China's navy officers sent out to the Gulf of Aden for the eighth anti-piracy mission wave goodbye aboard a missile destroyer in Zhoushan, East China's Zhejiang province, Feb 21, 2011. [Photo/Xinhua]
Missile destroyers "Wenzhou" and "Ma'anshan" are ready to set sail to the Gulf of Aden at an East China's port in Zhejiang province, Feb 21, 2011. [Photo/Xinhua]