1950 September 15, 10 American troops successfully landed in Incheon. Under the attack of multinational forces, the main force of the Korean People's Army around Busan was completely annihilated. At the end of September, the multinational forces captured Seoul, and the end of the Korean War was in sight. At the beginning of 10, multinational forces crossed the 38th parallel and entered North Korea, with the intention of reunifying the DPRK and the ROK by the end of 1950.

The dividing line of the multinational force is Taibai Mountain which runs through the north of Korea. The 8th Army of the United States attacks along the west coast, and the Korean 1 Army and the American1Army are on the east coast. 1 0 June 19, the Korean Army1Infantry Division belonging to the 8th Army of the United States took the lead in attacking Pyongyang. On the 20th, Pyongyang was occupied by multinational forces.

The Korean People's Army has been basically wiped out. Most United Nations leaders, including General douglas macarthur, commander-in-chief of the United Nations multinational force, believe that the Korean War will end before Christmas. However, what the western world doesn't know is that the people of China and China have quietly intervened in this war.

The Battle of Changjin Lake has no prototype, no fictional characters;

The fictional character Wu in the movie The Battle of Changjin Lake is played by an actor. Wu Liqian joined the army with her brother Wu Baili in her early years. He's a soldier of the 7th Company 162. Wu Baili died in the liberation battle, so Wu Liqian succeeded his brother as the company commander of the seventh company.

Later, Wu's younger brother joined the army, and the two brothers went to Korea to fight together. Wu loves his brother very much. At first, he wanted to keep his brother away from the war. Later, when he couldn't stop, he asked his younger brother to join the battle of Changjin Lake.