Cost of living in Santa Ana, California (United States) is 88% more expensive than in Zhenjiang (China)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 191 prices entered by 17 different people.
For example, you would need at least 元17,128 ($2,697) in Santa Ana, California to maintain the same standard of living that you can have with 元9,100 in Zhenjiang.