In 1405, zheng he sent envoys to (native with a fleet of yunnan) mission western. At that time the western refers to the west of south China sea of the coastal areas. Zheng he's brought twenty thousand DuoRen, in addition to soldiers and sailors outside, and officials at all levels, technical personnel, translation and the doctor. They took 62 ship from the article, jiangsu province of fujian province taicang, through the coastal vastly sail south. Zheng he each to a country, he put in to the country's letter submitted the king, and brought the gift to them, hope to establish friendly relations with them. Three years later, he took the angel of the western countries returned to China, Ming emperor saw this voyage so successful, very happy. In the later twenty DuoNian, Ming emperor again and again to western countries zheng he sent. Zheng he's seven times before and after go out to sea, to the Indian Ocean DuoGe 30 countries, had reached farthest in Africa. Zheng he's seven trips that at that time, China shipbuilding and navigation technology has reached very high levels. More important is, it broke the between the east and the state is relatively isolated from the, let foreigners understand more about China.
1405年，明成祖派郑和（祖籍云南）带领一支船队出使西洋。那时的西洋指的是我国南海以西的沿海各地。郑和一共带了两万多人，除了士兵和水手外，还有各级官员、技术人员、翻译和医生。他们乘坐62条大船，从今江苏的太仓出发，经过福建沿海，浩浩荡荡地扬帆南下。郑和每到一个国家，就把明成祖的信递交给该国的国王，并把带去的礼物送给他们，希望同他们建立友好关系。三年后，郑和带着西洋各国的使者回到了中国，明成祖见这次远航这么成功，非常高兴。在以后的二十多年里，明成祖一次又一次地派郑和前往西洋各国。郑和前后出海7次，到过印度洋沿岸的三十多个国家，最远还曾到达过非洲。郑和七次下西洋，说明我国当时的造船和航海技术已经达到了很高的水平。更重要的是，这一事件打破了东西方之间相对隔绝的状态，让外国人更多地了解了中国。

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