Jiaxing (China) is 30 times larger than Moreno Valley, California.
Area: 133 km2 calculated
Moreno Valley is a city located in Riverside County, California and is part of the San Bernardino-Riverside Metropolitan Area; the city is 19 miles south of downtown San Bernardino, while Riverside lies directly to the west. Wikipedia
Area: 4,059 km2 calculated
Jiaxing is a prefecture-level city in northern Zhejiang province, People's Republic of China. Lying on the Grand Canal of China, Jiaxing borders Hangzhou to the southwest, Huzhou to the west, Shanghai to the northeast, and the province of Jiangsu to the north. Wikipedia