Chinese air force begins regular combat exercise(1/2)

Undated photo shows Chinese Air Force jet fighters attending the "Red Arrow -- 2018" drill. The Chinese Air Force began the "Red Arrow -- 2018" combat exercise in the country's northwest desert on May 23, 2018. (Xinhua/Xi Bobo)

Undated photo shows a Chinese Air Force jet fighter attending the "Red Arrow -- 2018" drill. The Chinese Air Force began the "Red Arrow -- 2018" combat exercise in the country's northwest desert on May 23, 2018. (Xinhua/Xi Bobo)