The implication of the moon background painting is a symbol of beauty, creating a beautiful aesthetic mood. The moon painted on the porch at the end of the west corridor can make the family feel better.
The porch is a Chinese character, and the pinyin is xuánguān, also called foyer. Refers to the turning space between the entrance of the building and the main hall. There is a concept of "hiding" in East Asian traditional architecture. The porch is a buffer between the outside and the inside of the house, separating the outside from the inside.