Lee studied in the Chinese University of Hong Kong and obtained a Bachelor of Social Work, wishing to serve at-risk youths.

[3] In the 2019 Hong Kong local elections, Lee became the first democrat in the Kam Ping constituency of District Council after defeating pro-Beijing candidate supported by retiring veteran Choy So-yuk.

[4][5][6] A year later he joined the pro-democracy primaries, hoping to secure nomination for the camp to run in District Council (Second) constituency, but was defeated by other candidates.

Unlike majority of the Hong Kong 47, Lee was granted bail by court after considering him for having served the community as district councillor and co-operated with various government departments.

[8][9] On 30 May 2024, Lee was one of two defendants who were acquitted, the other being Lawrence Lau, because the court found that he had not mentioned an intention to use veto power to force the government to agree to the protesters' demands.