China ancient geomantic omen, commonly known as geomantic omen, is not idealistic knowledge, nor feudal superstition. It is a comprehensive science with China's classical philosophy "Book of Changes" as its theoretical core, including architecture, landscape architecture, geography and geomorphology, and aesthetics. Feng shui is a world event. Wealth, poverty, longevity, wealth, good fortune, misfortune, good and evil, life and death are all related to Feng Shui.
As for how many fish the landlord has, it has nothing to do with Feng Shui.