The Chengdu J-20, China's first domestically developed stealth fighter jet, marked its initial operational milestone with its maiden flight on January 11, 2011, taking off from an airport in Chengdu at 1:11 PM. Following years of flight testing and development, the aircraft made its first public flight demonstration on November 1, 2016, at the 11th China International Aviation and Aerospace Exhibition. The J-20 officially entered active service with the People's Liberation Army Air Force (PLAAF) in March 2017, and by February 2018, it began serving in combat units, signaling the achievement of full combat capability. Its first public appearance in a combat-readiness posture occurred during a military parade at the Zhurihe training base on July 30, 2017.