Gua sha Gua sha (刮痧; guāshā) is abrading the skin with parts of clean jade, bone, animal tusks or horns or smooth stones; until eventually pink places then bruising cover the area to which it is completed. In TCM, the Lung channel corresponds to emotional grief and be concerned, https://damienbq6a9.ageeksblog.com/26259562/not-known-details-about-chinese-medicine-body-types