After Qin destroyed Shu, the six countries were destroyed with the grain and grass in Shu, and there was no shortage of food? Why is Zhuge Liang always short of food?

In the ninth year of King Huiwen of Qin, Sima Cuo, the general of Qin, led his troops to destroy Shu and completely merged into Qin. Since then, in the process of Qin's unification of the six countries, the role of granaries in central Sichuan has been very significant. Apart from the long-term confrontation between the two countries such as the Changping Campaign, the State of Qin was not short of food. However, Qin's experience can't be used for reference in the Three Kingdoms period, and there are three reasons for its fundamental difference.

First of all, Qin is auxiliary and main in Shu.

During the Warring States period, Zhongshu was only an auxiliary granary of Qin State. Why? Because Qin is also related to the granary of the university, the foundation of Qin is in Guanzhong, not. The main population is concentrated in Guanzhong. Guanzhong at that time was different from Ming and Qing Dynasties. Due to climate change and the evolution of political center, Guanzhong is very rich, and its grain output is much higher than that of central Sichuan. Even if there are natural disasters, as long as there are natural disasters in Guanzhong and Guanzhong, as long as Guanzhong and Guanzhong become poor areas, Qin is not afraid of food shortage.

However, for Han Shu in the Three Kingdoms period, Zhongshu was the only foundation stone. Within the territory directly under Shu and Han, there are only Chengdu Plain and Hanzhong Plain. Meng Huofu in Yunnan and Guizhou belongs to the rice harvest system and will not take the initiative to supply grain to Shu Han. Of course, they think there is not much food. Therefore, if Shu Han encounters natural disasters, Qin will not have strong resistance. In addition to war, they must also keep. In this way, the food available for war is very limited.

Second, the nature of Qin ruling Shu is different from that of.

Before Qin destroyed Shu and entered Sichuan, these two countries were nominally two vassal States, and Qin was a country that destroyed Shu by force. In Shu, Qin occupies an absolute dominant position. Therefore, the state of Qin can squeeze the grain supply at all costs, regardless of the lives of Shu people. At the same time, the aristocratic families of Shu have no control over the monarch and subjects of Qin. If he is dishonest and opposes Qin's policies, Qin can destroy them without hesitation. All this is to provide more food for Qin Jun in central Sichuan.

During the Shu and Han Dynasties in the Three Kingdoms, Liu Bei's influence was not as good as that of Qin. No matter how Liu Bei got it, Liu Bei and the Shuzhong family were officials of the Han Dynasty. Especially after Guan Yu lost Jingzhou, the only land left by Liu Bei was Zhongshu. To consolidate the rule, we must rely on Zhong Shu, Liu Bei and Zhong Shu. The aristocratic families in the middle of Shu were also one of the main ruling classes in the Shu-Han period. Neither Liu Bei nor Zhuge Liang can squeeze into Shu like Qin.

Third, the aristocratic families in the middle of Shu opposed the invalidity of Qin, but they could oppose Zhuge Liang's Northern Expedition.

As mentioned earlier, the state of Qin occupied the grain in Sichuan. It doesn't care whether the interests of the aristocratic families in the middle of Shu are occupied. Qin Jun could seize food by force, but the aristocratic families in Shu didn't have the courage to resist Qin. As a member of the ruling class of Shu and Han, Zhong Shu's aristocratic family may bring trouble to Zhuge Liang. The grain strategic resources of the Han Dynasty were concentrated in the hands of aristocratic families, because most of the land was in their hands. Zhuge Liang can only consult with them, not forcibly levy grain.