Porch Feng Shui: Why does the porch open inside and outside?

In geomantic omen, "Yang Zhai is the first gate and the main entrance is the air inlet", which is generally beneficial for air to enter from the entrance door, that is to say, it is beneficial for the geomantic omen of the house to enter from the outside, and generally an airflow will be formed in the process of opening the door. If you experience it carefully, you will find that the indoor airflow is inevitably not as strong as the outside. The room has four walls, which can't form natural feng shui. If the outdoor air flow is strong and the door opens inward, the air will naturally flow into the house, making the house prosperous and the fortune smooth. So generally speaking, the entrance cabinet is set up in the entrance to cater to the design of geomantic omen. On the other hand, if the entrance door is open to the outside world, the external airflow is strong, it is not easy to open the door, and the resistance is large, which means bad luck and poor fortune development. Moreover, if the outdoor wind is relatively strong, the door that opens outward is prone to violent collision with the wall, resulting in damage or even falling off of the entrance door, which is easy to cause harm to people or things, which is a great disaster for home feng shui.