A J-10A fighter jet fires its gun at ground targets on April 18, 2018. The PLA Air Force started its annual penetration and assault competition assessment--"Golden Dart" in northeastern China on the morning of April 18, 2018. Over 200 pilots will compete for the "Golden Dart" award during the competition by conducting air penetration and assault operations against ground air defense troops. (eng.chinamil.com.cn/ Photo by Yang Pan)
