On December 3, 2014, under the stage name Ziu, she debuted as a member of A-Daily with the release of their first digital single "If You Don't Tell Me". In October 2017, she became a contestant on the survival show MIXNINE. She was eventually eliminated in with her final rank in 72nd place.
On September 10, 2019, sometime after A-Daily announced a new line-up without her, she posted her goodbye letter to the group's fan café to announce her departure from the girl group. On September 13, 2021, she debuted as one half of the duo UNC with the digital single "Winsome", under her birth name Choi Jisun. The group presumably disbanded in 2022 due to inactivity.
Later that year, on August 18, 2022, she was introduced as a member of the female dance crew 1SPIRIT. She was active with the dance crew for two years until their final performance in August 2024. On November 20, 2025, True Rising Entertainment announced that they had signed an exclusive contract with Choi Hari.
On January 21, 2026, Hari released her debut digital single "Jumper".
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