Hiroshima nuclear explosion is one of the most terrible disasters in human history, which should be given due attention and sympathy from the perspectives of humanitarianism, history and political ethics. As an international student, we should pay more attention to our literacy and commitment, respect people's values, and reflect our cultural literacy and international image.

Secondly, speech expression needs to conform to professional ethics and social ethics. Whether in public or on social media, words and deeds need to take into account their own identity and professional image, so as to avoid improper speech and behavior being misunderstood or attacked by others. We should carry forward the idea of positive energy, carry forward positive values, respect others and society, abandon all bad words and deeds, purify social atmosphere, and improve personal moral quality and social accomplishment.

Finally, we should pay attention to the protection and practice of basic rights such as freedom of speech and human rights. Any person or group should be protected for freedom of speech and basic human rights, respect other people's ideas and opinions, and accept different voices with an open and inclusive attitude. However, this does not mean that all speeches are accepted. Sometimes, speaking may cause others' dissatisfaction and disgust. Therefore, we should consider the risk of social media circulation and the pressure of public opinion, and carefully express our personal views and positions.