Jade in China has a long history of health preservation. According to Shennong's Compendium of Materia Medica and Compendium of Materia Medica, jade has many functions, such as "clearing away heat, relieving annoyance, helping voice and moistening throat, nourishing hair, nourishing five internal organs, calming nerves, dredging blood vessels and clearing eyes and ears". Jade is not only used for wearing, playing and massaging, but also for eating jade chips. Some scholars believe that there are many ancient jade articles, which are rare in the world. This may be related to the popularization of Taoism in Han Dynasty and people eating jade chips. It is estimated that many ancient jade were mashed and eaten by the ancients.

Yude maintenance

1 to avoid collision with hard objects. Jade pieces are easy to crack after collision. Sometimes, although the cracks are invisible to the naked eye, there are dark cracks on the jade surface, which greatly damages its perfection and economic value.

2. Jade articles should avoid sun exposure. Prevent the texture and color of jade from being affected.

3, avoid chemicals, chemicals will bring some damage to jade, such as various detergents, soaps, pesticides, cosmetics, perfumes, hairdressing agents, etc. If you accidentally touch it, wipe it clean in time to avoid damage to jade.

Baidu Encyclopedia-Emerald