Shan Xin (, literal meaning The New Mountain, born 1 January 1989), also known as Wang Youji or Wang Shuang, is a Chinese singer, voice actress and a core member of the TrioPen Studio () and Drama Times ().
Her stage name is derived from Kappei Yamaguchi () and Kudo Shinichi ().
She married Huang Zhenji () and currently lives in Beijing.