There is a pit in the northwest, how to solve Feng Shui?

In geomantic omen, the north, northeast and northwest are collectively called Xuanwu House, which is a noble, patron, elder and healthy master. If there are cracks or pits in these directions, bad things will happen in these areas. In the eight diagrams, the west and the north are dry, and the dry divination represents the father and the Lord, as well as the official career and official position. The dry position should be full, complete and square, and the pit is of course fierce. But if the pit is small, don't mind too much, just fill it up. If it is too big to fill, you can put a pair of bronze puppies on this auspicious day to solve it. Master He Shengbao, Guangzhou Yipin Feng Shui, will give a free topic every day. )