The fewer the people, the more houses decline in value, but the crazy thing is: the core area actually rises more and faster?

Krugman won the Nobel Prize for this research; he found that: the fewer the people, the more they tend to move to the core area—Tokyo is home to 30% of Japan's population.
So, sell your old family house and move to the core city.
After reading this, I’ll help you choose a new family base.
"House Prices After the Population Decline"