Without Zhuge Liang, Liu Bei might have taken off a little later, and he wouldn't have been unable to fly because he lacked anyone.
Liu Bei invited Zhuge Liang, and his personal hegemonic career suddenly lit up a bright light, and from then on he also began to win the battle, and under Zhuge Liang's plot, he took 2/3 of Jingzhou, replacing Liu Zhang and capturing Yizhou, and Liu Bei's career set sail.
Without Zhuge Liang, wouldn't Liu Bei be able to fly?
Non also. The figures who can be called heroes of that time by Cao Cao are by no means idle people. Without Zhuge Liang's help, Liu Bei might not be able to mix in Jingzhou. Not being able to go on does not mean that he has fallen, he has a place to defect, and Yizhou is the next place where Liu Bei will be in trouble.
If Liu Bei enters Sichuan, with Liu Bei's recognition of charm, coupled with the defeat in Jingzhou, it is believed that Liu Bei will soon make up his mind to replace Liu Zhang. Yizhou and Jingzhou are not the same, the warriors of Jingzhou all want to seek a stability, and it does not matter who follows them. Therefore, Liu Biao came to support Liu Biao, and Cao Cao came, and when he saw that he could not do it, he threw up his own lord and surrendered to Cao Cao. Their ideas are like Lu Su and Sun Quan's analysis:
If su and other demotions, when the party returns to the hometown with su, the tired officials will not lose the state and county; the general will demote the exercise, and want to return to peace? The position is not a marquis, the car is not more than a ride, the ride is not more than a horse, never more than a few people, how can the south be called lonely!
The shi clan of Jingzhou was still a prefecture and county. The vast majority of the native warrior clans of Yizhou actually think the same way, but unlike Jingzhou, yizhou also has a special group, the Dongzhou faction. This Dongzhou faction was the one that Liu Yan had brought with him. These people have ambitions and want to do something. Typical representatives are Fa Zheng, Zhang Song, Meng Da, and Wu Yi. If Liu had the idea of replacing Liu Zhang, they would definitely fully support it.
Among these people, Fa is a good talent, and his good use is not inferior to Zhuge Liang. Helping Liu Bei to gain Yizhou was definitely not a problem.
After Cao Cao took Jingzhou, he might attack Yizhou first, affecting Liu Bei's replacement work, but according to the degree of difficulty, Cao Cao was more likely to attack Sun Quan in Yangzhou first. After all, it was too difficult for Shudi to enter the river without a map. Once Cao Sun went to war, it gave Liu Bei the opportunity to integrate Yizhou.
Cao Cao attacked Sun Quan in Yangzhou, because of the presence of Zhou Yu and Lu Su, Cao Cao could not surrender Sun Quan, and the two sides would still fight in chibi. Although it was Sun Liu who defeated Cao Cao in the rendition, the actual main force against Cao Cao was still sun quan's side, and without Liu Bei, it actually had little impact. Don't look at the Battle of Chibi in the rendition Zhuge Liang borrowed arrows and borrowed the East Wind, in fact, it is not so evil, Eastern Wu can definitely defeat the inflated Cao Cao.
The final outcome was that Sun Quan occupied Yangzhou and Jingzhou, and Liu Bei occupied Yizhou. If Liu Bei's integration of Yizhou was fast, he might be able to take the opportunity to share a piece of the pie and obtain a part of Jingzhou's land.
Cao Cao was still the strongest prince. In order to fight against the powerful enemy Cao Cao, the Sun and Liu families eventually had to go to an alliance. Without the entanglement of interests in Jingzhou, the alliance between the two sides may be more stable.