"China firmly safeguards navigation freedom of various countries in the South China Sea in accordance with international laws," Foreign Ministry spokesperson Hong Lei told a press briefing on Friday.
"In the meantime, China is strongly against any country using the excuse of navigation and overflight freedom to engage in activities threatening the sovereignty and security of other nations, and facilitating regional militarization," said Hong.
Japanese President Abe made the remark to Obama on the sidelines of the Asia-Pacific Economic Cooperation summit on Thursday, reported the Japan Times.
"With regard to activity by the Self-Defense Forces in the South China Sea, I will consider it while focusing on what effect the situation has on Japan's security," Abe reportedly said.
"We have no plans for our Self-Defense Forces to take part in US freedom of navigation operations," said the spokesman, and added that Japan is not conducting nor preparing to conduct patrols in the South China Sea.
Chinese Vice FM Zhang Yesui summons US ambassador to China Baucus to protest over US warship entered South China Sea pic.twitter.com/QgPK6SkUn3— People's Daily,China (@PDChina) 27 октября 2015
The spokesman also said that the Japanese leader expressed support for the US decision to last month send its USS Lassen destroyer within 12 nautical miles [21km] of Subi Reef in the Spratly Islands archipelago. China claims the islands as its territory, but some of them are also subject to territorial claims from other countries in the Pacific region. China called the incursion by the destroyer "blatant provocation," and complained to the US ambassador in China.