It is recommended not to choose mountain apartments as much as possible. Although all the buildings built now have benzene plates to prevent cold, and the sales will say that the heating is better, it turns out that the temperature will be lower than other apartments. If you must choose an apartment on the mountain, choose Dongshan, because the temperature of Dongshan apartment will be higher than that of Xishan, and it will be sunny. As for Feng Shui, I really don't know much about it. Just don't have too many doors in the living room, which may not be conducive to family harmony and furniture placement.
These are my suggestions, and I sincerely hope I can help you.