Cost of living in Olsztyn (Poland) is 6% cheaper than in Zhenjiang (China)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 89 prices entered by 5 different people.
For example, to keep the same standard of living that would require 9,500元 in Zhenjiang you would need to make just about 8,909元 (4,867 zł) in Olsztyn.