
Anti-Japanese protesters are confronted by police as they demonstrate over the disputed Diaoyu Islands, on September 16, 2012 in Shenzhen, China.
China's worst outbreak of anti-Japan sentiment in decades led to weekend demonstrations and violent attacks on well-known Japanese businesses such as car makers Toyota and Honda, forcing frightened Japanese into hiding and prompting Chinese state media to warn that trade relations could now be in jeopardy.
Another outbreak of anti-Japan sentiment is expected across China on Tuesday, the anniversary of Japan's 1931 occupation of parts of mainland China.
"I'm not going out today and I've asked my Chinese boyfriend to be with me all day tomorrow," said Sayo Morimoto, a 29-year-old Japanese graduate student at a university in Shenzhen.
Chinese Foreign Ministry spokesman Hong Lei said the government would protect Japanese firms and citizens and called for protesters to obey the law.
"The gravely destructive consequences of Japan's illegal purchase of the Diaoyu Islands are steadily emerging, and the responsibility for this should be born by Japan," he told a daily news briefing. The islands, called the Senkaku by Japan and Diaoyu by China.
China and Japan, which generated two-way trade of $345 billion last year, are arguing over the uninhabited islets in the East China Sea, a long-standing dispute that erupted last week when the Japanese government decided to buy some of them from a private Japanese owner.
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