Introduction to the MiG-15 fighter: In the open-air exhibition hall of the Aviation Expo, a number of aircraft with meritorious service in the War to Resist U.S. Aggression and Aid Korea are displayed: the MiG-15 aircraft with one solid, three imaginary and four red stars painted on the fuselage is The aircraft of the combat hero Li Han, who was the first in the history of the air war to resist U.S. aggression and aid Korea, and shot down an enemy aircraft; the MiG-15 with three solid red stars painted on the fuselage is the war eagle of the combat hero Zhang Jihui.
On December 12, 1951, Commander of the Chinese Air Force Liu Yalou called the Air Force Party Committee from the front: "In order to encourage pilots and mechanics who shoot down enemy planes, I think we can follow the Soviet Union's approach and shoot down an enemy plane every time it is shot down." The enemy plane has a red five-star painted on our plane." After the Air Force Party Committee agreed, it quickly sent an instruction message to the troops, and made it clear that downing and damage were represented by solid and hollow red stars respectively. From then on, the "hero" aircraft had shining red stars.