One: New buildings, developers are still selling new houses. If the purpose of buying a new house is to sell it at a higher price to make money, it will definitely be more expensive than a new house. Naturally, no one bought it, so I won't sell it for the time being.
Two: people who buy houses in the community are used to live, and no owners sell second-hand houses for the time being. Or the house price is much lower than when the new house is sold, and no one wants to sell at a loss without urgent money.
Houses are used for living, not for speculation, and the reduction of second-hand houses is not a bad thing. There is no second-hand house in this community, so you can go to other communities to have a look.