[1][2] From San Diego, California, Hui graduated from Santa Fe Christian High School in 2023 and committed to Stanford University.

[7] In 2023, at the Billie Jean King Girls’ 16s and 18s National Championships, she reached the final but was defeated in three sets by Clervie Ngounoue.

[8] Awarded a wildcard into the girls' singles at the 2023 US Open, Hui won the tournament by defeating Tereza Valentová in straight sets.

[9] Awarded a wildcard for the qualifying competition to the 2023 US Open women's singles, Hui lost in the first round to Eugenie Bouchard.

[10] She received a wildcard for the 2024 San Diego Open for her WTA Tour main-draw debut,[11] but lost in the first round to seventh seed Donna Vekić.