A Chinese naval fleet on Tuesday returned to a port in Sanya city on Hainan Island after a high sea drill.

The fleet, which is comprised of missile destroyers Changsha and Haikou and supply ship Luomahu, had sailed over 8,000 nautical miles since Feb. 10, passing the South China Sea, East Indian Ocean, West Pacific and East China Sea.

In 25 days, the fleet passed through Karimata Strait, Xunda Strait, Lombok Strait, Makassar Strait and other important waterways.

During the high sea drill the fleet carried out regional joint air defense, oceanic supply, anti-terrorist and anti-pirate drills, as well as actual combat drills between warships and helicopters, strengthening the fleet's capacity to conduct multiple military operations.

"The drill focused on air defense, anti-missile and open sea interception and we have gained experience for multiple military operations," said Yu Manjiang, commander of the fleet and deputy commander of the Nanhai Fleet.