"In a general view, the Chinese side has yet to feel any air security threat from the ASEAN (Association of South East Asian Nations) countries and is optimistic about its relations with the neighbouring countries and the general situation in the South China Sea region," Foreign Ministry Spokesman Hong Lei said in a statement yesterday.
Hong dismissed the Japanese media reports that claimed China was preparing to announce a new defence zone in the area driven by territorial disputes with neighbouring countries.
China last year unilaterally declared an Air Defence Identification Zone in the East China Sea, asking foreign planes to provide their flight plans to Chinese authorities.
Analysts say an ADIZ similar to the one on East China Sea would have drawn strong reactions from neighbouring countries.
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The US, Japanese and South Korean defence planes challenged China by flying their jets through it.
On Friday, China said it "expelled" foreign planes from the zone but did not identify the country.
Hong said China, as a sovereign country, has all the legitimate rights to adopt all measures, including setting up ADIZ, to safeguard national security. No one should make irresponsible comments on this, he said.
He said the right-wing forces of Japan have repeatedly clamoured about the alleged plan of China to set up ADIZ over the South China Sea. He said this move is of ulterior motive and simply aimed to shift international attention from and cover up the plot to change Japan's pacifist constitution and expand its military power.
Hong stressed that China and the ASEAN share a bright future for their relations.
China and the ASEAN countries are working together to implement the declaration on the conduct of parties in the South China Sea in a comprehensive and effective way to safeguard peace and stability in the region, he said.