Stephen Au Kam Tong is a Hong Kong actor for TVB (2000–present) and a former actor for ATV (1990–2000). He is mainly known for his role of David Mo in TVB sitcom "Best Selling Secrets" and of Yim Yue Dai in TVB sitcom "Off Pedder". Au is also a black belt in full contact karate. (Source: Wikipedia) Watch drama online for free.