Which direction does the palace gate face?

Since ancient times, the palace gate has been facing south, which is related to the operation of qi from the perspective of geomantic omen. Traditional Chinese medicine says that the north corresponds to the kidney, which is the main storage, and the south corresponds to the heart, which is the main distribution and the main divergence. The ancients sat facing south, and the north gate could not be opened because they had to hold their breath, and the south gate had to be released to balance.