Mary Ann was a senior student of Dr. Steve L. Sun, a 10th degree Martial Arts Master of both internal and external Chinese martial arts.  She studied with Dr. Sun for over 20 years   Although Dr. Sun was her primary instructor in Yang Cheng Fu Traditional Tai Chi, she has also studied  with Liang Shou Yu, Yang Jwing Ming, Yancy Orchard, W.C. Bey and several other Masters of the Internal Martial Arts.  She has studied QiGong, Yang Style Tai Chi, Nei Gong, Yin Fu Bagua and Magua Bagua.  Since the passing of Dr. Sun, Laoshi Mary Ann and Laoshi Frank (Wolek) have continued the training of students at the Siu Lum Academy. 

Jeffrey has studied Yang Style Tai Chi Chuan for over 30 years. He began studying under Grand Master Dr. Steve L. Sun in 2005 and has continued at Siu Lum Academy. In 2013 he began study in Magua and Yin Fu Bagua Zhang under Sifu W.C. Bey.

Jeffrey has sought out Masters to broaden his education in hand as well as weapon forms, medaling in national as well as international competitions. In 2018, he was a member on the U.S. Kuo Shu National Team that competed in the 6th World Kuo Shu Championship Tournament, receiving a Silver Medal in Bagua Zhang hand form. Notable Masters have been Yang Jun, Yang Jwing-Ming, Jesse Tsao, Paul Ramos and Joe Varady.

He continues his own study as well as teaching hand and weapon forms at Siu Lum. Jeffrey also heads the Tai Chi for Health programs offered at the Academy.