2. Ask the salesperson for the floor plan and look at the orientation of the window, whether it is the main room or not. See if there is a higher building in front of the floor you want, and how far it is, so you can save light.
3. Ask them about the supporting facilities of the real estate, such as schools, shopping centers, stations and so on.
4. If it is an auction house, look at its "five certificates". You will know which five certificates are specific. It slipped my mind. I suggest you buy an existing home, because in the current property market, buying an existing home is a trend, and seeing is believing.