Tsang Kwok Cheung (English name: Derek Tsang) is a Hong Kong actor and film director. He is the son of Eric Tsang. He directed the films "Lover's Discourse" and "Soul Mate", and starred in "The Thieves" in 2012. His father originally wanted to become a soccer player just like his father Tsang Kai, who was Derek's grandfather. But, he ended up pursuing an acting career in 1977 and later moved to Hong Kong when Derek was still a baby. Derek made his debut for "Men Suddenly in Black" in 2003, where he played a younger version of his father's character. (Source: Wikipedia) Watch drama online for free.