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修改如下：Zheng He is the great navigator,in China's history and the forerunner of the world cultural exchanges。In 1405-1433,28 years,Zheng He led seven of the Western world fleet,and expand the way China,Asia and Africa more than 30 countries and regions marine traffic to the world maritime industry development and the exchange of peoples made an indelible contribution。。。。Zheng He had seven times to the Western world,his largest rate of over 200 ships,27,000 personnel of people,the main route up to more than 400,a 160,000-mile journey,is the largest in the world of ancient navigation history,the widest range of offshore sailing action。Zheng He in 1405,the first Western world than Columbus discovered America 87 years before Columbus,92 years earlier than Vasco read the Cape of Good Hope,114 years earlier than Magellan global navigation,he undoubtedly in the history of human civilization and the world,writing a glorious page in the history of navigation。。。。Zheng He seven times to the Western world,combed through Asia and Africa more than 30 countries and regions in international transport from China to be opened along the Red Sea and East Africa to the first fairway。In his fifth of the Western world,to the tender red Haikou,East Africa Ma Lin,wood bones are beams,El gill Oh,gill withdrawal;In the sixth,Western world,and the Arabian Sea to the ancestral law abuse;In the seventh,Western world,has also dispatched Tongshi seven days in the Red Sea side。In Zheng He,the Chinese envoy,businessmen and Parade may have visited Eastern Europe,the Arabian Peninsula,or even in Africa Egypt,but to the land rather than sea lanes are。Chinese fleet led by the Red Sea and East Africa to the vicinity,Zheng He is the first person。