Soon after the People's Liberation Army of China was formed, it created its own Air Force on November 11th, 1949. At first it consisted mostly of Soviet aircraft, but now it boasts a wide range of Chinese-made aircraft and is among the three largest air forces in the world.
From November 11th (09:00 GMT) until November 14th (07:00 GMT)
Play 3 battles using Chinese aircraft (rank III or higher, with an activity of not less than 70%) to receive the “Emblem of the People's Liberation Army Air Force” decal.
“Emblem of the People's Liberation Army Air Force” decal
Complete the task in random battles, except for Enduring Confrontation missions and [Assault] mode. Track your progress in the hangar by clicking Nickname → Achievements → Holidays → People's Liberation Army Air Force Day.
You can find the decal in the “Holidays” tab in the Customisation menu.