The Battle of Wu in the Jin Dynasty was a war in which Sima Yan, the Emperor of jinwu, sent troops to march on land and water to take Jianye (present-day Nanjing, Jiangsu Province) in one fell swoop, destroying the State of Wu in one fell swoop and achieving a war to unify the world. In November 279, Emperor Wu of Jin sent more than 200,000 troops to attack the state of Wu in six ways. In 280 AD, in the eastern battlefield, Wu Guoxiang Zhang Ti led 30,000 troops across the Yangtze River to meet the battle, was caught by the Jin Dynasty's army and defeated, the Jin army immediately decided, waving the division directly to Jianye, the Wu army was terrified and cowardly, surrendered without a fight, and the soldiers fled, so the Wu state declared its demise, which meant the complete end of the Three Kingdoms era.
In the Battle of Jin and Wu, Eastern Wu not only lacked the determination to actively resist, but also did not move the capital to the south, in order to continue to resist the Western Jin Dynasty. In other words, after the Western Jin army broke through the Yangtze River defense line, Eastern Wu basically gave up resistance.
One
First of all, the reason why Eastern Wu did not move its capital to the south in order to continue to resist the Western Jin Dynasty was mainly divided into the following points. As far as the first point is concerned, after the Yangtze River defense line was breached, Eastern Wu had no danger to defend. In the Three Kingdoms of Wei and Shu, Cao Wei's strength was far superior to that of Shu Han and Eastern Wu, and the reason why Shu Han and Eastern Wu could stand with the Three Kingdoms of Cao Wei was that the former could not be separated from the dangers of mountains and rivers, and the latter was inseparable from the dangers of the Yangtze River. Without the defensive advantages brought by these grabens, Shu Han and Eastern Wu would not have survived the late Three Kingdoms period.
On this basis, by the time of the Jin War against Wu, the Western Jin Dynasty already had the territory of the original Cao Wei + Shu Han, which made Eastern Wu appear weaker. Therefore, after the Yangtze River defense line was breached, the people of Eastern Wu were panicked, and as for Sun Hao, the emperor, he suddenly lost the will to resist, and could only emulate Liu Chan, the lord of the Shu Han Dynasty, preparing for the ceremony of the fall of the country, a white horse in a plain car, a fleshy face tied (tied with two hands), a sheep with a collar, a doctor in disgrace, and a scholar (loading the coffin on the car), so as to surrender to the Western Jin Dynasty.
Two
As far as the second point was concerned, the Eastern Wu generals were almost unwilling to fight any more, which made Sun Hao lack the necessary strength even if he wanted to move the capital to the south. In March 280, when Wang Hao's water army, which had successfully marched, arrived only a few tens of miles away from Jianye, Sun Hao sent the guerrilla general Zhang Xiang to lead 10,000 water troops to meet the enemy. For Sun Hao, he naturally had high hopes for Zhang Xiang, that is, he hoped that he could resist the Western Jin army.
However, what made Sun Hao despair was that this elephant had not yet officially fought, and it surrendered to Wang Hao. Immediately afterward, Sun Hao still wanted to resist stubbornly, and then sent Tao Mao to meet the enemy, and Tao Hao said: I only need 20,000 soldiers and horses to break through the place. However, when he was preparing to send troops the next day, he found that twenty thousand soldiers and horses had run out overnight. At the time of the demise of Eastern Wu, these things apparently spread rapidly, thus seriously dampening the morale of Eastern Wu soldiers and causing no one to be willing to fight in the end.
Three
Further, this is obviously different from the situation of the demise of the Shu Han. At the time of the fall of the Shu Han Dynasty, whether it was Jiang Wei, Zhuge Liang's son Zhuge Zhan, or The Governor of Yong'an, Luo Xian, or the Southern Central General Huo Yi, they all held the determination to die and not surrender. On this basis, after Zhuge Zhan was killed in battle, the later lord Liu Chan ordered Jiang Wei and others to give up resistance. As far as Eastern Wu was concerned, after a slight defeat, Sun Hao could not restrain his soldiers, which was undoubtedly directly related to Sun Hao's own behavior.
As the last emperor of Eastern Wu, Sun Hao could still be called a powerful king in the early days of his reign. However, after a small achievement, Sun Hao indulged in alcohol, specialized in killing, and became faint and tyrannical, which made Sun Hao lose hearts in Eastern Wu, and the people rebelled, and naturally no one was willing to fight with him again.
Four
Finally, as far as the third point is concerned, Sun Hao wants to move the capital to the south, so as to continue the war, he also lacks the conditions for implementation. After the Yangtze River defense line was broken, no matter how far Sun Hao ran south, he only exchanged space for time, but could not solve the fundamental problem. What is more crucial is that during the Three Kingdoms period at the end of the Han Dynasty, the degree of development of the southern regions such as Liangguang was relatively low, that is, from Jiangsu and Zhejiang to the south, many areas were sparsely populated, that is, there were no objective conditions as the capital for the time being.
In the same way, at the time of the fall of the Shu Han Dynasty, the later lord Liu Chan did not have the intention of moving the capital to the south, which was also because the southwest region at that time was sparsely populated and lagging behind the central plains in technology and culture, if the capital was moved to these places, there was no difference between running to the mountains and forests. And this, of course, is the result that Sun Hao and Liu Chan are unwilling to accept. What's more, even if Sun Hao wanted to move the capital and fight again, without his subordinates, then obviously there was no way to guarantee even the basic survival. In summary, after the Western Jin army broke through the Yangtze River defense line, Sun Hao basically gave up resistance, thus promoting the complete end of the Wei Shu Wu Three Kingdoms era in 280 AD.
Text/Sentimental History