Singer Song Zuying sings during a concert in Qingdao, east China's Shandong Province, April 23, 2012. Various activities were held on Monday here by soldiers who were involved in the recent Russia-China joint naval exercise, to celebrate the 63rd founding anniversary of the Chinese navy. [Xinhua]

Russian naval deputy chief of staff Rear Admiral Leonid Sukhanov (2nd R) and Ding Yiping (3rd R), deputy commander of the Navy of the Chinese People's Liberation Army watch performance during an event in Qingdao, east China's Shandong Province, April 23, 2012. Various activities were held on Monday here by soldiers who were involved in the recent Russia-China joint naval exercise, to celebrate the 63rd founding anniversary of the Chinese navy. [Xinhua]

Russian marines attend a flag raising ceremony in Qingdao, east China's Shandong Province, April 23, 2012. Various activities were held on Monday here by soldiers who were involved in the recent Russia-China joint naval exercise, to celebrate the 63rd founding anniversary of the Chinese navy. [Xinhua]

Chinese marine soldiers show battle skills during an event in Qingdao, east China's Shandong Province, April 23, 2012. Various activities were held on Monday here by soldiers who were involved in the recent Russia-China joint naval exercise, to celebrate the 63rd founding anniversary of the Chinese navy. [Xinhua]

Russian marine soldiers watch performance in Qingdao, east China's Shandong Province, April 23, 2012. Various activities were held on Monday here by soldiers who were involved in the recent Russia-China joint naval exercise, to celebrate the 63rd founding anniversary of the Chinese navy. [Xinhua]