Tse competed at the 2020 Summer Olympics in Tokyo, held in 2021 due to the COVID-19 pandemic. Partnered with Tang Chun Man, she finished fourth in the mixed doubles, defeated by the Japanese pair Yuta Watanabe and Arisa Higashino in the bronze medal match. Tse and Cheung Ka-long were the flagbearers for the Hong Kong team at the Olympic opening ceremony.