There was originally no difference, all differences are defined by humans.

In a certain rural area, a building costing 380,000 is compared to a villa in a first-tier city costing 38 million. What is the difference? Online comments: Besides the rigid value of urban population flow, urban real estate has long detached from its practical attributes; it has become, under the collusion of politics and enterprises, a tool for storing value, a financial instrument☀️, and is not much different from Bitcoin.