What is the fine-grained topic of the following text: He was one of the original students of Shi-Gong Bruce Lee and was the direct instructor of Sifu Bahram Khozairy @ IMB Academy in Torrance California; where Sifu Khozairy received his teaching certification and authorization for JKD - Jun Fan Gung Fu and Filipino Martial Arts. Only return the topic.
Teaching lineage and certification in martial arts