Core Points - The event commemorates the sacrifices of revolutionary martyrs and victims during the Chinese People's Anti-Japanese War and the World Anti-Fascist War, aiming to enhance national defense awareness and improve air defense and disaster prevention consciousness [1][2] Group 1 - The Zhengzhou National Defense Mobilization (People's Air Defense) Office successfully organized the "9·18" air defense alarm test, which included three types of signals: pre-warning, air raid, and all-clear, conducted from 10:00 to 10:31 AM [1] - The event featured elderly heroes sharing their experiences from wartime, serving as a profound reminder of the anti-war history and the development of national defense and air defense efforts in the city [1] Group 2 - The ceremony emphasized the theme "Long Ringing Alarm, Remember History, Stay Vigilant, Strengthen National Defense," and included community and school outreach programs to educate the public on air defense alarm recognition and emergency preparedness [2] - The Zhengzhou National Defense Mobilization Office has been focusing on core tasks such as wartime air defense, civilian service, and emergency support, enhancing command systems and protective measures for key areas [2] - The office aims to utilize air defense resources effectively to support urban construction, economic development, and improve public welfare, while also enhancing emergency response capabilities [2]