China's air force said Friday its planes had again flown over the Miyako Strait, near Okinawa Island, as part of a drill in the western Pacific Ocean.
The move comes as China's military ramps up its combat capability amid growing maritime tensions in the region.
The drill took place a day after Chinese President Xi Jinping announced a major overhaul of the country's military to make the world's largest army more combat ready and better equipped to project force beyond the country's borders.