About the Author
Jin Yunting was a student of Shang Yunxiang and Sun Lutang and grand-student of Li Cunyi.
John Groschwitz began his martial arts training in 1995 with the study of Northern Shaolin. He began training in Xingyi Quan in 1996 and is currently an Assistant Instructor in Xingyi with the North American Tang Shou Tao Association. In addition to continuing study in the above arts, he has also studied Lanshou Quan, Gao-style Bagua Zhang, Water Boxing, Yang-style Taiji Quan, and various systems of Qi Gong, in the U.S. and Mainland China.