Top Chinese leaders, including President Xi Jinping and Premier Li Keqiang, have visited the exhibition, entitled "Great Victories and Historic Contributions."
Xi Jinping says the exhibition is a reminder of the great history that all Chinese people should keep in mind.
"The spirit of the war against Japanese aggression and the spirit of the nation are still needed nowadays as we are realizing the Two Centenary Goals as well as the Chinese nation's great rejuvenation, during the period of reform and opening up. We should also keep the history in mind in order to create the future. We cannot forget it. Forgetting the past means betrayal.
