Three aircraft formation....
The Hongdu JL-8 (Nanchang JL-8), also known as the Karakorum-8 or K-8 for short, is a two-seat intermediate jet trainer and a light attack aircraft designed in the People's Republic of China by China Nanchang Aircraft Manufacturing Corporation. The primary contractor is the Hongdu Aviation Industry Corporation.
The JL-8 trainer was proposed as a joint cooperation effort between the governments of Pakistan and the People's Republic of China in 1986.
The first prototype was built in 1989, with the first flight taking place on 21 November 1990 by Chief Test Pilot Col Yang Yao. Flight testing continued from 1991 to 1993 by a Flight Test Team consisting of four Chinese and two Pakistani pilots.