After the Battle of Chibi, Cao Cao decided to adjust his strategy and prepare to advance westward into Guanzhong and take Zhang Lu under Yizhou. Liu Zhang, in order to cope with Zhang Song's advice, decided to welcome Liu Bei, who had always been known for his "benevolence", to help him. Liu Zhang originally thought that with the help of his brother Liu Bei, he would be able to keep Yizhou unharmed, but who ever thought that this was the biggest mistake he had made in his life.

Liu Bei had long coveted Yizhou, but there was no suitable opportunity, and he did not expect Liu Zhang to take the initiative to invite him to Shu, which was really a once-in-a-lifetime opportunity, and Liu Bei certainly would not let it go, so he agreed to Liu Zhang's invitation with joy. Liu Bei marched into Yizhou with his men and horses, and Liu Zhang, in order to show the enthusiasm of the host, personally took the officials of Shudi out of the city to greet him, which can be described as full of sincerity.
After Liu Bei entered Sichuan, how did Liu Zhang specifically treat Liu Bei? "The front and rear bribes were huge hundreds of millions", "with 200,000 yuan of rice, riding a thousand horses, riding a thousand cars, and a thousand horses, and "adding the main soldiers", so "more than 30,000 people were combined, and the equipment and equipment were very rich". It is enough to see Liu Zhang's righteousness and kindness. At this time, Liu Bei was thinking about how to oppose the guests and take Yizhou as his base camp.
Under Liu Zhang's hospitality, Liu Bei was outwardly polite to Liu Zhang, but secretly began to buy people's hearts, but a year later, in the name of rescuing Sun Quan, he asked Liu Zhang to give another 10,000 horses and corresponding supplies and lead his troops back to the east.
Although Liu Zhang sensed something was wrong, he still gave Liu Bei 4,000 soldiers and horses, as well as the corresponding materials and grain. At this point, Liu Zhang is actually very generous. He sincerely hoped to join hands with Liu Bei against Cao Cao, but Liu Bei was not satisfied with this and had been thinking about the whole of Yizhou. Soon he turned his face to Liu Zhang, and Zhang Song, a spy who secretly communicated with Liu Bei, was eventually killed by his brother Zhang Su Dayi because of his betrayal of the lord's behavior of seeking glory, and reported to Liu Zhang, and was finally killed by Liu Zhang.
In this regard, Liu Bei and Liu Zhang officially went to war.
This battle lasted for three years, during which Liu Bei's large army, Pang Tong, was killed by Liu Zhang, which once plunged Liu Bei into a bitter battle. Later, Zhuge Liang led Zhang Fei and Zhao Yun to lead troops from Jingzhou to support Liu Bei. In 214 AD, Liu Bei's army surrounded Chengdu, and at that time there were 30,000 elite soldiers in the city, and there was enough grain and grass to support the people and soldiers for a year. At that time, the officials and people of Chengdu were united in their hearts, united in their hatred and enemies, and were ready to resist to the death. However, Liu Zhang decided to abandon the resistance, and the Book of Later Han records: "Father and son were more than twenty years old in the state, and there was no grace to add to the people, and after three years of attacking, the muscle cream grass was also the same." Ho Shin Neng An! ”
This passage liu zhang said: "Our father and son have been in Yizhou for more than twenty years, they did not give the people much kindness, but let everyone fight with me for three years, and now because of me, many people have died in the grass and wild because of the war." How can I be at ease now that everyone has followed me through the pain of war? In this way, Liu Zhang opened the city gates and went out of the city to surrender, and there was no one under the generals and the people who did not cry.
It is enough to see that in the minds of the people of Shudi, Liu Zhang may not be a "Ming Jun", and it is precisely because Liu Zhang has a deep mass base in Shudi and is deeply loved by the people that Liu Bei appeared so difficult in the process of seizing Yizhou and paid a heavy price.
After Liu Bei seized Yizhou and tricked Liu Zhang, how did he treat this brother of the Ben family? The Book of the Later Han Dynasty records: "Bei Qianzhang was transferred to the public security and returned to his treasure." In the end, Liu Bei did not kill liu zhang, moved Liu Zhang to the public security, and returned Liu Zhang's original property to him intact.
But the matter did not end there, and soon after, Liu Bei and Sun Quan tore their faces, and just when Guan Yu launched the Battle of Xiangfan, Sun Quan took the initiative to show favor to Cao Cao and took the opportunity to sneak up on Guan Yu and occupy Jingzhou. Liu Zhang, who originally thought he could spend the rest of his life in Gong'an County, once again became a pawn in Sun Quan's hands.
Since Jingzhou had been returned to Eastern Wu, Sun Quan, in order to disgust Liu Bei, specially appointed Cao Cao as the pastor of Yizhou and lived in Zigui. Liu Zhang, who was toyed with by others, eventually became depressed.
His eldest son, Liu Xun, on the recommendation of his father-in-law Pang Xi, served in the Shu Han Dynasty, and the official worshiped the general Chezhong Lang. Liu Zhang's second son Liu Yan followed his father to exile Jingzhou, and after Liu Bei lost Jingzhou, when shu Han Yongmin and other places rebelled, Liu Yan was appointed by Eastern Wu as the Assassin of Yizhou, stationed on the border of Jiaozhou and Yizhou. After Zhuge Liang pacified The Southern Barbarians, Liu Xian returned to Wudi, and Sun Quan made him The Imperial Historian Zhongcheng .
In this way, Liu Zhang's two sons and descendants lived in Wu and Shu respectively. In the three kingdoms full of disputes, an ending like Liu Zhang's, which can not only end well himself, but also save future generations, is already very good! What do you think?