Group 1: Historical Context - The article commemorates the 80th anniversary of the victory in the Chinese People's Anti-Japanese War and the World Anti-Fascist War, highlighting the importance of WWII artifacts in museums to convey historical memories [1] - The siege of Leningrad (now Saint Petersburg) lasted for 872 days, during which the city faced extreme hunger and deprivation, with citizens receiving only 125 grams of bread daily, made from increasingly scarce and poor-quality ingredients [2][3] Group 2: Leningrad's Struggles - The initial bread was made from a mixture of oats, barley, and soy, but as supplies dwindled, it began to include flaxseed, bran, and eventually inedible materials like cotton and wall plaster [2] - The situation improved slightly with the establishment of the "Road of Life" across Lake Ladoga, allowing some food supplies to reach the city, despite the extreme cold and danger from German artillery [3] Group 3: Commemoration and Legacy - Museums in Leningrad, such as the Defense and Siege Museum and the Bread Museum, preserve these artifacts, symbolizing the resilience and dignity of the city's inhabitants during the siege [4] - The story of Vasily Zaitsev, a legendary Soviet sniper, illustrates the human spirit and bravery during the war, as he became a feared figure among German troops, achieving significant kills with his old rifle [7][8] Group 4: Intelligence and Technology - The Cabinet War Rooms in London served as a crucial strategic command center during WWII, where important decisions were made, and it operated continuously for six years [10] - Bletchley Park, known as the "Silicon Valley of Intelligence Warfare," was pivotal in code-breaking efforts, including the Enigma and Lorenz ciphers, which significantly impacted the war's outcome [11][13]