the fighting spirit to go to the battlefield? Besides, if the army really didn't have enough food and grass at that time, there would be nothing to do with Koguryo. Although Koguryo has no big moves, how can his sweet baby be watched by others, not to mention that this person is an emperor.