To say Gansu, we must first say "Hexi Corridor". As the name implies, Hexi Corridor is a corridor to the west of the Yellow River.
Topographically, Hexi Corridor is a long and narrow passage in the north of Qilian Mountain and south of Helishan Mountain. Just like a valley, it is the only way from the inland Central Plains to Xinjiang and Central Asia. In ancient times, China's maritime industry was not so developed, and the risk factor at sea was much larger than that on land, so the strategic position of Hexi Corridor stood out in the communication between Central Asia and even Europe.
To the south of Hexi Corridor are plateau mountains and to the north are Mongolian grasslands. Some people say, wouldn't it be flatter to take Mongolian grassland?
At an earlier time, the Mongolian grassland was indeed rich in water and grass and the environment was very good. However, with the change of climate, most of Mongolian grasslands have degenerated into deserts, which are no longer suitable for human habitation, so the advantages of Hexi Corridor have emerged.
Dayu divides the world into Kyushu, and Gansu belongs to Yongzhou and Liangzhou. In other words, in the era of Three Emperors and Five Emperors, Gansu was already in China.
Shang tribes lived in groups all over the country, and the tribe in Gansu was called Xirong. Different from the agricultural economy of the tribes in the Central Plains, Xirong developed a nomadic economy.
In the Zhou Dynasty, Qin people came to Hexi Corridor, and they gradually changed from nomadic life to farming life.
Qin State and Qin State destroyed the Yi Canal, the whole Gansu area and even the territory of Qin State until Qin Shihuang unified the world. "Books and texts are on the same track, and the quantity is unified" means that people all over the country write with Xiao Zhuan, a steelyard and a ruler as wide as a wheel.
After Xiang Yu and Liu Bang overthrew the Qin Dynasty, the country began to fall apart again, which coincided with the troubled times of those years. The climate of Mongolian grassland changed, and the Huns could not survive. The north is cold Siberia, Russia, and the middle is desert Mongolian grassland. Huns had to go to Hexi Corridor to make a living.
In the Han Dynasty, after Liu Bang conquered the world, he took a break and saved a lot of money for his grandson Liu Che. The country's climate has also improved, and people's lives have gradually improved. Liu Che is ready to open its territory.
In fact, Liu Che is not as crazy as he thought, because the Huns occupied the Hexi Corridor, so they can't farm, so they can only graze. And there is no place to graze in such a narrow place in Hexi Corridor, so they can only grab it back and forth. To rob Liu Che Ji Yan, brother-in-law Wei Qing sent in the past.
Wei Qing was very impressed. At that time, the Han Dynasty attacked Xiongnu on a large scale for the first time, and sent four routes to fight. Wei Qing went all the way to the lair of Longcheng, and the other three roads were defeated and tied.
Like father, like son, Wei Qing took his nephew Huo Qubing all the way to Xushan (now the northern part of outer Mongolia, the border area between Mongolia and Russia). "From now on, there is no Wang Ting in Mobei", and the Xiongnu lair was taken away by his father.
"But make Longcheng fly, and don't teach Huma to cross the Yinshan Mountain."
During the period of Emperor Wu of Han Dynasty, Hexi Corridor returned to the territory of Han regime. In order to show the national prestige of the Han Dynasty, Liu Che set up Wuwei (the military prestige of Wuwei), Zhangye (the arm of Zhang Guotao), Jiuquan and Dunhuang in Gansu.
In the Northern and Southern Dynasties, the Western Wei Emperor changed Zhangye to Ganzhou and Jiuquan to Suzhou, from which Gansu came.
The geographical position of Gansu determines his uniqueness, and the scenery of Hexi Corridor is also adjacent to Jiangnan, which is beautiful. The rise of the Belt and Road Initiative, a huge arm of our country, is also exerting great power.