Japan says it scrambled fighter jets flew along Miyako Strait on Sunday after eight Chinese military aircraft between the Japanese islands.
Aircraft, believed to be the bombers and surveillance aircraft,
fighter jets and one, flew along the Miyako Strait between Okinawa and Miyakojima.
China said had included about 40 of the planes in what it said was a routine drill.
Aircraft did not reflect the Japanese airspace,
but looks at the move as a show of force on the part of China.
It comes one week after Japan said it would take part in joint training exercises with the US navy in the South China Sea.
Japan’s top government spokesman said Japan would be watching China’s military movements closely.
Tokyo will “continue to devote every effort to vigilance and surveillance
and rigorously enforce steps against intrusions into our airspace based on international law
and the self-defence forces law”, said Yoshihide Suga.
The Miyako Strait is a strategically important 250km (155 miles) wide stretch of water south of Okinawa and close to Taiwan.
It is also close to a group of islands in the East China Sea which are claimed by both Japan and China.
Japan, which controls the islands, calls them Senkaku, while China calls them the Diaoyu Islands.
Japan tests innovative magnetic tether for slowing space junk
INDONESIA Earthquake:Number of homeless soars to 43,000
Jennifer Lawrence apologies for Hawaii ‘butt-scratching’ story
A History of PIA Accidents That Have Killed Over Many People!
South Korea lawmakers vote to impeach leader