Tell me about whether there will be a surplus of houses in the next 10 years and 20 years. Take an example of a relative's child next to me. Relatives and children, only daughter, after 85, after graduating from a university in Beijing, she stayed in Beijing to work and get married

Tell me about whether there will be a surplus of houses in the next 10 years and 20 years. Take an example of a relative's child next to me.

Relatives and children, only daughter, after 85, after graduating from a university in Beijing, stayed in Beijing to work and got married, there are 2 houses in Beijing, one big and one small. The in-laws have an only son, and there is a suite in Xi'an, and the in-laws live by themselves; the young couple later bought a suite in Xi'an, and the couple lived in Xi'an when they returned to Xi'an. Her parents have two apartments in Xi'an. So their young couple has 6 suites, they currently have a child, do not plan to have a second child. In this way, after 20 years, their children will inherit 6 houses, and he or she does not need to buy a house at all. Therefore, after 20 years, the house price is not as good as the onion, at least it is very cheap. What do you think?