- K-Pop group: Cosmic Girls
- Sub-Unit: Natural Unit
- Position: Vocalist, Dancer and Maknae.
- Voice type: Light lyric soprano
- Vocal range: E3 – D6 (2 octaves, 5 notes, and 1 semitone)
- Registration supported A3/Bb3 – B4/C5
- Sign that represents Ophiuchus.
- Former Project Group: I.O.I
- Position: Vocalist and Dancer.
- Hanlim Multi Art School, Seoul Music High School (Present).
- Training period: 1 year and 3 months before her debut.
- Specialty: Vocalist, light dancing.
- Hobbies Playing alone.
- Motto: “I will do my best.
- Auditioned for JYP Entertainment with the song ‘Bad Guy from JOO.
- She studied singing at the IBmusic Academy.
- She was a trainee at SM Entertainment she could have made her debut in Red Velvet together with her colleagues Cheng Xiao, Luda and Bona.
- Participated in the survival program Produce 101 starting in 54th position and moved up each week after the performance of ‘Into The New World’. from Girls’ Generation to reach the final and debut in the project group I.O.I.
- Debuted as a member of Cosmic Girls august 18, 2016.
- The song I’ll Be On Your Side in collaboration with Yu Seung Woo part of the project of Starship Entertainment called Vintage Box, reached #1 on the olleh music chart.
- She participated in Masked King’s Generation 46, carrying the name “Snow Cornice”, making it to the second round.
- She was the winner of the program V-1 she received the prize of 10,000,000 won (approximately 8,700 dollars)
July 11, 2016, Starship Entertainment announced that Yeon Jung would join Cosmic Girls through a teaser video where you can see the Galaxy, a question mark and a constellation formed by 13 stars named Ophiuchus.
Yeonjung (Cosmic Girls) Collaborations
- DinDin – Drive (feat. Yoo Yeon Jung) (2017).
Yeonjung (Cosmic Girls) Drama
- A Korean Odyssey (tvN, 2017). cameo
- V-1 (tvN, 2019)
- PRODUCE 48 (Mnet, 2018) Invited along with. I.O.I and BATHTUB ONE
- PRODUCT 101 (2016, Mnet)
- Mystery Music Show: King of Mask Singer (2016, MBC)
Yeonjung (Cosmic Girls) TV Drama’s
- 100 percent (next to Seol A ) theme for Best Mistake 3 (2022)
- Drawing Of Beginning theme for My Roommate is a Gumiho (2021)
- Spider Lily theme for More Than Friends (2020)
- Tell Me, Please subject for Melting Me Softly (2019)
- Stay With You theme for Where Stars Land (2018)
- Your Name… theme for The Undateables (2018)
- Melo Holic theme for Melo Holic (2017)
- Toy (next to Brother Su ) theme for Love Playlist 2 (2017)
- You’re Dazzling theme for Seven Day Queen (2017)
- Fire & Ice (next to Da Won ) theme for The Snow Queen 3: Fire and Ice (2016)