After Qin annexed six countries, its territory reached the south of the Yangtze River basin. At the beginning of the Qin Dynasty, the Huns attacked and collected the Hetao in the north, and the soil led 500,000 Qin Jun to pacify Baiyue. The territory expanded rapidly, reaching about 3.4 million square kilometers. The prosperous territory starts from Liaodong in the east, reaches the plateau in the west, reaches Lingnan in the south and Yinshan in the north, which laid the foundation for consolidating the Han land in the Western Han Dynasty.

Since the Spring and Autumn Period and the Warring States Period, the productive forces have developed rapidly, the population has increased greatly, and the vassals of various countries have made great efforts to expand their territories, and the activities of the Huaxia nationality have expanded extremely rapidly. On this basis, the territory of Qin after reunification has reached 20 provinces and regions including Shaanxi, Gansu, Sichuan, Yunnan, Guangxi, Guangdong, Fujian, Zhejiang, Jiangsu, Shandong, Liaoning, Inner Mongolia and Ningxia, with a population of more than 20 million.

Because there is no geographical record in Historical Records, the only official record of the Qin Dynasty, there is no single reliable source for the administrative divisions of the Qin Dynasty. In addition to the 36 counties recorded in historical records, there are 40 counties and 48 counties.

According to the archaeological discovery of Liye ancient city, there was still "Dongting County" in Qin Dynasty. Whether there are counties in central Guizhou is a controversial topic. In 2008, according to 2098 precious bamboo slips of China, Yuelu Academy found evidence of two new counties outside the known 48 counties of Qin Dynasty.

One is called Zhouling County, and the other is called Qinghe County (see Juye County Records in Ji Qinghe Village, Zhang Biao Township, Juye County, East Province). In the process of rescue, there are bamboo slips in A Qin engraved with the words "Bing Chen Shuo, the southern county chief of Jiabao, Zhouling County", and "Zhouling Shou" and "Zhouling Shou" have appeared at least three times.

Baidu Encyclopedia-Qin Dynasty-