Promoting international understanding and cultural diversity means respecting different cultures, religions, and social customs, and establishing equal, peaceful, mutual understanding, and cooperative relationships on a global scale. This can be achieved in various ways, such as increasing cross-cultural exchange and interaction, encouraging cultural diversity, supporting transnational education, and promoting opportunities for mutual learning and sharing experiences. To achieve international understanding and cultural diversity, it is necessary to cultivate a sense of global citizenship, as well as the ability to respect, appreciate, and tolerate different cultures, religions, and social customs. Governments, international organisations, and civil society should strengthen cooperation, formulate corresponding policies and plans to promote international understanding and cultural diversity, alleviate cultural conflicts, and promote global peace and development.