The above are photos of China’s J-11 double-seat fighter jets appeared in mil.huanqiu.com report on an air combat drill in a certain air regiment of the South Sea Fleet on March 10. The J-11s are of Taihang version as it uses China-made Taihang engines.
There were 30 flights in the drill for five subjects of training including one-to-one air combat, low- and minimum-altitude flying and air-to-surface (ground) attack. Six new pilots took part in the drill after completing single-pilot flying training.
Source: mil.huanqiu.com “Striking emergence of South Sea Fleet’s double-seat Taihang version of J-11” (summary by Chan Kai Yee based on the report in Chinese)