According to "Compendium of Materia Medica", Kuai is a big shell in the sea, with stripes on its back, which is like a groove after a wheel passes, hence the name Che Qu. Because the shell is like jade, it is often mistaken for jade, so the stone edge is added.
From then on, things made of white corals and shells are usually called dragonflies.
The ancients thought that the rare and pure cockroach, pure white color is a symbol of cleanliness and solemnity, and has a strong magnetic field.
It can eliminate disasters and ward off evil spirits, calm the mind and soothe the nerves, and finally achieve the effect of strengthening the body.
Therefore, it is often processed into round beads or beads, which is convenient for wearing or practicing, and is a treasure to eliminate disasters and block difficulties.
The symbolic meaning in Buddhism is that self-nature is as bright as treasure.
If you can show your light like a treasure, you can shine everywhere, and your own achievements will make others.