Win Win (Dong Si Cheng) 윈윈 董思成 NCT WayV
- Birth Name: Dong Si Cheng (董思成)
- Stage Name: Win Win (윈윈)
- Korean Name: Dong Sa Sung (동사성)
- Birthday: October 28, 1997 (26 yrs western, 28 Korean)
- Position: Dancer, Vocalist
- Nationality: Chinese
- Height: 180 cm (5'11″)
- Blood Type: B
- Specialties: Traditional Chinese Dance
- Unit: NCT U, NCT 127, WayV (NCT China)
- Music Companies: SM Entertainment, YUEKAI Entertainment
Dong Sicheng , known professionally as Win Win, is a Chinese singer, rapper, and dancer based in South Korea and China.
He is best known as a member of the South Korean boy group, NCT and its sub-units NCT 127, NCT U, and China-based unit WayV.
Win Win was born on 28 October 1997 in Lucheng District, Wenzhou, Zhejiang province, China. In 2009, he was admitted to the Affiliated Secondary School of Beijing Dance Academy where he ranked first in the Chinese Classical Dance department. Winwin has lived away from his family since 2009, when he moved from Wenzhou to Beijing in order to attend Beijing Dance Academy for six years. In 2015, he moved to Seoul, where he became a trainee at South Korea's largest entertainment company, SM Entertainment. Winwin has said that since his primary school graduation, he's only been able to visit his family in Wenzhou for about a few days each year. He also has an older sister who has been living in New Zealand for a long time.
Winwin currently attends Central Academy of Drama where he majors in Performing Arts.
On 5 January 2016, Win Win was introduced as a member of SM Entertainment's pre-debut trainee group, SM Rookies. February 1, 2016, a video of him performing a beautiful rendition of Chinese classical dance was released as the third installment of NCT's debut teasers on SM Town's official YouTube channel.
On 9 April 2016, Win Win appeared alongside NCT U in China at the 16th Music Feng Yun Bang Awards for their first live performance of "The 7th Sense". At the time, he had not yet been officially introduced as a member of NCT. On the same day, he also made a cameo on both the Korean and Chinese version of NCT U's debut music video for "Without You".
On 1 July 2016, Win Win was announced as a member of NCT's second unit, NCT 127 along with Taeil, Taeyong, Yuta, Jaehyun, Mark, and Haechan. The unit is based in Seoul, with the number "127" representing the first three digits of the city's longitude coordinate. On 7 July 2016, Win Win made his official debut as a member of NCT 127 with the title track "Fire Truck.
WayV is managed under Label V, SM Entertainment's new exclusive Chinese label and officially debuted on 17 January 2019 with their debut EP The Vision and the Chinese version of NCT 127's "Regular" as its lead single. SM Entertainment CEO Chris Lee acknowledged that WayV is NCT's China-based unit in a press conference.
On November 27, 2021 it was announced that Win Win had signed a contract with Chinese label YUEKAI Entertainment.
