If the disparity in strength in the Battle of Guandu was caused by the fact that the Cao Cao group was too weak at that time, then the disparity in strength during the Battle of Chibi was that the difference in strength between the two sides was too great.

At that time, Cao Cao was more than twice as strong as Yuan Shao back then, and even if Sun and Liu were united, they could not compare to Cao Cao, who had occupied at least three states of Xuzhou, Yuzhou, and Yanzhou before the Battle of Guandu, and still controlled the Son of Heaven and the imperial court.

[Pre-war comparison]

At the time of the battle of Guandu, although Yuan Shao was strong, Cao Cao was not weak, Yuan Shao was not too far ahead of Cao Cao in terms of territory and territory of the two, on the contrary, Cao Cao also occupied an obvious advantage in terms of talent, but at that time, the Central Plains was full of war, and the territory under Cao Cao was mostly destroyed by natural and man-made disasters, so it was particularly weak under the pressure of Yuan Shao.

This is not to say that the situation within Yuan Shao's group was so good at that time, after many years of conquest, Yuan Shaojun actually needs to recuperate, but it is much better than Cao Cao, and Yuan Shao's external environment was also very stable at that time, the ethnic minorities in the north have basically been pacified, and Cao Cao is located in the center, bordering many princes, and the environment is more complicated.

But before the Battle of Chibi, Cao Cao had pacified the north, crusaded against the Wuheng people who were not obedient to him, Xiliang Ma Teng also entered the court, Yizhou Liu Zhang was the first time to send an envoy to pay tribute, his external environment was actually very stable, Zhou Yu said that Han Sui and Ma Chao were Cao Cao's troubles, more out of the need to suppress the surrender faction, and the actual situation at that time was not very consistent.

In addition, Zhou Yu also mentioned that although Cao Cao has great righteousness, he is actually a thief, which is also out of the need to refute Zhang Zhao and others, but it is impossible to deny the fact that Cao Cao occupies the moral high ground.

Cao Cao crusaded against Sun Quan, Cao Cao represented the imperial court, the Son of Heaven, Sun Quan rebelled against Cao Cao, it can be said that he resisted the king with his ministers, and if it didn't sound good, he was a traitor and a rebellion.

Relatively speaking, Sun Liu was on the defensive, and Cao Cao's attack could be considered an invasion for them, and they confronted the invaders in the posture of guardians, not completely subservient in morality.

In terms of momentum, Cao Cao has just easily captured Jingzhou, his morale is Honghong, and he has the potential to swallow Jiangdong, while Liu Bei retreated to Xiakou after a fiasco, Sun Quan can only be said to be reluctant to protect himself in the face of Cao Cao's strength, and there is no doubt that Cao Cao has the advantage in this regard.

However, the biggest gap between the Sun-Liu alliance and Cao Cao is still in the hard power, Cao Cao at that time was already the strongest prince in the world, in the power, in the territory, in the population, in the talent, in the economy, almost in any aspect is far stronger than Sun Liu, the gap is extremely large, as mentioned above, Liu Bei and Sun Quan even if they are counted, there are only seven counties at most, and Cao Cao, including Jingzhou, has controlled at least eight states in the late Han Dynasty, which is equivalent to Sun Liu fighting the enemy of eight states with one state.

The comparison of strength is also extremely disparity in military strength, Cao Cao said in the text sent to Sun Quan that he has 800,000 troops, although this is likely to be Cao Cao's own boasting, but Zhou Yu also calculated, Cao Cao led about 150,000 or 60,000 troops when he went south, and received tens of thousands of troops from Jingzhou, adding up to at least 200,000 or more, and Sun Quan's advance troops to Zhou Yu were only 30,000, plus Liu Bei, Liu Qi's troops were at most about 50,000, this gap is very large, At least in the Battle of Guandu, Yuan Shaoshi's troops when he went south should not be as many as Cao Cao's.

From an environmental point of view, Cao Cao's external environment was stable at that time. And Sun Quan and Liu Bei have been basically surrounded by Cao Cao's forces, this is mainly due to Liu Cong surrendered without a fight, and gave Jingzhou to Cao Cao, which made Liu Bei and Sun Quan very miserable, after losing the Yangtze River, Sun Quan and Liu Bei have lost their geography, and Cao Cao also has the upper hand in the external environment.

Internally, there was opposition within Cao Cao's group at that time, and Jia Xu thought that he should not send troops, but in the end he was suppressed by Cao Cao, and Sun Quan also forcibly suppressed the main surrender faction and decided to fight. Both sides were internally stable before the decisive battle.

Within Cao Cao's army, at that time, the main force was Cao Cao who brought most of the northern soldiers, plus some of Jingzhou's soldiers, but the northern soldiers were not adapted to the weather in the south, and they were not good at water warfare, and Jingzhou's people were just attached and the people's hearts were not stable.

But in this regard, the Sun-Liu Alliance is not much better, first of all, some of the 20,000 soldiers under Liu Bei's command are their own, they have just experienced a fiasco, and it is unknown how much combat power they can exert, and the other part is under Liu Qi's command, Liu Bei is not their master. In terms of Eastern Wu, although Zhou Yu was not the only commander, he was the governor of the left capital at that time, and Cheng Pu was the governor of the right capital, and Zhou Yu can also be said to represent the Sun Ce department, and Cheng Pu represents the Sun Jian department, and the relationship between Zhou Yu and Cheng Pu is not good.

Therefore, although the Sun-Liu coalition army is only about 50,000 people (maybe less), the factions are extremely complex, and there are four factions including Liu Bei's faction, Liu Qi's faction, Zhou Yu's faction (Sun Ce's faction) and Cheng Pu's faction (Sun Jian's faction), and the joint communication between them is not a trivial problem.

[Desperate Strength Comparison]

The Battle of Chibi was more desperate before the war than the Battle of Guandu, Sun Liu faced Cao Cao, who was far more powerful than Yuan Shao, and even if they were united, they were inferior to Cao Cao back then.

Cao Cao coerced the Son of Heaven and ordered the princes to occupy the righteousness, but Liu Bei and Sun Quan could only be scolded by Cao Thief and Cao Thief, but they could not prevent the court from unilaterally falling to Cao Cao's side; Sun Jian, Sun Ce and Sun Quan fought Jingzhou for more than ten years, and barely conquered half of Jiangxia, while Cao Cao easily got almost the entire Jingzhou from Liu Cong, so Sun Quan and Liu Bei not only lost the Yangtze River, but were almost completely surrounded by Cao Cao's forces; And Cao Cao crushed Sun Quan and Liu Bei in hard power, and the union of the two sides was forced, but even if the two were united, they seemed so small in front of Cao Cao.

The disparity, the disparity, the desperate disparity, this is the desperate situation that Sun Quan and Liu Bei faced at that time, and this is also the result of Sun Quan's defeat in the race against time.

After Cao Cao successfully captured Jingzhou, Sun Quan and Liu Bei could not see any hope, they should not have any chance of winning in the face of Cao Cao, at that time it seemed that Jiangdong should have been Cao Cao's hand, but, however, at this moment, the goddess of luck smiled at them.

Cao Cao could win with his eyes closed, but he lost, not only lost this battle, but also lost all the territory south of the Yangtze River in the end, and the results of his southward journey basically came to naught.