China's Ministry of National Defense has issued a statement, noting that 7 Chinese naval ships have conducted legitimate regular practice in the waters near the Diaoyu islands.

A Chinese naval vessel enters the East China Sea en route to the Diaoyu Islands on Oct. 16, 2012. [Photo/Sina]

The Ministry accused Japanese military jets of infringing on China's sovereignty by flying around the concerned waters. China is keeping a close eye on Japan's moves and has demanded the country stop any actions that may worsen the situation.