At the turn of the Western Zhou Dynasty and the Eastern Zhou Dynasty, Zheng Dong moved to Zhengzhou, where he was still "chopped and coexisted". Zheng is only the center of the Central Plains, and it was so desolate at the beginning of the Eastern Zhou Dynasty. Zheng's east neighbor is Song State, which is a part of Wang Ji of Shang Dynasty. By the end of the Spring and Autumn Period, there were still six cities between Song and Zheng, none of which were occupied by the two countries. Later, a traitor of the Song Dynasty went to Zheng, where Zheng people built several cities. As a result, there was a war between the two countries, and the result was still empty. There is a capital of song dynasty in the east, to lankao. There are Xuchang in the south, Dayu in the south, Tiger Prison in the west and Yellow River in the north. It is about 200 li in vertical and horizontal directions: east longitude1118, north latitude 34-35, and there is a vast Huanghuai plain in the southeast. Zhengguo area has a warm temperate continental climate with four distinct seasons, and the annual average temperature is14.4 C. It is the hottest in July, with an average of 27.3°C；: ; The maximum Leng Yue 1, with an average of 0.2℃; ; The average annual rainfall is 640.9 mm, the frost-free period is 220 days, and the sunshine time is about 2400 hours. Large and small rivers in the territory belong to the Yellow River and Huaihe River, among which the Yellow River flows through Zhengguo section.