In China it's directly tied to you eligibility to nearly all local civil services, since something like 60% of the condo price goes to local government in the form of land sales (70 years rental actually) plus taxes, not to mention the mortgage rate from predominantly state-owned banks doubles that price again.

It's state-owned condo cartel, naturally, prices just keep skyrocketing, hence the "6 wallets for a down payment (the couple and their parents)" meme, but they'll just blame the greedy capitalist developers like Evergrande.

So combining the two factors, buying at least one condo is a prerequisite for marriage now.