The Chinese missile destroyer Huangshan attends the Kakadu 2018 naval exercise in Australia on September 6, part of a fleet from other 26 countries including Australia, Singapore, Canada and Pakistan. The biennial naval exercise will last until September 10. (Photo provided to China Plus)

Chinese soldiers and officers work onboard Chinese frigate Huangshan during Exercise KAKADU 2018 at sea off the coast of Darwin, Australia, Sept. 6, 2018. (Photo provided to China Plus)

A Chinese soldier watches through a telescope onboard Chinese frigate Huangshan during Exercise KAKADU 2018 at sea off the coast of Darwin, Australia, Sept. 6, 2018. (Photo provided to China Plus)

Chinese soldiers and officers work onboard Chinese frigate Huangshan during Exercise KAKADU 2018 at sea off the coast of Darwin, Australia, Sept. 6, 2018. (Photo provided to China Plus)

Warships take part in Exercise KAKADU 2018 at sea off the coast of Darwin, Australia, Sept. 6, 2018. (Photo provided to China Plus)