Also Known As: 장치황, 張智恆, Boy'z, Steven Cheung, Stephen Cheung, Sun Boy'z, Steven, Cheung Chi-Hang
Biography: Steven Cheung Chi-hang is a Hong Kong singer. Steven Cheung was a member of the Cantopop duo, Sun Boy'z from 2002 to 2006, where William Chan joined in and the group was renamed Sun Boy'z. It was officially disbanded in December 2008.