SAN DIEGO – More than 300 Chinese and Chinese-Americans cheered and waved the two nations' flags Monday morning on a pier at San Diego Naval Base, a noisy greeting for two Chinese navy ships making a rare visit to U.S. mainland port. Hundreds of Chinese sailors in white uniforms with blue neckerchiefs stood stiffly at the rails of the destroyer Qingdao and the auxiliary ship Hongzehu as they cruised into port. It was only the second visit ever of People's Liberation Army vessels to San Diego, and the first since 1997. Chinese-American dancers and drummers entertained before a pierside ceremony....