China has intensified its economic pressure on Japan, with state-owned enterprises banning employees from travelling to its Asian neighbour, tour groups and a flagship forum being cancelled and Japanese film releases suspended.

Film distributors have suspended the screening of at least two Japanese films in China amid a deepening dispute between Tokyo and Beijing, in what state broadcaster CCTV said was a "prudent decision" that took into account souring domestic audience sentiment.

Tension between Japan and China has escalated over the new Japanese leader's suggestion Tokyo could intervene militarily if Beijing attacks Taiwan.

Japan's Trade Minister Ryosei Akazawa said on Tuesday there are currently no particular changes in China's export control measures on rare earths and other materials. Akazawa's remarks come as Japan seeks to ease tensions with China amid an escalating dispute over Taiwan.

Japan's tourism-related stocks fell amid worsening diplomatic standoff between the two nations after Beijing issued a travel and study advisory.

China sent Coast Guard ships near disputed islands and warned travelers and students about safety risks in Japan. The escalation is over comments on Taiwan by Japan’s new prime minister.

China and Japan have repeatedly faced off around the Japan-administered islands, which Beijing calls Diaoyu and Tokyo calls the Senkaku.