Cost of living in Shenzhen (China) is 50% more expensive than in Zhengzhou (China)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 297 prices entered by 40 different people.
For example, you would need at least 16,454元 in Shenzhen to maintain the same standard of living that you can have with 11,000元 in Zhengzhou.