When Wang Lei touched the volunteer army battle flag frozen with blood and ice in the military museum, the world suddenly turned around. When he opened his eyes again, he was lying in the snow of Changjin Lake, with the howling cold wind and vague English conversations in his ears - he traveled to November 1950 and became the instructor of the 2nd Battalion, 4th Company, 239th Regiment, 27th Army, 80th Division, 9th Corps of the Volunteer Army.
