It is understood that over 20% of Japan's land does not have anyone who can contact immediately. In the past, each piece of land was precious as the Japanese population expanded on these small islands. Now, as the population decreases, more and more land has no chance of being used. In the future, China will also enter a seriously aged society. Nowadays the asset prices caused by population and popularity will inevitably share the same fate with those of today's Japan and there will be profound adjustments in the value of assets.