Moreover, at that time, the ancients still thought that the home was brilliant, so the door to the window, the air flow was particularly fast, and the home side would not accumulate wealth, so the door to the window side would suffer, that is to say, the air flow on the door side was particularly fast, and people might suffer some health damage and financial losses.
Going door to door will hurt people, that is to say, don't point your door at someone else's door, because we can see it under construction in both cities and rural areas, and rarely see it. When I opened the door, I saw someone else's door, which was particularly uncomfortable.
So even in the city, we always close the door, and we sleep on the screen of our own porch, because opening the door will let others know that the overall pattern of our home is particularly uncomfortable. So there is an old saying that door to window, door to door. His main purpose is to say, don't let the air in your home flow too fast, and don't let your door face other people's doors. As soon as we opened the door, people saw that their own situation and others' situation were special.