The hall in a building should ideally face east or south. This orientation is based on the principles of Feng Shui, an ancient Chinese philosophical system of harmonizing everyone with the surrounding environment. According to Feng Shui, the east and south directions are considered to be the most auspicious for attracting positive energy and prosperity. The east is associated with the rising sun, symbolizing new beginnings and vitality, while the south is linked to the element of fire, representing passion and warmth.

Data from various studies and historical records support the preference for east and south-facing halls. For instance, a study by the Chinese Academy of Sciences found that buildings facing these directions tend to have better natural lighting and ventilation, which can enhance the overall well-being of the occupants. Additionally, the ancient Chinese text "The Book of Changes" (I Ching) suggests that the east and south directions are aligned with the flow of positive chi, or life force, which is crucial for creating a harmonious living environment. Furthermore, historical buildings in China, such as the Forbidden City, often exhibit this orientation, reflecting the cultural preference for these auspicious directions.