Dong Sicheng (Chinese: 董思成; born October 28, 1997) known by his stage name Winwin (Hangul: 윈윈) is a Chinese singer, dancer, and rapper who is the visual, lead dancer, sub-vocal, and sub-rapper of NCT 127, NCT U, and WayV.
Known For: Acting
Birthday: 1997-10-28
Place of Birth: Wenzhou, Zhejiang, People’s Republic of China
Also Known As: 윈윈, Dong Sa Sung, 동사성, Dong Si Cheng, 엔시티, 董思成, Winwin, Winko, Dong Sicheng, NCT 127, NCT U, WayV