Not much about accessories. As far as medicine is concerned, the earliest written record about the medicinal properties of amber comes from the works of Hippocrates (460-377 BC), the father of medicine. He wrote in the book: "A string of amber beads is tightly wrapped around the neck with a thin belt or string, which has played a role in relieving pain in some cases of severe headache, pharyngitis and neck pain. Wearing amber bracelets is beneficial to patients with rheumatism and arthritis, and can also reduce fatigue and fatigue. A similar therapeutic effect can also be obtained by rubbing a fairly large amber block on the body. " When Sun Simiao was practicing medicine in Tang Dynasty, amber powder was developed with amber. He thinks amber can dissipate blood stasis, stop bleeding, soothe the nerves and treat fright and insomnia. "This is the power of amber, a magical medicine." Li Shizhen, a physician in the Ming Dynasty, also described the medicinal properties of amber in detail in Volume 37 of Compendium of Materia Medica: amber is sweet, flat and non-toxic, and is mainly used for calming the heart, improving eyesight, stopping bleeding and promoting granulation.