The Hong Kong Inter-School City Nature Challenge (HKISCNC) is a friendly week-long competition in which secondary schools find and log the most species in and around their campus to gather more data on Hong Kong’s urban biodiversity. With the high level of students’ engagement, our school won the ‘Most Observations’, ‘Most Observers’ and ‘Most Species’ with 4575 observations, 278 observers and 509 observed species respectively. Our S.4 student representative, Hayley Wong, attended the sharing session held on 11 Jan 2020 and provided feedbacks to the organizer after the fruitful discussion with other schools.