BEIJING, Nov. 11 -- The People's Liberation Army Air Force has held open days on Tuesday to Wednesday to commemorate its 66th anniversary.The Air Force has invited the public to visit military equipment displays and flight training at 18 camps in 14 provinces and municipalities.

Units including aviation forces, airborne forces, surface-to-air missile troops and radar troops are all involved.

Air Force academies and military training institutions will be open to the public.Since 2013, the air force has organized open days every year.