| 1960-1962 | Operated an injury clinic in Medan, Sumatra. |
| 1962-1963 | Practised injury medicine in Hong Kong. |
| 1967-Present | Teaches medical qigong and practises qigong therapy at the Academy of Shaolin System in Redwood City, CA. |
| 1994-2004 | Teaches qigong and continued education for registered nurses, provided by American College of TCM., in qigong classes organized by City of Palo Alto. |
| 1996 | Presented a paper on “Using Wai Qi and Qigong training to treat asthma by affecting the adreno-cortical hormone, cAMP and cGMP” at the World Medical Qigong conference, in Beijing, China. |
| 1996 - 2003 | Teaches Medical Qigong and continued education for licensed acupuncturists and registered nurses, provided by American College of Traditional Chinese Medicine (TCM), classes organized by City of Palo Alto. |
| 1997 | Taught Qigong for SRI International, Menlo Park, CA. |
| 1997 | Guest lecturer for the California Institute of Integral Studies Ph.D. class. |
| 1997 | Medical Qigong instructor for the health improvement program at the Stanford Center for Research in Disease Prevention, Stanford University School of Medicine. |
| 1998-present | Teaches qigong
classes organized by Late Dr. Jennifer Prongos L.Ac, San Francisco, CA |
