If you understand why ancient city gates open inward, you will understand the inner window!

There is a big difference between ancient Chinese cities and today's cities, the most obvious one is the city wall and the city gate, among which the city gate has a very interesting phenomenon, no matter which dynasty and which generation, almost all of the gates are opened inward, few of them are opened outward. Why?

In fact, there are two reasons why the gates of ancient cities turned inward:

First of all, in times of war, when two armies are fighting, they have both sides, and the gates of the defending side must be strong. However, the ancient city gate is different from the modern door. It is not installed on the door frame, but inserted on the inside and bottom of the door frame, the inner wall of the house "door hinge", where the "door hinge" side, the door should be opened to which side.

Obviously, if the door is opened outwards, the "door hinge" is exposed on the outside, and the enemy can easily remove the door, leaving the gate as a dummy. In addition, once a war broke out outside the gate, soldiers had to close the door outside the city, which was no different from a living target. The danger level of opening and closing the door soared!

Secondly, if it is in peace time, the gate to the outside open, then the perennial feng shui sun is inevitable, but the ancient gates are mostly made of wood, such "destruction", I am afraid not wait for the enemy in place, the gate itself will not adhere to.

The inner gate is placed in the gate of the city wall, so there will be no such trouble, and it can greatly extend the service life of the gate.

I have to say, from every ancient life tips, you can feel amazing wisdom, worthy of thousands of years of culture.

In modern society, there is also an architectural framework with the same principle as the ancient gate, which is the exterior window of the building. The external Windows of the building are classified by opening mode, which can also be divided into internal and external opening. Similarly, the Windows we recommend more are also internal opening Windows.

The service life of the external window will be greatly shortened because it is opened outwards, exposed to the sun, rain and wind erosion, especially the hardware part. After the damage, the overall performance of the doors and Windows will be greatly affected. When the window is opened, there is even the risk of falling. The inward-facing Windows, on the other hand, are not only safe and durable, but also much easier to clean!