The fish pond in the courtyard is suitable to be dug in the west. First of all, the white tiger position in the west belongs to gold. Metal is water, and fish live in water. Digging a fish pond in the west can enhance the effect of Feng Shui fish; , the fish pond cannot be dug in the north, because the northern basalt belongs to earth, and among the five elements, earth controls water. It is not suitable for fish to survive in the north. Even if it can survive, its Feng Shui effect will be greatly reduced.