A tool recommended that all qigong practioners should have.
The Gu Zhen Pan, can be used to massage the bodies acupressure points, which adds energy to the body meridians which are generated by the 4 magnetic rocks, and 1 meteor rock in the middle. It could also be used very beneficially during meditation, while on the Ren Mai (R1)[Hui Yin] point. This will circulate the body's qi, and prevents losing too much qi/energy. The yang energy also increases.