Cost of living in Reno, Nevada (United States) is 72% 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 343 prices entered by 36 different people.
For example, you would need at least 14,469元 ($2,089) in Reno, Nevada to maintain the same standard of living that you can have with 8,400元 in Zhenjiang.