[8] Kong completed her secondary studies at Sha Tin College and graduated from Stanford University with a Bachelor of Arts in international relations.

[9] As of 2024, she is studying for a Juris Doctor degree at the Faculty of Law at The Chinese University of Hong Kong and aspires to work for the United Nations.

[11] Kong won one of the bronze medals in the Women's épée at the 2022 World Fencing Championships held in Cairo, Egypt.

[12] In the women's épée event at the 2024 Paris Olympic Games, Kong defeated Olena Kryvytska in the quarterfinals and Nelli Differt in the semifinals.

In the finals, she overcame a 1–7 deficit against Auriane Mallo to win 13–12, securing Hong Kong's third-ever Olympic gold medal.