Tan Kheng Seong (Simplified Chinese: 陈庆祥; Traditional Chinese: 陳慶祥; Pe̍h-ōe-jī: Tân Khèng-siông), better known by his stage name Ah Niu or Ah Gu (Chinese: 阿牛), is a Malaysian Chinese singer in Malaysia and Singapore. In 1997, his popularity was restricted to mainly Malaysia and Singapore, until Richie Jen (Traditional Chinese:任賢齊, Taiwanese singer) sung his song (Dui Mian De Nü Hai Kan Guo Lai- " direct translation = Look over here, girl in front of me") which became widely popular.