Cost of living in Haikou (China) is 10% cheaper than in Zielona Góra (Poland)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 23 prices entered by less than 5 different people.
For example, to keep the same standard of living that would require 5,000 zł in Zielona Góra you would need to make just about 4,501 zł (元8,240) in Haikou.