防空識別圏
The East China Sea Air Defense Identification Zone (abbreviated ADIZ) is an Air Defense Identification Zone covering most of the East China Sea where the People's Republic of China announced that it was introducing new air traffic restrictions in November 2013. The area consists of the airspace from about, and including, the Japanese controlled Senkaku Islands (which are known as the Diaoyu Islands in mainland China and are claimed by mainland China as well as Taiwan) north to South Korean-claimed Socotra Rock (known as Suyan Jiao in China). About half of the area overlaps with a Japanese ADIZ, while also overlapping to a small extent with the South Korean and Taiwanese ADIZ. When introduced the Chinese initiative drew criticism as the ADIZ overlapped with the ADIZ of other countries, imposed requirements on both civilian and military aircraft regardless of destination, and included contested maritime areas