This work is set against the background of the Vietnam War where Qinghaisu was discovered. It tells the story of the military and espionage battles between the six countries of the United States, the Soviet Union, China, Britain, North and South Vietnam from three main lines. This work has seven chapters, each chapter has seven sections. Main character: Captain David Mai of the 12th Strategic Air Wing of the US Army. Sofia Puginrova, director of the Anglo-Vietnamese Cultural Exchange Center and deputy director of the British MI6 Saigon Station. The King of Chinese Soldiers, Captain Zhao Qianerwa, Captain of the Transportation Brigade of the General Staff Headquarters of the Chinese People's Liberation Army to Resist U. S. Aggression and Aid Vietnam. Other figures include the heads of state of the United States, the Soviet Union, and China. The first main line of this work tells the story of the US military's strategic bombing of North Vietnam. The second main line tells the story of the secret war carried out by the KGB, MI6, and the CIA around the Miss Saigon Project, a spring war effort launched by North Vietnam. The third main line tells the story of how the Chinese army overcame difficulties and dangers to help the South Vietnamese guerrillas destroy the US B52 strategic bomber.