At that time, Sun Quan, Cao Cao and Liu Bei all wanted to unify the whole country, and only Sun Quan opposed it.

Cao Cao hopes that the world will be unified. He controls nearly 60% of the country's territory. He is powerful, powerful and powerful, and the military and political power is in his hands. The conditions for unifying the world are the most mature and the opportunities are the greatest. Unifying the world is also good for Cao Cao, because he is the de facto master of state power.

Liu Bei also hopes that the world will be unified. He is a clan named Liu, and "revitalizing the Han Dynasty" is his lofty political ambition. Zhuge Liang was his assistant before his death and an official he trusted after his death. In order to unify the world, he inherited his political ideal and made many northern expeditions. Unifying the world is also good for Liu Bei, who has good reasons and a high-sounding banner to gain the highest power in the country.

Therefore, on the goal of world unification, Cao Wei and Shu Han are completely consistent, and the contradiction mainly lies in who will unify and who will gain the supreme power of the country.

Sun Quan, on the other hand, is the last person who wants the world to be unified. He has the greatest difficulty in unifying the world, the least benefit and the weakest desire.

Because at that time, in Soochow, where Sun Quan was located, the people did not want to be unified.

Soochow, under the jurisdiction of Sun Quan at that time, was much better than the places ruled by Cao Cao and Liu Bei at that time, and it was the best place for economic development. Moreover, most of the wars at that time took place in the north, and Soochow was located in the south, which was not affected by too many wars. Coupled with abundant local resources and fertile land, the people of Soochow can live a leisurely life without reunification.

In addition, in order to unify the world, there must be war, which wastes people and money. Therefore, if there is a war, it will definitely increase the burden on the people, impose exorbitant taxes and miscellaneous fees, and lower people's living standards, which Sun Quan does not want to see.

Another reason is that Soochow, ruled by Sun Quan at that time, did not have the military power to unify the world compared with Liu Bei and Cao Cao.

Compared with Liu Bei and Cao Cao's active attack, Soochow, where Sun Quan is located, has always been mainly defensive, and because Soochow is located in the south of the Yangtze River, it has not developed its army as vigorously as in the north, but focused on building a water army. But if you want to unify the world, you can't avoid going to the north to fight and develop Lu soldiers, so Wu Dong doesn't have the military power to unify the world.

Third, Soochow lacks the political slogan of unifying the world.

Cao Cao "used the emperor to command the princes", and in the name of today's emperor, he ordered all parties to conquer "disobedience", with a clear-cut banner and a loud slogan. Liu Bei used himself as a "Han clan" as an excuse to get rid of traitors, restore orthodoxy and revive the Han clan. The reason is also very sufficient and impressive.

What excuse does Sun Quan have to unify the world? He does not control the puppet emperor, nor is he a descendant of Liu. The only reason why he wants to be unified is to be emperor, which will not only be opposed by external enemies, but also be unable to convince the inside.

In this way, we can explain Wu Dong's various behaviors.

When Cao Cao fought Yuan Shao and wanted to unify the north, Sun Ce deliberately attacked Cao Cao's rear road, trying to make Cao Cao fall into a situation of fighting on both sides and prevent him from developing and growing.

When Cao Cao led his troops south, Wu Dong and Liu Bei joined forces to prevent Cao Cao from unifying the world.

When Liu Bei took Xichuan and captured Hanzhong, the development situation was excellent, and Guan Yu was marching north to Xiangfan, and the frontier was like a bamboo, Soochow did not hesitate to tear up the Covenant, sneak attack Jingzhou, capture and kill Guan Yu alive, and stopped Liu Bei's expansion momentum.

After Liu Bei's death, Shu Han fell into a "dangerous autumn". When the national strength was weak and stormy, Sun Quan quickly reached a settlement with him, restored the alliance and confronted Cao Wei, who was eyeing up.

Because he doesn't want reunification, Sun Quan will attack anyone who takes a step towards reunification.

Having said that, everyone should understand why Zhuge Liang resolutely rejected Wei Yan's "Wonder of Woods Valley".

At that time, Wei Yan wanted to send troops to attack Chang 'an in Meridian Valley. If the war fails, the losses of Shu Han will be very heavy. Even if it succeeds, the alliance between Wu and Shu will be broken immediately, and Sun Quan will never sit idly by, not to mention the lesson of Guan Yu's downfall. Wei and Wu were caught in the attack, and they simply could not stand it.