1 Down syndrome, usually is caused by an extra copy of chromosome 21 (trisomy 21). Characteristics include decreased muscle tone, asymmetrical skull, slanting eyes and mild to moderate mental retardation.  Edward's syndrome, which is the second most common trisomy after Down syndrome. It is a trisomy of chromosome 18.
Guanxi describes the basic dynamic in personalized networks of influence, and is a central idea in Chinese society.
Gua sha is a common practice in Traditional Chinese Medicine (TCM), and an invaluable technique in an acupuncturistâs armamentarium. Gua sha is an ancient healing technique used by many clinicians of TCM. In this procedure, a lubricating medium, such as massage oil, is applied to the skin of the area to be treated.