What is the name of the instructional film recorded by the trainer of Wan Kam Leung?
Wong Shun Leung Wong Shun Leung (; 8 May 1935 – 28 January 1997) was a Chinese martial artist from Hong Kong who studied Wing Chun kung fu under Ip Man (葉問) and was credited with training Bruce Lee. In interviews, Wong claimed to have won at least 60, and perhaps over 100, street fights against martial artists of various styles, though these numbers cannot be independently confirmed. Due to his reputation, his students and admirers referred to him as 'Gong Sau Wong' (講手王 or 'King of Talking Hands'). Wong recorded one instructional film entitled "Wing Chun: The science of in-fighting".
Jim Fung Fung Chuen Keung (馮傳強; 16 May 1944 – 18 March 2007), known as Jim Fung, was a practitioner and teacher of Wing Chun kung fu and founder of the 'International Wing Chun Academy'. He had been training under his master, Tsui Seung Tin (徐尚田), since 1960. Tsui, was one of the students of Ip Man (葉問).