Changge is a county-level city under the administration of the prefecture-level city of Xuchang, in the central part of central Henan Province, China. In the Han dynasty, it was known as Changshe. It ranges in latitude from 34° 09' to 34° 20'N and longitude from 113° 34' to 114° 08'E. According to the sixth national population census in 2010, Changge's population is about 687,081. It borders the province capital Zhengzhou to the north, the ancient capitals Luo Yang to the west and Kaifeng to the east, the city is about 21.4 kilometers from the north and South, and 51.9 kilometers east–west.

Xuchang is a prefecture-level city in central Henan province in Central China. It is bordered by the provincial capital of Zhengzhou to the northwest, Kaifeng to the northeast, Zhoukou to the east, Luohe to the southeast, and Pingdingshan to the southwest.