Beijing is strongly dissatisfied with Tokyo's defense white paper that is "full of groundless accusations" about China's normal military activities, Foreign Ministry spokeswoman Hua Chunying said on Wednesday.
A Japanese submarine visited a former US navy base at Subic Bay in the Philippines on Sunday - the first such visit in 15 years - in a sign of deeper international involvement in territorial disputes in the South China Sea.
Japan's claims that it is having to scramble jets against Chinese planes with record frequency "only serve to remind us of Japan's long-term tracking, surveillance and disturbance of China's ships and aircraft," according to a Chinese defense spokesperson.
China's Ambassador for Disarmament Affairs Fu Cong on Thursday urged Japan to expedite destruction of abandoned chemical weapons in China during World War II.
China on Friday urged the Japanese government to watch its military and security actions and do more things to contribute to regional peace and stability.
Some 45,000 Japanese protestors rallied in front of the country's parliament building in downtown Tokyo, trying to stop a possible passage of the controversial legislation.
Japan on Wednesday launched an unmanned cargo transfer spacecraft that will deliver supplies to the International Space Station (ISS).
Let us hope, therefore, that traditional caution and the simple human sense of self-preservation may yet reassert itself in both Tokyo and Washington.
Some officials in Tokyo deny that Japanese Prime Minister Shinzo Abe will start China visit on Sept 3, the day Beijing holds military parade.
China's State Archives Administration plans to release videos documenting the suffering of sex slaves at the hands of the Japanese military over 70 years ago.
The headquarters of Japan's notorious Unit 731 in Harbin, capital of Heilongjiang province, is scheduled to be open for public viewing.
"Comfort women" is the Japanese euphemism for women who were forced into prostitution and sexually abused at Japanese military brothels before and during World War Two.