Sifu Kisu is a master of Northern Shaolin (Bak Sil Lum) Kung Fu. Through his teacher, Master Ken Hui, Kisu belongs to the lineage of Grandmaster Ku Yu-Cheung (Gu Ruzong), one of the most respected kung fu teachers of the early 20th Century and the Chief Instructor for Northern Shaolin at the founding of the Central Guoshu Institute in Nanjing.Throughout his life he has worked as an executive protection specialist, stunt man, and martial arts coordinator in the entertainment field for many years. He is most famously known for being the Chief Martial Arts Director and consultant for the animated series Avatar: The Last Airbender and The Legend of Korra.