The military said on Tuesday it "reserves the right" to take action on the Diaoyu Islands after the Japanese government ignored warnings from Beijing and "purchased" three of the islands, which belong to China.
Beijing on Wednesday urged Tokyo not to take any action that could endanger Chinese lives or property, including those of Taiwan compatriots.
China has urged Japan not to take any action that could endanger the safety of Chinese lives and property following a Taiwan vessel's entry to waters near the Diaoyu Islands.
Joint effort, cooperation and exchange will plays key roles in developing China-Japan relations, said Wang Chen, minister of the Information Office of the State Council, during the opening ceremony of the Eighth Beijing-Tokyo Forum.
Zhao Qizheng (R), presents a traditional Chinese painting titled "to help each other and overcome the difficulties" to Yuji Miyamoto, former Japanese Ambassador to China during a welcome dinner for the eighth Beijing-Tokyo Forum.
Zhan Qixiong, the Chinese trawler captain who was illegally detained by Japan, is welcomed at his hometown in southeast China's Fujian province, Sept 27, 2010.