Fish tank is one of the commonly used items in modern family decoration. Using fish tank to "divert water into zero hall" can resolve the crisis of fierce party in the family. However, the placement of fish tanks must be cautious. First, it should not be too high, which will cause the shower to overflow. Secondly, the fish tank should not be too big. Too much water and too deep will also produce yin, which will bring harm.
In geomantic omen, copper gourd is used to subdue demons, and people think it can block Shaqi.
Copper gourd is made of copper in imitation of gourd shape. Its material and roundness make it belong to gold, which can dispel evil spirits, but evil spirits bring diseases and bad luck in geomantic omen.
In ancient times, many Taoist priests hung copper gourd on their bodies and painted gossip on the bottom or lid of the gourd to increase the effect of exorcism. Later, copper gourd, with a small mouth and a big belly, became a tool to subdue demons. It was easy to get in and not easy to get out.