Cost of living in Provo, Utah (United States) is 64% 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 211 prices entered by 18 different people.
For example, you would need at least 14,256元 ($2,061) in Provo, Utah to maintain the same standard of living that you can have with 8,700元 in Zhenjiang.