When Shu Han perished, the whole people were embarrassed, and they all accused Ah Dou Liu Chan, who could not be supported. What would happen if Liu Chan and Li Shimin were asked to change the script to cross? The Northern Expedition was successful in three years, the Central Plains were swept away within five years, the Western Regions were taken within ten years, and the grasslands were swept away within fifteen years?
After all, the brother is gone, the father is gone, the family is strong, the gods are marquis, and the sky is absolutely open and dominates the rivers and lakes! Is this set of cards really that easy to play? It's actually hard!
First, a competition in military strength
The family base of the Shu Han regime during the Three Kingdoms period was much thicker than when the Li family father and son started the army. But at the same time, the enemies faced by the Shu Han regime were much stronger than those of the Li family at the same time.
If we carefully look through the official history, we will find that during the Sui and Tang Dynasties, those enemies that Li Shimin defeated were basically not veterans of a hundred battles. Dou Jiande and Liu Heiman belonged to the peasant army from the bottom; Liu Wuzhou and Xue Ju belonged to the mid-ranking officers of the previous Sui Dynasty. The only exception is Wang Shichong, who is indeed the last fierce general who can fight a little at the end of the Sui Dynasty, but his level is only at the level of fierce generals at most.
In contrast, during the Three Kingdoms period, when Zhuge Liang was on the Northern Expedition, Cao Zhen and Sima Yi who fought against Cao Zhen were both people who had large-scale corps combat experience and had a lot of insight. Sima Yi had served under Cao Cao, and Cao Zhen participated in the Battle of Hanzhong directly under Cao Cao. On Wu Guo's side, there were also several top generals, at least Lu Xun, who burned the company's battalion, was still alive at that time. Therefore, whether it is the leading generals of the Wei State or the Wu State, they are not from the grass platform, and they have experience in commanding large-scale corps. This point is completely different from those heroes in the Shu Han and the late Sui dynasty. But there is no doubt that behind the relatively stable strength and relatively sufficient supplies, they can more calmly fight a war of attrition with the Shu Han. Even if Li Shimin is strong, he can only be helpless in the face of the situation that the other party cannot hold on and his own supply is insufficient.
And then, in terms of armament. In the Battle of Tiger Pass during the Sui and Tang Dynasties, Li Shimin was able to hold Tiger Pass with thousands of people and block the attack of Dou Jiande's army of more than 100,000 people. In addition to relying on the geographical advantage of Tiger Pass, it also relies on the equipment advantage of the soldiers under his command. In contrast, during the Three Kingdoms period, the Shu Han regime had almost no advantage over the Wei and Wu states in terms of weapons and equipment, and everyone was almost equal. Even the Wei and Wu kingdoms, because of their stronger national strength, often have a slight advantage in weapons and equipment. And these advantages can not be completely offset by Zhuge Liang making a Zhuge crossbow.
Second, the competition of political forces
No one is born a hero, and no one is born a bitch. The reason why Li Shimin became Li Shimin has a lot to do with the political system of the Sui and Tang dynasties. For example, Yang Jian's annihilation of Southern Chen, Yang Jian sat firmly on the Diaoyutai, and the son Yang Guang the King of Jin commanded the army. Tang destroyed the world the same, Li Yuan sat in the central government, and his son Li Shimin fought in the south and the north.
The political pattern of the Sui and Tang dynasties is unimaginable during the Three Kingdoms period, and you can hardly see such cases, such as Cao Cao sitting in Xuchang and letting Cao Pi clear Huanyu; For example, Liu Bei Yizhou, let Liu Chan chase the deer in the Central Plains, this picture is unimaginable. Since he could not get effective experience, Li Shimin crossed to Shu Han, and it was also destined to be a flower in the greenhouse.
Li Shimin possessed Liu Chan, and wanted to reverse the defeat, and the biggest chance was before Liu Bei's death. During this period, Li Shimin wanted to save Jingzhou as a child prodigy or plan to win the Battle of Yiling. When Liu Bei died, he quickly gave birth to another son, made a prince, and asked Prime Minister Zhuge to stay in the capital with a baby, so that Li Shimin would have the opportunity to wave at the front. Otherwise, no matter how outstanding the military talent is, it must be related by Zhuge Cheng at home, the Miao'er of the old Liu family!
The organizational structure of Wei Shu and Wu belongs to the powerful alliance, and there is not much difference between each other in organizational structure. The northern political centers were all under the control of the Wei state, and Li Shimin was trapped in Shudi, and it was even more difficult to build the Tiance Mansion on top of this mess. I can only squeeze the last drop of oil from Emperor Zhaolie while my father is not yet old, and then win some resources for Shu Han.
Third, its own strength is deficient
From ancient times to the present, no one has been able to unify the world by relying on the land of Shu alone. It's not that Zhuge Liang and Li Shimin are not powerful when they join forces, but this difficulty factor is too high!
First of all, the population is small, the initiative is lost in the terrain, and strategic resources are scarce (horses are scarce), so that the Khan can only do nothing when he comes.
Secondly, the end of the Three Kingdoms belongs to the general trend of the world, the people are tired, and there is not much time left for careerists. If it was the end of the Eastern Han Dynasty, Li Shimin would naturally be like a fish in water. But at the end of the Three Kingdoms, it was not Li Shimin who could directly reverse the situation.
Finally, the transport of food is also a big problem. Many people have wondered why Han Xin was able to secretly Chen Cang back then, and Zhuge Liang's Northern Expedition could only return in vain? An important reason for this is actually the difficulty of transporting food. During the Hanxin Northern Expedition, Sichuan to the Guanzhong region was directly connected by rivers. In the case of rivers, grain transportation can be carried by water, and the cost is very low. But later, during the Han Dynasty, a major earthquake occurred in this place, which completely broke the waterway between Sichuan and Guanzhong Province. Therefore, when Zhuge Liang went on the Northern Expedition, there was no way to take the waterway, and he could only rely on manpower to carry it. In this way, the difficulty of Zhuge Liang's grain transportation has increased too much.
Epilogue:
Therefore, the demise of the Shu Han was wrong from the beginning, and although Zhuge Liang's Longzhong pair was finally realized, the Shu Han was also equipped with a chronological instrument of destruction. The fact that Li Shimin will fight a war can definitely change a lot of things for the Shu Han regime. Even if the Northern Expedition failed many times, Li Shimin could still take advantage of the Sima family's coup d'état to take advantage of the opportunity to make the Northern Expedition, and it was still possible that the Northern Expedition would succeed. But to quickly unify the world, this is unlikely.
In the end, the difficulty of the script in the Three Kingdoms era is still too high. Many weaknesses in terms of time and place cannot be changed by the emperor's personal ability alone. Dong Hao recommends this book "The Han Empire in Bashu", which analyzes the different Shu Han regimes during the Three Kingdoms period from a unique perspective.