In 2008, the population density of Zhao in Shandong Peninsula and Huaihe River Basin was the highest, reaching more than 7.5 people/square kilometer, and the population of Zhao in some areas exceeded 1 1 person/square kilometer. Secondly, there are more than six Zhao people per square kilometer in Henan, Hebei, Northeast China, northern Anhui, northern Jiangsu, central Shaanxi and northern Sichuan.
It can be seen from the distribution density diagram of Zhao that the area with the highest density (more than 6 people /km2) only accounts for 16.9% of the total land area, and the population of Zhao is about 1 1.76 million. 4.5-6 people /km2, accounting for 13.7% of the land area, with a population of about 7.04 million. 1.5-4.5 people /km2 accounts for 26.8% of the total area of China.
Source of surname:
When Zhou Wangxiao succeeded to Zhou Youwang, Zhao Shu, the seventh grandson of Zong Fu, left Zhou State for Shi Jin because of Zhou Youwang's despair. Since then, Zhao's descendants have become ministers of the state of Jin, holding the power of the state. In the early Warring States period, Zhao, together with Han and Wei, defeated Zhi and carved up Zhi's fief. Later, Zhao Jingzi Hou, Xiang Zihou, Wei Wuhou and Ai Hou joined forces to split the State of Jin and establish the State of Zhao.
When he arrived at his grandson Zhao Ji, Ren Wei, the king of Zhou Dynasty, officially recognized his identity and listed him as a vassal of the Korean and Wei families. In 222 BC, Zhao was destroyed by Qin. Because they are the common ancestors of Qin and Zhao, they are surnamed Zhao, and Qin is also surnamed Zhao. For example, Qin Shihuang Ying Zheng was also called Zhao Zheng. Qin also regards Zhao as his family, and there is a saying called "".