- Real name: 古筠 (Gu Yun)
- Taiwanese nickname: 小筠 (Xiao Yun)
- Japanese nickname: グーチャン (Guu-chan)
- Flavour: Mango (yellow)
- Birthday: December 14, 1996
- Astrological Sign: Aquarius
- Blood type: O
- Hobbies: Singing, dancing
- Specialty: Dancing
- Favorite Food: Soft and fragrant cake paired with fragrant milk tea, apple, mango, kiwi, bellfruit
- Favorite Pets: Dogs, cats, birds, etc. (she wouldn’t refuse anything small and cute)
Gu Yun, better known in Japan as Guu-chan, is a member of 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.
Due to being busy with school and her dedication to achieving good grades, she doesn’t blog very often and isn’t always able to participate in Ice Creamusume activities. In 2009, she graduated from elementary school 10th of her school.
- Guu-chan graduated from Elementry School on June 12, 2009.
- Guu-chan’s father is famous track athlete (decathlon) Gu Jin Shui.
- Guu-chan has said she is always happy and cheerful, and that she thinks she inherited her hyperactivity from her father.
- Guu-chan is in a dance troupe called “動手動腳兒童舞團” (Dong Shou Dong Jiao Er Tong Wu Tuan, Move Your Hands and Legs Children’s Dance Troupe). They hold some popularity, and have appeared on television. (Guu-chan appeared on TV with them before the NEW STAR auditions). Several members from the troupe besides Guu-chan also participated in the NEW STAR auditions. The troupe also competes in dance competitions.
- Guu-chan appeared in the music video for Jolin Tsai’s song “Let’s Move It” with several other members of her dance troupe. (Before NEW STAR.)
- Ice Creamusume (2008-2011)