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/Zha Chunming)

Chinese 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/Zha Chunming)