China's Ministry of National Defense on Tuesday confirmed that Guo Boxiong, vice-chairman of the Central Military Commission, can hardly make the trip to Japan because of a "work commitment".

The Information Office of the National Defense Ministry told China Daily that China attaches great importance to its friendship and cooperation with Japan cheap ray bans, and Beijing has had working-level discussions with Japan about Guo's visit.

Guo's trip was originally planned to start on May 24 and would have also included a meeting with Japan's Prime Minister Yoshihiko Noda and visits to the base of Japan's Self-defense Forces.

Japan's Kyodo News agency on May 19 cited a diplomatic source saying the issue of the Diaoyu Islands and the meeting of the World Uyghur Youth Congress held in Japan were reasons for the postponement.