Certified instructor is the person who has shown his ability in both teaching and understanding of the traditional Kung Fu. To obtain the instructor's certificate, one has to take official tests, which is recognized by both Sifu Jason Tsou and Wutan Los Angeles.
Phunsak Thiennviboon began his Chinese martial art training through studying Yang-style Taijiquan in Bangkok, Thailand from 1992 to 1996 (about 3 1/2 years). In 1996, he moved to Los Angeles for his graduate study (MS & Ph.D.) at University of Southern California (USC) which he graduated with Ph.D. degree in Electrical Engineering in 2002. Since December 1996, he has trained Northern-style Chinese martial arts under Sifu Jason Tsou. Through Sifu Tsou, he had many opportunities to meet many well known and knowledgable Chinese martial art masters. Currently, he considers Bajiquan, Piguazhang, Baguazhang, Taijiquan and Xingyiquan with related weapons as his major styles in Chinese martial art. Since 2007, he have started exploring other martial arts such as Western and Japanese martial arts by training from various schools. He is currently training in Kyudo (Japanese archery) and Ryabko Systema (Russian martial art). In August 2008, he was accepted as one of Sifu Tsou's disciples in Wutan lineage and he was accepted as one of Sifu Tsou's instructors since September 2005. He is also accepted as an instructor in training from Ryabko Systema since August 2010.