continuing education

On Gua Sha:

http://en.chinaculture.org/info/2013-04/25/content_456628.htm
https://www.pacificcollege.edu/news/press-releases/2015/05/05/the-science-of-gua-sha

On Facial Gua Sha:

https://www.lanshin.com/tutorials
https://www.nefeli.com/