Cost of living in Chengdu (China) is 37% cheaper than in Palma de Mallorca (Spain)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 596 prices entered by 59 different people.
For example, to keep the same standard of living that would require €3,200 in Palma de Mallorca you would need to make just about €2,026 (元15,863) in Chengdu.