Dr. Richard Tan was an Engineer by Education in the United States. In his 50's he was laid off. In order to practice Acupuncture in the United States, he was forced to go to a three year school which paled in comparison to the practices he was familiar with from four generations of Chinese Medical Healers. After getting "certified" by a corrupt US system. he setup shop in Southern California. His "Balance System" is a system of Acupuncture that uses points mostly between the elbows and finger tips and knees to feet enabling acupuncture in a sitting position without disrobing. He could treat as many as 10-14 patients an hour for anything other than Emergency Medicine. His system, which he honed here in the US is now being taught in Chinese Acupuncture Schools. Think about the threat such a system represents to The AMA , Hospitals, and Big Pharma. He taught seminars to people who traveled from around the world to learn from him. The Bulk of Ric Valentine's Acupuncture practice is based on Tan's "Balance System". One of Dr. Tan's prior students is now teaching seminars to carry on his teachings.
https://www.pbs.org/wgbh/theymadeamerica/whomade/kildall_hi.html