Chinese shares tumbled on Tuesday after nearly one-week rise, with the benchmark Shanghai Composite Index (SCI) plunging more than five percent to dive below the 3,000-point psychological mark again. The benchmark Shanghai Composite Index nosedived 5.43 percent to finish at 2,856.27 points. The Shenzhen Component Index closed at 10,116.49 points, down 4.15 percent.Photo above shows an investor looks through stock information at a trading hall of a securities firm in Hefei, capital of east China's Anhui Province, December 9, 2014. (Eastday/Jiang Wenran)