More than 50 cities in China saw massive anti-Japan protests carry on for a second day, with the Japanese embassy and several Japanese businesses coming under attack.

Protestors in Beijing pelted the Japanese embassy with eggs and bottles as riot police held back crowds from storming the building. Protestors shouted slogans such as, "Return our islands! Japanese devils get out!" and held signs that read, "For the respect of the motherland, we must go to war with Japan."

The protests prompted US Defence Secretary to comment,

"I am concerned that when these countries engage in provocations of one kind or another over these various islands, that it raises the possibility that a misjudgement on one side or the other could result in violence, and could result in conflict."

Migrant worker Liu Gang, who attended the protests said, "We hate Japan. We've always hated Japan. Japan invaded China and killed a lot of Chinese. We will never forget."

Protestors allegedly stormed a dozen Japanese-run factories in eastern Qingdao, as well of reports of attacks on Japanese restaurants and cars.

Japanese Prime Minister Yoshihiko Noda has since stated,

"Regrettably, this is a problem concerning the safety of Japanese nationals and Japan-affiliated companies... I would like to urge the Chinese government to protect their safety."

The protests look set to continue for days and could worsen with China marks planning on officially marking September 18 memorial day for Japan's war-time occupation of parts of China.