How many glorious memories of the Han Dynasty have been recorded by the historical humanities in the Western Regions?

According to Hanshu, the location of the Western Regions is in the west of Xiongnu territory and the south of Wusun State. There are two mountains in the north and south, namely Kunlun Mountain and Tianshan Mountain. The Tarim River flows through the middle, with a width of about 6000 li from east to west and a length of 1000 li from north to south. The eastern part of the Western Regions is close to the Han Dynasty, bounded by Yumenguan and Yangguan. The western regions are bounded by the green ridge in the west, and the south Kunlun Mountain reaches Jincheng County in the east, which is connected with the south mountain of the Han Dynasty, namely Qilian Mountain.

The great river flowing through the western regions is supplemented by two sources: one from the green ridge and the other from the darkness. Yutian is at the foot of Kunlun Mountain. Its water source flows northward, joins with the river flowing from Congling, and then flows eastward into Puchanghai.

Pu Changhai has a name called Yanze, which is now Lop Nur. Yanze is more than three miles away from Yumenguan and Yangguan, and the lake is vast, reaching more than three hundred miles. The lake doesn't flow all the year round, whether in winter or summer, it doesn't increase or decrease. Because of underground water supply, some people think that the water in this lake dives underground, passes through Jishi Mountain to the south, and then flows out to become the Yellow River in China.

At that time, the Han Dynasty often entered and exited the Western Regions from Yumenguan and Yangguan. There are only two passages from Yumenguan and Yangguan to the Western Regions. Starting from Shanshan, near the northern part of Kunlun Mountain, along the Tarim River to the west, and reaching shache, it is the South Road; The south road crosses the green ridge to the west, that is, it reaches Dayue home, the country of rest. Starting from Wangting in front of Cheshi County, along Tianshan Mountain and westbound along Tarim River, it reaches Shule, that is, North Road. From the north road to the west through the green ridge, you can reach Dawan country, Kangju country and Amat country.

Most countries in the western regions belong to indigenous peoples, with walled farmland and animal husbandry, and their customs and habits are very different from those of Xiongnu and Wusun. Before the central plains government intervened in this territory, almost all the countries in the western regions were under the jurisdiction of Xiongnu. Attila even set servants and a captain in the western regions to manage the western regions, and at the same time, he also levied taxes on the countries in the western regions and plundered property.

The central plains government really intervened in the land of the western regions, which began in the Han Dynasty. Starting from Zhang Qian, the Han Dynasty began to cut into the western regions. Later, Huo Qubing, an ancient general in title of generals in ancient times, captured the right land in the west of Xiongnu, forcing the evil king of Xiongnu to surrender. In the western homeland of Xiongnu nomads, Jiuquan County was set up from Lingju County to the west. Later, in the Han Dynasty, people migrated continuously to expand the territory, and there were four counties, namely Wuwei County, Zhangye County and Dunhuang County, plus the former Jiuquan County.