True crystals are condensed from underground strata under high pressure and long geological time, and have the function of preventing evil spirits. It is generally believed that the natural frequency of crystal can interfere with the accumulation of Shaqi.
There is a lamp hanging directly above the bed, which makes people worry that it will fall. This installation is not recommended in the book.
Synthesis: If it is a real crystal, if the installation is stable, then there is no need to shift it.