In ancient times, it was said that ghosts would pass by the house, and ghosts only walked in a straight line without turning, so a wall was built at the gate of the yard to keep the ghosts out. Building a viewing wall can give you psychological comfort.
2, can be separated inside and outside, blocking the line of sight, to meet the needs of etiquette.
Architecturally speaking, zhaobi can block the space, hide people, things and things in the courtyard, and play the role of blocking the line of sight and protecting privacy. According to "Xunzi Outline", "The emperor is outside the screen, the princes are inside the screen, and the ceremony is also. Outside the screen, I don't want to look outside or inside. " This implicit and secret state of mind is not only the requirement of the ancient etiquette system, but also the architectural reflection of our introverted personality in China.
3. The influence of airflow on the house can be adjusted to meet the needs of geomantic omen.
The ancients believed that strong winds going straight into the hall were not only bad for hiding wind and gathering gas, but also bad for the owner. In order to buffer the airflow and make the air around the screen wall flow, it is necessary to install a wall inside or outside the gate, which can play the role of "feng shui" such as adjusting wind resistance, exorcising evil spirits, keeping cold and warm, and praying for happiness. Therefore, setting up a wall to regulate the air flow conforms to the requirements of geomantic omen of ancient buildings in China, that is, "Qu Youqing" and "Looking forward and leaning back".