What do people mean by joking that milk powder is expensive?

What you want to ask is what others mean by joking that milk powder is expensive? Laugh at your lack of money.

The milk powder here is not milk powder in the traditional sense. It means that when the star that fans are chasing wants to release an album or endorse a product, they begin to do some tasks for the star, which is called milk powder task. The act of making money to buy a star's album or surrounding or endorsement products is called making milk powder money. Others joked that milk powder is expensive, that is, there is no money to drink milk powder and you can't vote for a star.