Senkaku Islands [Diaoyu Islands] not Japan's territory

Geological evidence proving the Diaoyu islands belong to China.
China has the right to claim the undersea continental shelf beyond the normal 200 nautical miles because it is a “natural prolongation” of China's land territory into the East China Sea.
The geological characteristics of the continental shelf in the East China Sea differ greatly from those of the Okinawa Trough to the east, and accordingly, the trough should be seen as the end of China’s continental shelf.