In 192 AD, something that changed the course of history was issued, when a rebellion occurred in Chang'an, Dong Zhuo was killed, and since then, the picture of the Three Kingdoms that has been raging in war has continued in history.
In the third year of the Eastern Han Dynasty (192), in this year, the Chang'an Mutiny, Dong Zhuo was killed, and the major forces in Guanzhong were not willing to be lonely, and began to ping-pong and ping-pong.
By the first year of Jian'an (196), the world had been divided up by major separatist forces. For example, the three prefectures of Ji, Qing, and He were given to Yuan Shao; Cao Cao occupied Youzhou, and Liaodong was under the jurisdiction of Gongsun Du; while Xuzhou was successively occupied by Tao Qian, Liu Bei, and Lü Bu; Yuan Shu occupied Huainan of Yangzhou; Sun Ce divided Yangzhou Jiangdong; Liu Zhang occupied Yizhou; Jingzhou belonged to Liu Biao; and the Hanzhong region was occupied by Taoist organizations led by Zhang Lu.
The territory is so big that each family's division is small, so the powerful forces are not satisfied with the status quo and continue to expand the territory.
In the thirteenth year of Jian'an (208), Cao Cao, after a fruitless confrontation with Yuan Shao's sons, continued to lead his troops south and attacked Liu Biao's territory of Jingzhou. At this time, Liu Biao was already dead, and Liu Biao's son Liu Chun inherited Jingzhou, and he could not defeat Cao Cao and could only surrender, which made Liu Bei, who was originally attached to Jingzhou, flee south in fear.
Liu Bei fled to Chaisang (柴桑, in present-day southwestern Jiujiang, Jiangxi), where he joined forces with Sun Quan to confront Cao Cao. Don't look at Sun Liumeng's small number of soldiers, but the Cao army is not good at water warfare, they defeated the Cao army at Chibi with a weak victory, forcing Cao Cao to retreat to the Central Plains.
The Battle of Chibi also changed the direction of history again, forming a situation in which the Three Kingdoms stood tall.
After the Battle of Chibi, Liu Bei's power was also strengthening, but it was still incomparable with Cao Cao, so Sichuan fell into the eyes of him and Sun Quan. This place in Sichuan, the location is good, the resources are also more, it is a place that can make a lot of achievements.
But don't forget Cao Cao, he has ambitions to unify the Central Plains, and naturally he is also determined to win Sichuan. His idea stumbled on Sun Quan, so that Liu Bei and Sun Quan could not free their hands to attack Sichuan for the time being.
In 215, Cao Cao attacked Hanzhong and Zhang Lu surrendered, which led to Liu Zhang's increasingly bad situation in Yizhou. When there were foreign enemies looking at the tiger, Liu Zhang's internal group still did not stop, and eventually collapsed due to open strife and secret struggle.
Liu Zhang, fearing that Cao Cao was going to attack Sichuan next, asked Liu Bei for help, hoping to form an alliance against Cao Cao. After Liu Bei learned about it, he thought that this was a heavenly opportunity, and it was a good time to march into Sichuan. So Liu Bei asked Guan Yu to stay in Jingzhou, and he himself led tens of thousands of infantry to Yizhou.
Subsequently, Liu Zhang recommended Liu Bei as the Grand Sima and Lieutenant Colonel, and he himself was the General of Zhenxi and the Pastor of Yizhou.
One day, Liu Bei received news from Jingzhou that Cao Cao was going to fight Sun Quan. Liu Bei was not allied with Sun Quan, so Liu Bei wanted Liu Zhang to send 30,000 elite soldiers and 100,000 troops to help Sun Quan. Unfortunately, Liu Zhang was afraid that these factions would not be able to take them back, and then his own strength would be weak, so he was only willing to send 3,000 troops out of Sichuan to help.
Liu Bei had already had a rebellious heart, this time Liu Zhang did not do things authentically, he just took the opportunity to turn his face with Liu Zhang, and reproached: "Hmm, I fought desperately for you to resist Cao Cao, but you are reluctant to pay here, how can I cooperate with you as a person like you!" Let's part ways! ”
Then, Liu Bei took the lead and declared war on Liu Zhang, and directly hit Chengdu.
@Ruyi said literature history
Chengdu is the top priority of Sichuan, and if Chengdu is taken, naturally Sichuan will belong to Liu Bei. In this way, Liu Bei borrowed Liu Zhang's "corpse" to return his soul, completed the expansion of his power, and also occupied Sichuan, established the state and made it a foot in the Three Kingdoms.
So don't be too stingy, especially if others have helped you. Seeing death and not saving, cold eyes and bystanders are all the next strategy, not only to implement the truth, but also to lose the morality of human character. When no one wants to come with you, your path becomes narrower and narrower.
It is possible to have a blessing in making good friends, and it is not certain when it will be able to help you, become your noble and noble thing, and make your life go smoother, or even to a higher level.