Recalling the Past, the Years Are Unbearable, and I Am Dreaming

There is a house that has existed in my family since I can remember. The time when this house appears is not fixed every time, as if it is waiting for me. Every time I see that house, I always tell the people around me, but they never believe it. What I see is a classic house, while others see either an empty house or a piece of air. What is the secret of this house? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.