Land is a weird asset. We need it to be affordable because everyone needs somewhere to live. But for many people, real estate is also their biggest store of wealth — a kind of national piggybank that fuels both personal fortunes and broader economies. Nowhere is that tension sharper than in China, where housing affordability remains a major challenge even as real estate has been a huge driver of wealth for households and companies alike. China’s policymakers have now spent years trying to let th