Only those listed on this site are currently certified to teach Tiek Soo Chang Ch'uan Fa and are recognized by the American Tiek Soo Chang Association and the World Dong Soo Chang Federation under the Roy Branch of the Lee Hombu. All students of any black belts claiming to be of the Roy Branch not listed here that became students, continued training, or ranked post-2012 are not recognized or certified by either organization and ranking is not valid. If you fall under this category and want to be recognized, you need to contact the Regional Administrative Director, Sifu Matthew J. Nielsen of the Dallas Chinese Boxing Center for information and requirements-940-493-0293