Zhangqiu (China) is 15 times larger than Orange, California.
Area: 73 km2 calculated
The city of Orange is located in Orange County, California. It is approximately 3 miles north of the county seat, Santa Ana. Orange is unusual in that many of the homes in its Old Town District were built prior to 1920. Wikipedia
Area: 1,105 km2 calculated
Zhangqiu is a county-level city under the jurisdiction of Jinan, the capital of Shandong province, People's Republic of China. Wikipedia