我国有很长的海岸线,自古以来航海事业就很发达。唐、宋王朝时有了繁盛的海上交通。元朝时,海上交通更为发达。到了明代,我国出现了震惊世界的郑和七次下西洋的壮举。郑和,本姓马,字三保,1371年出生于云南昆阳(今昆明晋宁),回族,是伊斯兰教创 Our country has a long coastline and the maritime industry has developed since ancient times. During the Tang and Song dynasties, there was prosperous maritime traffic. During the Yuan Dynasty, maritime traffic was more developed. In the Ming Dynasty, Zheng He, who shocked the world, appeared seven times in the Western World. Zheng He, whose surname is Ma and the word San Bao, was born in 1371 in Kunyang, Yunnan (now Jinning, Kunming). The Hui nationality is an Islamic creator.