Group 1 - The 80th anniversary of Japan's unconditional surrender is being commemorated across the country with various activities to honor the martyrs and remember history [2] - The China People's Anti-Japanese War Memorial Hall is showcasing numerous exhibits related to Japan's unconditional surrender on August 15, 1945, including the first display of a national first-class cultural relic, the "Missouri" battleship's boiler nameplate [3] - A painting titled "September 9, 1945, 9 AM, Nanjing" is featured in the exhibition, symbolizing the presence of fallen heroes at the surrender ceremony through an empty chair in the artwork [5] Group 2 - The exhibition includes war trophies captured from Japanese troops, displayed in a design that symbolizes the concept of "surrender" [7] - In Nanchang, Jiangxi Province, the public visited the former residence of Mei Ruyao, a Chinese jurist who represented China at the International Military Tribunal for the Far East, showcasing valuable historical photos and documents [7] - A memorial event was held in Nanling County, Anhui Province, where over 60 participants paid tribute to revolutionary martyrs by offering flowers and reaffirming their party vows [9]

Core Points - The 80th anniversary of Japan's unconditional surrender is commemorated on August 15, 2023 [1] - The China People's Anti-Japanese War Memorial Hall features numerous exhibits related to Japan's surrender in 1945 [3] Group 1 - The exhibition includes the first display of a national first-class cultural relic, the "Missouri" battleship's boiler nameplate [3] - A multimedia screen allows visitors to view historical videos from the time of Japan's surrender [3] - The exhibition recreates the historical scene of the Japanese surrender signing ceremony in the China theater on September 9, 1945 [3] Group 2 - An oil painting titled "September 9, 1945, 9 AM, Nanjing" is displayed in the exhibition [5] - The painting features a blank chair symbolizing the martyrs who sacrificed their lives during the war, indicating their presence at the surrender ceremony [7]