Four China Coast Guard (CCG) vessels patrolled territorial waters surrounding the Diaoyu Islands on Thursday, according to the State Oceanic Administration.
Japanese Cabinet is expected make a decision on whether to revise the government's stance on Japan's right to exercise collective self-defense.
A Chinese spokesman on Monday urged the Wall Street Journal to be impartial on the Diaoyu Islands dispute after the US newspaper carried an article pushing the US to endorse Japan's claims explicitly.
By playing up the "China threat" theory Abe's real intention is to promote the transformation of the Japan Self-Defense Force into a regular army.
Moscow expressed displeasure with the expanding US-Japanese alliance in the Asia-Pacific region.
Japan unleashed a 14-0 fury at the end of the first quarter to effectively seal the issue as Japan made it to their first FIBA Asia Women's Championship final in 10 years after beating Chinese Taipei 74-56 here on Saturday.
Washington has made a clarification to Beijing to dismiss a Japanese media report on a so-called US-Japan joint combat plan for "retaking" China's Diaoyu Islands, the Foreign Ministry confirmed on Friday.
If Japan plays an important role in Asia's security affairs, relations between countries will deteriorate, said an article in People's Daily.
The Ministry of National Defense said on Thursday that a Japan Maritime Self-Defense Force ship intruded into a Chinese military exercise in the open sea.
Chinese Defense Ministry spokesman said Japan's surveillance of a zone used by the Chinese navy for drills is "a highly hazardous act of provocation."
Japan's Asahi Glass, one of the world's major glassmakers, is looking to cash in on going green in China.
The Chinese Foreign Ministry on Tuesday urged Japan to stop hyping up external threats and explain the true intent of its military buildup.