Over a period of 28 years, Zheng He visited more than 40 countries spanning from his homeport of Nanjing, China all the way to Mogadishu in southern Africa.

• 论航海技术，西方国家要等到第一次世界大战后才能追上。除了成为航海的先行者外，郑和曾先后多次调解到访地区的政治纷争。