Why did Liu Bei "get his land but not his man" in the battle of Hanzhong?

General Cao Cao Wang Ping surrendered, Cao Cao retreated, and Liu Bei occupied the whole territory of Hanzhong. However, when Cao Cao left, he also moved the people. Although Liu Bei won the battle of Hanzhong, there is still a saying that "the land is not for the people".

Why did Liu Bei "get his land but not his man" in the battle of Hanzhong?

Since Cao Cao was proud of Hanzhong, he had plans to emigrate. According to Zhang Lu, there are as many as 100,000 households in Hanzhong, while Liu Bei was only 200,000 when he was in Shu. Hanzhong and Wudu are one third of Yizhou's population. Since the Sanfu Rebellion, a large number of people moved to Sichuan, and a large number of people stayed in Hanzhong because of the administrative fairness in Zhang Lu. Zhang also attacked Brazil to cover the return of local tribal leaders to Hanzhong. Although Zhang Fei suffered heavy losses, Shu still lost a part of its population. /kloc-the relocation of 0/00,000 families is a long process, and we must also consider the issues of popular support and civil unrest. Cao Cao was the first to move to Zhang Lu clan, and many Buddhists also volunteered to move with Zhang Lu. It was clearly recorded in the later Biography of Du that 80,000 people emigrated from 2 15 to 2 18. Based on the shallow calculation of a family of five, Hanzhong has a population of at least 500,000, which is very slow. At that time, Cao Cao didn't want to give up Hanzhong completely, but the situation in the north was ten households and nine empty houses. Many people originally came from Guanzhong and the Central Plains, and they wanted to transfer part of Hanzhong population to the north regardless of Liu Bei's threat.

Cao Cao's second migration was in 2 19, after the death of Xia. Zhang Bichuan used the spring and autumn brushwork, which made many people mistake it for 2 15, but Sima Guang's Zi Tong Zhi Jian recorded it as 2 19. Xia's death made Cao Cao determined to emigrate completely. He went to Hanzhong to beat Liu Bei, on the one hand, to try to repel Liu Bei, on the other hand, to buy time for immigrants. Xia was killed in January, Cao Cao entered Hanzhong in March and confronted Liu Bei until May, and Zhang held on for more than two months. In addition to cleaning up Hanzhong people, Cao Cao also moved more than 50,000 Miao tribes in Wudu County to Fufeng and Tianshui. One of them, Dou Mao, refused, and the whole tribe was slaughtered by Cao Cao. Liu Bei's Wudu didn't get a population at all. Liu Bei may have got the population of Mianxian County in Hanzhong, but he was blocked from going to Nanzheng by Zhang, so he didn't get the main population of Hanzhong.

Hanzhong has always been a purely military base during the reign, and the population of Sichuan is not enough to enrich Hanzhong and it is impossible to develop into an economic zone. At that time, Zhuge Liang had to set up the only agricultural overseer in the Three Kingdoms to escort grain and grass to Hanzhong, and Shu Han had to support the Northern Expedition in Hanzhong all the year round. The advantage is that there is no residential area in Hanzhong, and Shu Han is not afraid of Cao Wei's active attack, because there is no profit at all, just a strategic place.