Workers pour concrete on the top of the 170-meter-high main tower of the Jiaxing-Shaoxing (Jiashao) Bridge on the Hangzhou Bay, east China's Zhejiang Province, Feb. 22, 2012. As the second cross-sea bridge spanning across the Hangzhou Bay, the Jiashao Bridge is expected to enter operation by the end of 2012. It will halve the travel time down to 1.5 hours between Shaoxing in Zhejiang and east China's Shanghai. [Xinhua]