Why did Zhu Yuanzhang conquer Yunnan?

The most important reason is that although Yunnan has been called the land of barbarians since ancient times, it borders Guizhou Province and Guangxi Zhuang Autonomous Region in the east, Sichuan Province in the north, Xizang Autonomous Region in the northwest corner, Myanmar in the west and Laos and Vietnam in the south. Its unique geographical location embodies important strategic value.

As early as the end of the Eastern Han Dynasty, the so-called south-central region refers to Yizhou County (with Dianchi Lake as the center, including today's central and eastern Yunnan), Yongchang County (today's western Yunnan and southern Yunnan in today's Baoyishan, and today's Shidian), Guangdong-Jiangxi County (located in today's Xichang, Sichuan, including the vast areas in western Sichuan and northwest Yunnan) and Qunke County (including this area as the backyard of the so-called western Shu), which are economically and strategically. When Zhuge Liang first met Liu Bei, he made a strategic analysis for Liu Bei (Longzhong Dui), saying, "If you have advantages, you will benefit from crossing the bridge, then protect its rock resistance, and the west and south will help Yiyue." Jingzhou is the area of today's two lakes, and Yizhou is not the Yizhou County mentioned above, but the Yizhou Department, which is the southwest region centered on Sichuan.

"West and Zhurong, South Fu Yi Yue" mainly refers to dealing with the relationship with ethnic minorities in Central and South China. This shows that Zhuge Liang has long noticed the important strategic value of South China.

And Wu Sangui in the San Francisco Rebellion in the Qing Dynasty. Since November 21st of the 12th year of Kangxi, Wu Sangui has been fighting against Qing Dynasty. On October 29th, 20th year of Kangxi, Wu Shifan committed suicide and the Qing army entered Kunming. The San Francisco rebellion lasted for eight years. In order to stabilize the strategic position of the rear, the Qing court spent countless manpower and material resources.

1979 February 17, the Sino-Vietnamese war broke out, that is, the self-defense counterattack. The truth is that the total number of casualties between China and Vietnam in the 1979 war was almost equal, with more than 60,000 Chinese and less than 80,000 Vietnamese. However, among the Chinese casualties, the wounded accounted for the majority, and the death toll was only 6,000, mostly in the first few days of the war. The mortality rate in Vietnam is very high, with nearly 50 thousand deaths. China's goal is that the sovereignty of this strategic place will not be violated.