Wang Zhenzhen (L), student from the Dalian Naval Academy, shakes hands with US naval soldier Krystyna Nowakowski after the Chinese Navy's training vessel "Zhenghe" arrived in the Pearl Harbor, Hawaii, the United States, Oct 12, 2015. The Chinese navy's training vessel "Zhenghe" arrived Monday in Pearl Harbor, Hawaii, starting a four-day goodwill visit to the US. [Photo/Xinhua]