Cost of living in Venice (Italy) is 47% 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 164 prices entered by 13 different people.
For example, you would need at least 12,188元 (€1,553) in Venice to maintain the same standard of living that you can have with 8,300元 in Zhenjiang.