Seventy-seven years ago today, on June 25, 1948 (May 19, 1948 in the lunar calendar), the Soviet Union imposed a blockade on Berlin. Western powers send supplies to central Berlin On June 25, 1948, Soviet commanders tightened the blockade of the Allied occupied areas of Berlin, but the western powers said they were determined to airlift enough relief supplies to keep people from starving, which would require a lot of effort. Now the food only lasted for a month, and the Allies estimated that they needed to fly 2,500 tons of food per day to meet the needs of the western region. At present, only 6 tons of food are shipped to Berlin every day. The Soviet Military Logistics Department announced a ban on all food shipments from the Soviet Union to Berlin. The Russians also intercepted six barges from Hamburg to Berlin. The waterway blockade followed the road and rail blockade. Ten days ago, the Soviet Union stopped coal shipments and also reduced the power supply to the Berlin defense zone of the Allies. In return, the Allies banned the delivery of tokens to the Soviet zone. It is estimated that this will not cause much loss to the Soviet Union. But the Allies believed that their interruption of the waterway movement of coal and steel would have great consequences for the Soviet Union. Morale in Berlin's Western Defense Zone remains high. Their confidence is reflected in the increasingly increasing value of the Deutsche Mark. The ratio of the German mark to the new Soviet mark is still 1: 30. In Cologne, Germany, angry German housewives throw eggs in the head of a vendor in protest against high prices. The headlights of a jeep light unloading a plane. Berlin residents wait for a transport plane to land. A seaplane is parked on the waters of a Berlin lake to transport a group of children to the safe and well-supplied refuge of Hamburg.