Zhongxiang (China) is 4.1 times larger than Heshan, Guangdong.
Area: 1,072 km2 calculated
Heshan is a county-level city of Jiangmen City in the southern part of Guangdong Province, China with a total land area of 1,108.3 square kilometres and a population of 360,000. If migrants this figure rises to around 550,000 persons residing within the city's borders. Wikipedia
Area: 4,420 km2 calculated
Zhongxiang is a county-level city of Jingmen, central Hubei province, People's Republic of China. The name Zhongxiang means "Blessed with propitious omen", and was given to the city by Emperor Jiajing in the Ming Dynasty. Zhongxiang is a well-known historical and cultural city in China. Wikipedia