No money how to buy?
Chinese are rich only in your mind.

I think the reason some tend to show off in public, posting fancy food or nice vacation.
They have a very good financial planning, saving and such to pull this off.

Others tend to eat warung or mamak because there isnt much middle ground for halal food.
Either cheaper warung/mamak (not cheap anyway) or expensive high class restaurant for elites.
You really wont see elites easily here.
Generally you see its easier to sell certain halal products to them, many products that not really useful but merely supporting friends or relative. There goes the money.

Looking from both side, you see why people think chinese is generally richer but it might not be the case. Just different way of spending.