Considering the decorative factors of the teahouse, in architectural design, the elevation of the building is generally about 4 meters, so that the elevation that can be seen after indoor decoration can be maintained at 3.00-3.20 meters. This height is similar to human comfort.
In addition, the height is also related to the single room area of the teahouse, and a small room can localize it.
The height mentioned above means the height from the ground to the top. I don't know if the foundation you are talking about is this thing.