She is known for her vocal ability, signature aegyo, appearances on many variety programs, and prevalence at events throughout South Korea all year round.

(누가 그녀와 잤을까) and she also played a role in Yeon Gaesomun, a historical Korean drama that takes place in the seventh century.

[2] Hong began her music career in 2007, with SWAN (스완), a Korean girl group consisting of members, Han Ji-na, Hong Jin-young, Heo Yoon-mi, and Kim Yeon-ji, with their debut song "Call Me When You Hear This Song" (이 노래 들으면 전화해), featuring Coolapika.

[5] Hong is well known for her multiple appearances on popular music variety shows like Immortal Songs 2 and King of Mask Singer.

In November of that year, Hong released her first EP, Life Note (인생노트) with the title song “Cheer Up” (산다는 건).

[6] In 2016, she released her second EP, The Most Beautiful Moment in Life (화양연화), with the title song “Thumb Up” (엄지 척) and “Love Wifi” (사랑의 와이파이).

She wrote and composed a second electrot single "I Kicked My Luck Off" (복을 발로 차버렸어) for Kang Ho-dong, which was released through SM Station.

After the announcement, on April 6, 2022, the single "Viva La Vida" was released with both Korean and English versions of the song and video.

[15] On February 25, 2024, Hong released a ballad digital single and Music Video, titled "Spring", in her first collaboration with Jo Young-soo in 10 years since her song "Cheer up".

[20] On the same day, her agency released a statement denying all accusations, stating her thesis was "under review in 2009" and that "Copy Killer is a system that began obligatory use in universities beginning 2015 and is meant to filter out submissions with more than 50 percent plagiarized content.