Winwin (윈윈)
Dong Sicheng (Chinese: 董思成) better known by his stage name Winwin (Hangul: 윈윈). WinWin is a Chinese singer, dancer, and rapper born in Wenzhou, Zhejiang on October 28, 1997. He is the lead dancer, sub-vocal, and the sub-rapper in NCT 127, NCT U and WayV.
- Original Name: Dong Si Cheng (董思成)
- Stage Name: Winwin (윈윈)
- Korean Name: Dong Sa Sung (동사성)
- Position: Dancer, Vocalist, Rapper & Visual
- Birthday: October 28, 1997
- Height: 179 cm (5'10.5″)
- Weight: 60 kg (132 lbs)
- Blood Type: B
- Zodiac Sign: Scorpio
- Representative Emoji: 🐥
- Sub-Unit: NCT U, NCT 127 & WayV