Since ancient times, jade has held a paramount position in Chinese culture. It is not only a symbol of wealth and power but also the embodiment of a gentleman's character. However, beneath its many accolades, jade possesses another lesser-known identity: a medicinal stone. When we open Li Shizhen's monumental work, "Bencao Gangmu" (Compendium of Materia Medica), from the Ming Dynasty, we discover that this gentle stone was endowed with miraculous medicinal properties, reflecting the ancients' profound understanding of life and health.
The story begins in the distant prehistoric era. During the Neolithic period, early humans, in the process of mining and carving jade, might have accidentally discovered that certain jade powders or water soaked with jade had unexpected therapeutic effects on the body. This simple experience was passed down through generations, gradually evolving into a unique theory of jade's medicinal uses. The "Shanhaijing" (Classic of Mountains and Seas), compiled during the Warring States period, contains records such as "consuming it prevents aging and hunger," which, though exaggerated, reveals jade's status as a "celestial medicine" in the minds of the ancients. By the Han Dynasty, the emergence of jade burial suits (jinlü yuyi) pushed the concept of jade's ability to "preserve the body from decay" to its extreme. Although modern science has disproven this efficacy, it reflects the ancients' deep belief in the mysterious power of jade.
"Bencao Gangmu," as a comprehensive collection of ancient Chinese pharmacology, systematically compiled and documented the medicinal value of jade. In the "Stone Section," Li Shizhen meticulously listed various effects of jade, such as "removing heat from the stomach, relieving asthma, expelling evil, alleviating distress, moistening the heart and lungs, aiding the voice, nourishing hair, nurturing the five organs, calming the soul, clearing blood vessels, benefiting the ears and eyes, enlightening the mind and qi, and prolonged use lightens the body and prolongs life." He even subdivided jade into "true jade" and "false jade," indicating the different medicinal focuses of various types of jade. For instance, he mentioned that "jade powder" could be used for "clearing heat and detoxifying, calming fright and settling the spirit," while "jade spring" (water soaked with jade) had the effects of "generating saliva and quenching thirst, and nourishing the complexion." These records were not baseless but built upon long-term observation and practice.
So, how did the ancients incorporate jade into medicine? The most common methods were "jade powder" and "jade spring." "Jade powder" involved grinding jade into extremely fine powder for internal consumption or external application. It is said that Yang Guifei, a concubine in the Tang Dynasty, often applied jade powder to her face to achieve smooth skin. "Jade spring" involved soaking jade in water or boiling water with jade artifacts for drinking. The ancients believed that the trace elements contained in jade would dissolve in the water, thus exerting their medicinal effects. Additionally, jade was fashioned into pillows, bracelets, and other objects, with the aim of achieving health benefits through long-term contact, which was the precursor to modern "jade therapy."
From a modern scientific perspective, the medicinal value of jade is not entirely superstitious. Contemporary research indicates that certain natural jades indeed contain beneficial trace elements such as calcium, magnesium, zinc, and selenium. Under certain conditions, these elements might have a positive impact on the human body through skin contact or small intake. For example, the physical properties of jade give it good thermal conductivity and heat retention. Wearing jade can promote local blood circulation and relieve fatigue. Furthermore, the gentle touch and unique magnetic field of jade might also have a positive psychological suggestive effect, leading to emotional soothing and mental tranquility, which aligns with the "calming the soul and enlightening the mind and qi" mentioned in "Bencao Gangmu."
However, we must also clearly recognize that jade is not a panacea for all ailments. Its medicinal efficacy is far less definite and potent than that of modern medicines. The ancients' reverence for jade primarily reflected their awe of natural beauty and their simple desire for health and longevity. The cultural significance of jade far surpasses its medicinal value. It embodies the Chinese nation's moral pursuit of "a gentleman comparing himself to jade," the yearning for the aesthetic pleasure of "jade-like smoothness and roundness," and the aspiration for a beautiful life symbolized by "golden and jade bonds."
In modern society, the medicinal function of jade has gradually receded to a secondary position, but its cultural value remains timeless. We wear jade ornaments not only for aesthetic appeal but also as a continuation and recognition of traditional culture. When we touch a piece of warm jade, we seem to feel the wisdom and emotions of the ancients from thousands of years ago. It reminds us that while pursuing material civilization, we should pay more attention to physical and mental harmony and return to our natural essence. As recorded in "Bencao Gangmu," jade is not just medicine; it is also a carrier of the Chinese national spirit, nourishing our lives and our culture with its unique gentleness and resilience.