[citation needed] She made her Grand Slam tournament main-draw debut at the 2020 Australian Open having received a wildcard,[1] but lost in the first round to Tamara Zidanšek.

[4] The pair repeated the feat at the 2021 Korea Open, this time overcoming Valentini Grammatikopoulou and Réka Luca Jani in the championship match.

[5] Partnering Jang Su-jeong, Han won the doubles title at the 2023 WTA 125 Veneto Open, defeating Weronika Falkowska and Katarzyna Piter in the final.

241 at the 2023 US Open, she qualified for the main draw making her second appearance at a major,[7] losing to ninth seed Markéta Vondroušová in the first round.

[10] Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup and Olympic Games are included in win–loss record.