Bodhi root symbolizes vitality, because it grows slowly and represents strong and positive vitality. It also implies wisdom, because Sakyamuni had an epiphany under the bodhi tree, so he had an epiphany. It also means perfection, which means getting rid of 108 kinds of troubles, symbolizing that the body and mind have reached a state of silence. Skull head is also a corpse forest in the tantric Buddhism, which means that life and death are impermanent, reminding practitioners to cherish life and try their best to practice. Of course, this generally refers to the understanding of practitioners. If they don't practice, they will naturally have various understandings.
Bodhi root belongs to a kind of bodhi. It is not a tree root, but a palm seed. Bodhi root has rough surface with patterns, and its interior is white and moist, similar to ivory white color. If the bodhi root is burned, it will smell like a plant. After playing for a long time, the bodhi root disk will turn yellow-brown, and the surface will appear broken texture. Bodhi roots are divided into white and black bodhi roots, with large output and low price, so there are few fakes on the market. Because of its low price and small appreciation space, it is considered as a good product for beginners to play and practice.