It is a unique architectural form in China, some of which are placed in front of the gate and some in front of the courtyard. Its function is as a barrier in front of the building, blocking the sight of outsiders, making it impossible to have a panoramic view of the courtyard, and it has also become a place for people to stop and tidy up their clothes before entering the courtyard. It is a unique part of traditional architecture in China, especially popular in Ming Dynasty. Generally speaking, it is a shield in the gate. The display wall has the function of preventing wind and blocking the line of sight. If the wall is decorated, it will have the effect of scenery. According to the wall can be divided into one word, eight characters, against the wall and so on. From the perspective of materials, it can be divided into glass, wood, stone carving, brick and so on. Zhaobi is generally used in palaces, temples and rich families.
In the past, people thought that ghosts would visit their houses constantly and build a wall to block the path of ghosts. Another view is that Zhaobi is a unique architectural form in China influenced by Feng Shui consciousness, which is called "shadow wall" or "shadow wall". Feng shui pays attention to guiding qi, and qi can't go straight into the hall or bedroom, otherwise it will be unlucky. The way to avoid air rush is to put a wall in front of the house. In order to keep the "air unobstructed", this wall can't be closed, so the architectural form of facing the wall is formed.