The World Inequality Database. I'd do a TL;DR, but I'd be reinventing the wheel.
It's important to know this is about wealth, while @avidamoeba@lemmy.ca is going by income. If you're out to defend China, you could say sure, they own less and less but the government will look after them, and make sure wages stay high. If that's a good bet in light of history is another question.