Before debuting she was the vocalist of a band for 5 years.
Her desire to be a singer came about because she used to attend big concerts, so she wanted to perform at one.
She thought about becoming a pure solo singer, but became the final member announced as a member of MINX instead.
Her mother may have inherent infantile speech. Siyeon pretends to speak in infantile speech often.
She is the youngest member of Unnie Line, SuSiJi, with JiSu.
Despite being the main vocalist of Dreamcatcher, when she does rap covers or freestyle rap, she has arguably the fastest rapping speed in the group. She also admitted to had been a rapper trainee during her time as a trainee.
She studied singing at Enfle Music Academy of Suseong-Gu.
Her cover of "Speechless" from the Aladdin movie was added to the cover playlist on the official Disneymusic channel on YouTube.
She took second place on the V-1 singing show, in the final battle against Cosmic Girls' Yoo Yeon Jung.
Her cover of "Blind Days" was the soundtrack for the 1000 day anniversary home screen of the mobile game "King's Raid".
She is the first member of Dreamcatcher to debut as a soloist, participating in the composition of her single "Paradise".
She has a tattoo below her left armpit.
Her first tattoo, however was "Paradise is Where I Am"
Her single "Paradise" managed to rank second on the Itunes K-POP song charts in the United States.
