In the winter of 1950, volunteer soldiers Chen Tieshan, Zhao Xiaobao and others crossed the Yalu River and fought against the powerful enemy with their flesh and blood in the extreme cold of Changjin Lake and the artillery fire of Shangganling. They endured hunger and cold, fought bloody battles, tempered their comradeship and the friendship between China and North Korea in the test of life and death, used sacrifice and perseverance to interpret their bold loyalty to "protect their home and country", and composed a passionate song.
