Each Gua Sha plate is crafted from the opulent Bian stone, which formed over 65 million years ago when a meteor collided with a mountain in ancient China.This extraordinary stone, known for its dense composition of over 40 minerals and trace elements, has been revered since antiquity for its remarkable properties.The use of Bian stone as a healing technique dates back to the 3rd millennium BCE. Bian stone therapy is one of the first of four techniques in Huang Di Nei Jing (黃帝內經), the most important ancient text that has been treated as a fundamental doctrine source for Traditional Chinese Medicine.Bian stone's historical significance lies not only in its age but also in its ability to emit ultrasonic pulses, far-infrared waves, and negative ions. These natural phenomena, recognized for their anti-aging and health benefits, have been harnessed by generations past for healing and rejuvenation.