Billy Lau  Billy Lau Nam Kwong (born 3 April 1954) is a Hong Kong film actor, director and writer. He is best known for playing the Police Captain in "Mr. Vampire" (1985) and went on to be cast in similar roles. He has appeared in many comedy and horror films. Before acting Lau was an optician for some time and treated Bey Logans' wife's. After the closure of Digital Broadcasting Corporation on 10 October 2012. Lau, activists and radio hosts began a three-day sit-in protest in front of the government headquarters due to freedom of speech concerns. Lau went on hunger strike more than 130 hours and eventual went to hospital. An Internet radio station D100 was established due to the closure of Digital Broadcast Corporation.