Beijing warned Washington on April 8 to "stay vigilant" about Japan and not to be "permissive or supportive" of Tokyo's provocations as Chinese and US defense chiefs vowed wider cooperation in the Asia-Pacific region.
Premier said China will give full support to initiatives that strengthen maritime cooperation while also responding firmly to provocations that undermine peace and stability in the South China Sea.
Chinese Defense Minister Chang Wanquan said on Tuesday, when answering a question about the regional security situation, that there are some people "stirring up trouble" around China.
The Philippines' groundless filing for international arbitration concerning the South China Sea disputes will prove futile.
China on Tuesday urged the United States to stop its irresponsible remarks on the Ren'ai Reef and its encouragement of provocation by countries involved in disputes over the sovereignty of the reef.
China will neither accept nor participate in international arbitration unilaterally pushed forward by the Philippines on the South China Sea disputes, said a commentary published on Tuesday's People's Daily.
Beijing said on Monday it was "startled" by Manila's recent statement that it would use a warship grounded in Chinese territory as "a permanent Philippine government installation".
China on Thursday accused the United States of making misleading comments on a disputed South China Sea reef.
China said on Friday that it will never trade off its sovereignty and territory.