List the historical facts of China's ancient development and management of northwest China.

Typical examples are the establishment of the Western Regions and Ban Chao's governance of the Western Regions.

In the first year of Tai Chu (BC 104), Emperor Wu of the Han Dynasty sent Li Guang's troops to attack Dawan, killed the envoys of the Han Dynasty and robbed them of their property. ..... (After the Great Bay was breached), Emperor Wu of the Han Dynasty ...... carried out military reclamation in Luntai and Quli areas, set up a captain to manage the emissary, and provided accommodation, food and water for the emissary who went to the western regions. Later, the captain of the emissary actually became an official who took care of the western countries on behalf of the Western Han government.

The invasion of Dawan by the Han army caused great shock in the western regions, and various countries sent envoys to pay tribute to the Han Dynasty. But the Huns still have power in the western regions, controlling the drivers. It was not until the second year of Emperor Xuandi of Emperor Gaozu of Han Dynasty (60 BC) that civil strife broke out in Xiongnu, and the western Japanese king led his troops to Han, and his servants were abolished. All ethnic groups in the western regions completely got rid of the exploitation and slavery of Xiongnu nobles and accepted the direct governance of the Han government. The Han government built beacon towers and city walls in various parts of the western regions. Ji Zheng was appointed as the capital of the Western Regions, and the capital is located in Leo. In addition to Luntai, Quli and Yixun, the Han government also carried out military reclamation in shache, the former Cheshi and Wusun Kingdom.

The Han Dynasty defeated the Xiongnu slave owners and nobles, and established the Han Western Region Reserve, which freed the people of all ethnic groups in the Western Region from the shackles of the backward Xiongnu system, strengthened the ties between Han and the Western Region, and played a positive role in safeguarding the reunification of the motherland and the economic and cultural development of all ethnic groups in the Western Region.