Lu Rui En (born 29 January 1981), better known by her stage name Rui En (瑞恩), is a Singaporean singer-actress.Rui En was talent-spotted after appearing in a SingTel's popular SingTel hi!Card commercial as the iconic "running girl" in 2001. She was offered a general management contract by Artiste Networks, a section of Hype Records. In 2002, Rui En debuted her acting career in Singapore with her first drama, titled No Problem!. Since 2004, she has averaged one to three dramas per year.