- Full name: Dŏng Sīchéng
- Date of Birth: October 28, 1997
- Nationality: Chinese(China)
- Blood type: B
- Group: NCT, NCT U, NCT 127, WayV
- Agency: SM Entertainment
- Debut: 2016
- Position in the group: main dancer, lead rapper, sub vocalist
- Family members: Mom, dad, older sister, Winwin
- Nickname: ‘bbi-yag-i; which means chick’, ‘shaohua’,’SM innocence’ and ‘wingwing’
- Winwin sleeps with his eyes opened
- He wears glasses off stage
- His sister was born and raised in New Zealand so they don’t get to see each other often. Winwin misses his sister a lot
