Today, 84 years ago, on June 22, 1941 (May 28, 1941 in the lunar calendar), the Battle of Leningrad broke out. Leningrad was the cradle of the Great October Revolution, the second largest city in the Soviet Union, an important seaport, railway and river transport hub, and an important base of the Soviet Baltic Fleet. When Hitler formulated the "Barbarosha" plan, he repeatedly stressed the need to capture Leningrad, the "birthplace of Bolshevism", and arrogantly shouted that the city must be "erased from the earth". In the early morning of June 22, 1941, according to the "Barbarosha" plan to invade the Soviet Union, the German army launched a large-scale surprise attack on the western border of the Soviet Union in three routes: south, middle and north. The 18th and 16th Armies of the German "North" Army Group and the 4th Tank Group Group have a total of 23 divisions, as well as the Finnish Southeast Army Group and the Karelian Army Group have a total of 15 divisions and 3 brigades, composed of the German 5th Air Force and the Finnish Air Force. More than 1,600 aircraft provided support in an attempt to attack Leningrad from the south and north, quickly annihilate the Soviet troops in the direction of Leningrad, and capture Leningrad. The siege of Leningrad on September 8 and the capture of the city of Tchikhvin on November 8 cut off the last main railway line to Lake Ladoga. "Better die than surrender, Lenin's city will always be ours!" This was the powerful answer of the people of Leningrad in the face of the menacing fascist invaders. With the German army at the gates of the city, the people of Leningrad, men, women and children, took action one after another, took up arms and threw themselves into the heroic battle to defend Leningrad. Due to the desperate resistance of the soldiers and civilians in Leningrad, the Germans paid a huge price for every step forward. German Field Marshal Leib felt exhausted and urgently said to Hitler: "The remaining troops of the army group can no longer continue to attack Leningrad." Although the Germans did not capture Leningrad, they concentrated a large number of troops to establish deep echelon defensive blockade fortifications and surrounded Leningrad. The Germans attempted to kill the residents of Leningrad with constant air strikes, shelling and starvation. The Germans dropped about 70,000 bombs and incendiary cocktails on Leningrad in September-November alone, and carried out 27 heavy artillery shellings. The soldiers and civilians of Leningrad spent the severe winter in the blockade, endured all hardships and hardships, and accepted the most severe test. Especially in the first winter of the blockade, more than 600,000 people died from gunfire and hunger. However, the people of Leningrad withstood the test and became an example of the Soviet people's indomitable victory over the enemy in the defense war. In order to break through the enemy's blockade, the Leningrad Front and the Volkhov Front turned to a counterattack in January 1943 with the active cooperation of the Baltic Red Flag Fleet and the Ladoga District Fleet, broke through the German defense line, established an 8-11-kilometer wide corridor along the south bank of Ladoga Lake, built railways and highways, and transported food, weapons and ammunition into Leningrad, thus alleviating the severe situation. On January 14, 1944, the Leningrad Front and the Volkhov Front, with the support of the Baltic Fleet, began a powerful counteroffensive, breaking through the "Great Northern Wall" built by the German army. After a month and a half of fierce fighting, the Soviet army advanced 220-280 kilometers westward, almost clearing the entire territory of Leningrad and most of Kalinin of the enemy. Three German divisions were wiped out and 23 divisions were defeated. The 900-day defense of Leningrad ended successfully.