The film is based on the Battle of Changjin Lake in the second battle of the War to Resist U.S. Aggression and Aid Korea. It tells a magnificent history: 71 years ago, the Chinese People’s Volunteers went to fight in Korea. In the extremely cold and harsh environment, the Eastern Front combat troops relied on iron willWith a heroic and fearless fighting spirit, they pursued all the way, killed the enemy bravely, reversed the battlefield situation, and demonstrated military and national prestige.