HFI International Day is an event where students learn and showcase various countries' cultures, arts, cuisines, and humanities to the society and to parents. This event, with students and parents as the main participants, features displays and experiences of multicultural customs supported by the school. It also provides a leisure activity for families to come together and relax.

During the preparation for the event, students delve into the study and understanding of different cultures, showcasing the cultural characteristics and customs of various countries. The process itself is educational for the students. Importantly, all proceeds from International Day, such as food sales, auctions, ticket sales, booth rentals, sponsorship income, after covering the necessary costs of the event, are donated to the Guangzhou Social Welfare Institute.

Through International Day activities, students contribute their efforts to charitable causes, aligning with the school's emphasis on nurturing young individuals who are compassionate.