Southwest Development of Tianlong Tunpu Ancient Town in Past Dynasties

Yunnan-Guizhou Plateau, located in the southwest of the motherland, is surrounded by mountains and rivers, and has always been regarded as a barbarian land by rulers. According to historical records, the earliest Central Plains immigrants who entered this magical land were Zhuang Mi at the end of the Warring States Period. According to Sima Qian's Biography of Southwest Yi in the Han Dynasty, when Chu Weiwang started his army (note: it was the fault of the king of Chu), the general Zhuang Mi sent his troops upstream, just west of Bashu and Qianzhong. Therefore, Zhuang Mi, Chu Zhuangwang Miao also. To Dianchi Lake, the place is 300 miles, the side is flat, and the fat is thousands of miles. It must belong to Chu's military power. If you want to return, Qin will seize Chuba and Qianzhong County, and the road will be impassable. Because you don't return it, you have to rely on its king. Change the custom of obeying it and learn from it. "Zhuang's Chu army fought all the way to Dianchi Lake and won a great victory. When he wanted to repay, Chu was destroyed by Qin, and he had to lead his people back to Yunnan to become the king of Yunnan. He was soon easily persuaded and melted into the ethnic groups in southwest China. Secondly, during the Qin and Han Dynasties, after Qin Shihuang unified the Central Plains, Bai Changjia built the famous ancient post station "Wuchi Road" in order to strengthen the setting of counties in the southwest. Wuchi Road starts from Yibin, Sichuan and ends in Qujing, Yunnan. In the Western Han Dynasty, Emperor Wudi sent Tang Meng to South Vietnam, where he ate a kind of food called "ketchup". He thought it was very sweet, so he asked the place of origin. People in South Vietnam said that it was produced in Bashu and shipped from Yelang. So Tang Meng thought of the whimsy of controlling South Vietnam from Yelang. Finally, please go to the court. The troops "Fupang Jiang Ge" entered the Yelang situation, and soldiers were sent to South Vietnam. In order to open up Indian trade routes, Emperor Wu of the Han Dynasty also sent general Guo Chang to March on an expedition to Yunnan. The above Han people have little effect on the development of southwest China. Until the Tang, Song and Yuan Dynasties, the southwest region had not been developed in any practical sense. Although the rulers of the Yuan Dynasty let the Yi, Bai and other ethnic minorities in Yunnan open fields, the southwest is still wild. All ethnic groups and tribes are fragmented, and it is difficult to really implement the central government decrees. Road traffic is also very backward, only relying on a few bumpy postal routes to contact the outside world. It was not until the farmland was reclaimed during the Hongwu period of the Ming Dynasty that the prelude of Xi's "Southwest Development" was vigorously opened.