The trip of 2,200 Chinese tourists to Japan has sparked an online controversy as many Internet users called for a tourism boycott of the island nation.
Special: Dispute over Diaoyu Islands
Japanese politicians' latest visits to a controversial war shrine would worsen relations between the country and its neighbors.
Former senior US officials briefed Tokyo on Monday on Washington's unchanged support for the US-Japan alliance amid the territorial row between China and Japan over the Diaoyu Islands in the East China Sea.
A U.S. delegation currently visiting Beijing is not entitled to mediate between China and Japan over the Diaoyu Islands dispute, a Foreign Ministry spokesman clarified on Monday.
Four Chinese marine surveillance ships patrolled in waters off the Diaoyu Islands on Sunday.
China on Friday held a large-scale drill simulating the PLA protecting Chinese administration ships disturbed by foreign ships in the East China Sea.
Dispute hurts investment, trade with Japan
Row takes toll on cultural and travel sectors
Workers with the China Maritime Surveillance East China Sea aviation fleet prepare for take-off at Zhoushan base in the eastern province of Zhejiang on Oct 17, 2012. The fleet has been regularly patrolling the islands in the East China Sea since 2010, when China's law on island protection went into effect.
Dozens of Japanese lawmakers, including two cabinet members, visited a Tokyo shrine that honors war criminals, sparking anger in Beijing and Seoul.
A Chinese film has pulled out of this year's Tokyo International Film Festival over the ongoing Diaoyu Islands dispute, the film's distributor said on Thursday.
The Chinese navy will conduct a joint exercise in the East China Sea with the fishery administration and marine surveillance agency on Friday.
The leader of Japan's main opposition party visited the controversial Yasukuni Shrine in a move that will raise tensions already heightened by the Diaoyu Islands.
Shrine-worshipping a 'show of militarism'
Japanese ministers visit controversial Shrine
China reiterated its solemn stance on the Diaoyu Islands, as US Deputy Secretary of State William Burns visited China on Wednesday.