People from the cities are banned from buying property in the countryside, and people from the countryside can’t afford city property (banks are also banned from owning country property hence no mortgages). Until recently, property was the only asset people were allowed to inherit, so there was a massive construction boom.

That’s all collapsed so you have a stagnant market and millions of unoccupied or half-finished buildings, often of such poor quality they’re falling apart.

Plenty of spaces to hide tons of money.