Complex sentence: The second section starts from Jiaochuan hub and ends in Yadanshan Dock, comprising of 5 cross-sea bridges and was open to traffic on December 25,2009.
Split into simpler sentences: The second section starts from the Jiaochuan hub and ends at the Yadanshan Dock. It contains 5 cross-sea bridges, and was opened to traffic on December 25,2009.