In 206 BC, Xiang Yu led the troops into Xianyang and burned Epang Palace. In order to prevent Liu Bang's influence from expanding and contain Liu Bang, he divided the middle and northern Shaanxi into three parts: sealing Qin to surrender to the king of Yong, and both abolished the hills, governing the west of Xianyang and the east of Gansu; Make Sima Xin the king of the game, located in Liyang, which governs the east of Xianyang; Dongming was named Zhai Wang, and all slaves ruled northern Shaanxi. Therefore, later generations generally called Shaanxi "Sanqin", and Xianyang became the dividing point of Sanqin.

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Shaanxi, referred to as "Shaanxi" or "Qin" for short, is one of the provincial administrative units in China, with an as its capital. Located in the northwest hinterland of China, it borders Shanxi and Henan in the east, Ningxia and Gansu in the west, Sichuan, Chongqing and Hubei in the south, Inner Mongolia in the north, and spans the middle reaches of the Yellow River and the Yangtze River.

Shaanxi has a long history and is an important birthplace of Chinese civilization. In ancient times, it was Yongzhou and Liangzhou, the hometown of Yan Di and the burial place of the Yellow Emperor. Shaanxi has been the capital of emperors since ancient times. Among the nine unified dynasties, four (Qin, Western Han, Sui and Tang Dynasties) established their capitals in Xi 'an (Xianyang), leaving 79 imperial tombs, which are called "Oriental Pyramids". It is the origin of China people and the seat of the National Time Service Center of Chinese Academy of Sciences.

References:

Baidu encyclopedia-Shaanxi