Russia and China held joint naval drills in the Sea of Japan on Friday.
They practised how to operate together and destroy floating enemy mines with artillery fire, the Russian defence ministry said in a statement.
The war games are part of naval cooperation drills between the two countries which run from October 14 to 17, and involve warships and support vessels from Russia's Pacific Fleet, including mine-sweepers and a submarine.
Moscow and Beijing have cultivated closer military and diplomatic ties in recent years at a time when their relations with the West have soured.
Two Chinese destroyers, a submarine and two corvettes were among the vessels Beijing had sent to take part in the drills, the Russian defence ministry said, saying they had dropped anchor in the Russian far east the previous day.
The combined force would practice shooting at targets designed to imitate enemy surface ships and hold air-defence drills involving Russian SU-30SM multi-functional fighter jets and helicopters, the ministry said.
Prince Harry said on Friday that he wanted reconciliation with the British royal family but his father King Charles will not speak to him over a row over his security and he did not know how long the monarch, who has cancer, would live.
A magnitude 7.4 earthquake struck Drake Passage between Cape Horn and Antarctica at a depth of 10 km (6 miles) on Friday, the United States Geological Survey said.
A ship with humanitarian aid and activists for Gaza was bombed by drones while in international waters off Malta early on Friday, its organisers said, and the Maltese government said after a rescue operation that everyone on board was safe.
A power outage hit several regions of Indonesia's resort island of Bali on Friday and efforts were underway to restore services to those affected, state utility Perusahaan Listrik Negara said.
A Russian drone attack late on Thursday set buildings ablaze in Ukraine's southeastern city of Zaporizhzhia, injuring 29 people, regional governor Ivan Fedorov said.