Dong Sicheng (董思成)
Wenzhou, Zhejiang, China
October 28, 1997
180 cm (5 ft 11 in)
Singer, Dancer, Rapper
Dong Sicheng (Chinese: 董思成) known by his stage name Winwin (Hangul: 윈윈) 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.
History on NCT
July 10, 2016: Made his debut on the sub-unit
NCT 127 with the first mini-album, NCT #127. February 18, 2018: Made his debut on the sub-unit
NCT U with the first full album, NCT 2018 Empathy title song, " Boss". March 14, 2018: Participated on the project unit
NCT 2018 with the first full album, NCT 2018 Empathy. November 22, 2018: Started hiatus from
NCT 127 due to his participation in WayV.   January 17, 2019: Made his debut on the sub-unit
WayV with the digital EP, The Vision. October 12, 2020: Participated on the project unit
NCT 2020 with the second full album, NCT Resonance Pt. 1. November 23, 2020: Participated on the project unit
NCT 2020 with the second full album repackage, NCT Resonance Pt. 2. December 4, 2020: Participated on the project unit NCT 2020 with the second full album final single, Resonance.
Stage Name: Winwin (윈윈)
Zodiac Sign: Scorpio
Sub-Rapper Nickname: Winko, SM's Purest Child, Yun Yun, Chick, Visual winner, He never loses Winwin, Let's WINWIN, Wonwon, Winald, BinBin, MinMin, TinTin, 2Win
MBTI: INFJ-A 
Speciality: Chinese Traditional Dance.
Hobbies: Piano, Watching Movies.
Beijing Dance Academy Affiliated Secondary School
(Major of Traditional Chinese Dance) ( Graduated) The Central Academy of Drama (Major of Acting) ( Graduated)
Likes: Sleeping, shopping, babies, dogs, vacations, NCTzens, snow
Dislikes: When people touch him
Favorite Drinks: Caramel Macchiato, soda water, and orange juice.
Favorite Hobbies: Watching movies, but he would like to learn how to shoot guns as well. He also likes to swim.
Favorite Color: White and Black.
Favorite Places: New Zealand, Gyeongbokgung Palace and amusement parks.
Favorite Musicians: EXO, Jay Chou.
Favorite Actors: Kim Soo-hyun and Shu Qi.
Favorite Movies: Pursuit of Happyness.
Favorite Anime: One Piece.
Favorite Saying: Let it Be.
Favorite Language: English, Korean, Chinese
Favorite Food: Hot Pot, Tiramisu, Samgyeobsal, Strawberries, Mushrooms, Chips.
Ideal Type: Someone who has long black hair.
Fears: Strangers, heights The song that made him wanna become an artist: EXO’s “Growl” (Apple NCT’s Playlist)
He has his drivers license.
 He can play the guitar.
He can speak both Chinese and Korean.
He used to be really short as a kid.
He once had a snaggletooth.
He doesn't wear clothes when he sleeps.
He wants to try acting.
He likes gummy candies better than chocolate.
Minhyuk (Monsta X) said he finds Winwin really handsome. He wants to do a fried chicken cf.
He always uses his phone because he loves the games on the phone.
He has two dogs named
Figure and Penny. He is the most flexible member in 127.
He is shy around strangers.
He was casted on the streets leaving Beijing's Dance Academy.
He used to be roommates with Yuta and Taeil in 127 dorms and is now roommates with Lucas in WayV's dorms.
He always stretch in the morning.
He sleeps with his eyes open.
He didn’t trust the SM agents at first and believed they were scammers.
SM scouted him for 2 years because he kept giving them a wrong number whenever they would ask for his number.  The most difficult Korean word for WinWin is ‘deo araero’.
WinWin is close to Seventeen’s The8.
He was included as one of the idols that had a "Funny and Surprising Way" of getting casted in an article written by
Soompi.  If he could only eat one food for the rest of his life it would be hot pot.
 While Winwin was in a two-week quarantine with Lucas in March 2021, he cut his own hair. 
To view the Winwin gallery, click here.