Countries differ in national condition and stage of nuclear power development, and the nuclear security challenges they face also vary from one to another. As the saying goes, you need different keys to open different locks. While stressing the importance of countries honoring their international obligations, we should respect their right to adopt nuclear security policies and measures best suited to their specific conditions as well as their right to protect sensitive nuclear security information. We should adopt a fair and pragmatic attitude and advance the international nuclear security process in an active yet prudent manner.