Chao Kuo-Jung (; born August 28, 1992 in Taiwan), better known in Japan as Youko (ヨウコ ) is a member of the latest Hello! Project group Ice Creamusume. She was announced as a winner of the Taiwan Hello! Project New Star auditions on September 20, 2008 along with the other members of Ice Creamusume.
Chao Kuo-Jung was 16 when she won the Taiwan Hello! Project New Star auditions
Chao Kuo-Jung won the audition on Sep 20 2008, which would have made her 16, as she was born on Aug 28 1992. The system could likely not work out a person's age on a set date. 