He is the 4th drummer of Mayday. His birth name is Yan Ming, but he changed his name to Guan You because of a fortune-teller to be luckier. However, according to him, it does not seemed to have worked. He proposed to his girlfriend during a Mayday concert in Beijing in November 2005 and was married in June 2006. His daughter was born in October 2006. He became the first father among the five members of Mayday.