The sword is not used to ward off evil spirits. How to put it?
In fact, the sword is a traditional killing tool and a self-defense weapon of the ancients. Because of this, swords always give people the impression of "killing demons to ward off evil spirits", so they are often used as town houses to ward off evil spirits. Moreover, the sword, blade or blade pattern commonly used in Feng Shui will be slightly different.
Generally, the blade lines are mostly Tai Chi or gossip images; As for the design of the blade, most of them belong to the Big Dipper. In addition, the poor in ancient times could not afford expensive swords, so they usually tied copper coins together with scissors or red lines to form swords instead.
Traditionally, if you need to use a sword on water, you will feel more or less suffocated indoors/outdoors:
For example, there are epoch-making works outside the door or outside the window, direct and gloomy scenery (such as cemeteries, jungles, hospitals, funeral homes, dilapidated houses or abandoned places). In this case, knives and swords will be hung outside the door or next to the window facing the scenery to achieve the purpose of exorcism. However, it should be noted that these swords for town houses do not need to be sharpened, but also need to see whether the hanging position matches the overall situation of Feng Shui and Qi (mathematics). This trick can be checked by a professional geomantic mathematician.
It's also said in the street that it would be better if you could find someone with great powers to show your sword. The above practices are different. Finally, if the sword used has been used as a blood sampler, its asphyxiation will be more severe, so red spikes are usually tied to the hilt to reduce its asphyxiation to the householder.