An area off the east coast of Hainan, a tropical island in southern China, will be the scene of extensive military maneuvers between Tuesday and Wednesday, and access to this zone will be strictly "prohibited "said on its website the China maritime Administration".
The statement provided details of the closing but did not specify the type of exercises or the reason behind the drills.
Admiral John Richardson, the Chief of Naval Operations, is on a long planned visit to China, with the South China Sea at the top of the agenda.
While the tribunal ruled that some land features were not islands but rocks or reefs, which would not permit China to claim territorial waters around them according to UNCLOS, Beijing rejected the ruling by stating that it was not obligated to defer to UNCLOS on issues of sovereignty.
On July 12, the PCA ruled that China had no historic title over the West Philippine Sea and that it violated the rights of the Philippines when it put up structures in contested islands and drove out Filipino fishermen. It's not saying this is ours, this is yours, because it's a very complicated issue, it's not just between the Philippines and China, but also the other claimants like Taiwan, Vietnam, Malaysia, Brunei even Indonesia. The five-judge tribunal dismissed China's "Nine-dash Line" claim which covers about 85 percent of the South China Sea, saying it was unlawful under UNCLOS which it ratified in 1996.
It is feared that China will use the new islands to extend its military reach. China refuses to recognize the ruling.
"While China's military drills have become a regular routine ... they will also serve as a warning and active defence against United States aggression", Li said.
On Monday, Wu told Richardson that Beijing "will never give up halfway" the construction of its islands in the South China Sea, and that the Chinese Navy has made "sufficient preparations" to deal with any "sovereignty infringement or provocation".
James Schoff, an Asia expert at the Carnegie Endowment for International Peace, called the recent flight of the nuclear-capable aircraft an "emphatic demonstration" of China's defiance that was created to sap the Philippines of confidence that its USA ally will uphold its defense treaty obligations.
China which boycotted the tribunal angrily rejected its verdict and said the award would not impact its claims over 90 per cent of the resource-rich sea.
These were reportedly organised by locals angered by USA involvement in the South China Sea dispute. It added that the South China Sea dispute, the ongoing Rim of the Pacific exercise and navy-to-navy collaboration will be high on the agenda.
Another small group of activists gathered in front of the Philippine Embassy in Hanoi at around noon with banners that read "Thank you, Philippines, you have a courageous government" and "China, you must comply with worldwide law", Tuyen said.