Undated photo shows a piece of shipwrecked relic of the Dingyuan Battleship, the flagship vessel of the Beiyang Fleet of the Qing Dynasty (1644-1912) sunk in the First Sino-Japanese War. Chinese archeologists said Monday they have confirmed the wreck site of a Chinese battleship sunk in the Yellow Sea by the invading Japanese fleet in 1894. (Underwater Cultural Heritage Conservation Center of China National Cultural Heritage Administration/Handout via Xinhua)