Chinese Ambassador to Egypt Song Aiguo speaks during an interview about the 70th anniversary of the Cairo Declaration in Cairo, capital of Egypt, on Nov. 30, 2013. Song Aiguo said on Saturday that the Cairo Declaration cements the legal foundation for the solution to the China-Japan territorial disputes over the Diaoyu Island. (Xinhua/Cui Xinyu)

Chinese Ambassador to Egypt Song Aiguo speaks during an interview about the 70th anniversary of the Cairo Declaration in Cairo, capital of Egypt, on Nov. 30, 2013. Song Aiguo said on Saturday that the Cairo Declaration cements the legal foundation for the solution to the China-Japan territorial disputes over the Diaoyu Island. (Xinhua/Cui Xinyu)

Chinese Ambassador to Egypt Song Aiguo speaks during an interview about the 70th anniversary of the Cairo Declaration in Cairo, capital of Egypt, on Nov. 30, 2013. Song Aiguo said on Saturday that the Cairo Declaration cements the legal foundation for the solution to the China-Japan territorial disputes over the Diaoyu Island. (Xinhua/Cui Xinyu)