Vincent Ng Cheng Hye, also known as Weng Qinghai, is a Singaporean martial artist and former actor. He is best known for acting in Chinese-language television series produced by MediaCorp Channel 8.
Ng joined MediaCorp after reaching the finals of Star Search Singapore in 1997. His first foray into English-language television was in the 2002 Channel 5 series Heartlanders in which he played one of the lead characters. As he was one of few artistes with any formal training in martial arts, he was frequently cast in period and wuxia television series or as characters requiring fight scenes. He left MediaCorp in November 2007 to concentrate on running Wufang.