A stock investor follows information in a stock trading hall in Luoyang, central China's Henan Province, May 5, 2015. Chinese shares tumbled on Tuesday, with the benchmark Shanghai Composite Index down by 4.06 percent to finish at 4,298.71 points, and the Shenzhen Component Index fell 4.22 percent to close at 14,233.1 points. (Photo/Xinhua)
