A man sits at a trading hall in a securities firm in Jiujiang, east China's Jiangxi Province, Feb. 21, 2013. Chinese stocks plunged onThursday, with the benchmark Shanghai Composite Index slumped 2.97 percent, or 71.23 points, to end at 2,325.95. The Shenzhen Component Index declined 2.59 percent, or 249.76 points, to 9,396.11. [Xinhua]