Long–time Chen practitioners David Gaffney and Davidine Siaw-Voon Sim are authors of the best selling Chen Style Taijiquan: The Source of Taiji Boxing. After numerous trips to Chenjiagou to train in the traditional manner, both have been awarded Instructor’s certificates by the Chenjiagou Taijiquan Martial Arts School. They continue in their ongoing pursuit to research, preserve and promote the true face of this ancient discipline.