This film is based on Song Zhi's play Defending Peace. The film tells the story of a battle in which the China Volunteers fought side by side with the Korean People's Army to severely crack down on the aggressors, which shows the strong will and internationalism of the soldiers to fight bravely and selflessly. The director of this film has been to the Korean battlefield to shoot a documentary, so he can reproduce the battlefield environment and fighting atmosphere at that time. Through the true description of the war scenes and deep feelings for the volunteers, the film has a strong sense of the times, the scene is real, the picture is full of smoke from the battlefield, and the film is always filled with a kind of high-spirited and passionate power.