How to hang the guqin? Why?

Qin, like people, would rather stand without touching it. You can use cement nails. There are also accessories for hanging guqin on the Internet, so you can search. From the perspective of feng shui, the air fluctuates from five tones to intangible to yin and yang to Tai Chi. Therefore, the ancient layman said, hang a piano or a sword. What we modern people think is superstition, but in fact it is scientific in ancient people's cognition.