Zheng He's seven voyages to the "Western Ocean," undertaken over a 28-year period, were the largest such expeditions ever dispatched from China. They represented the peak of China's accomplishments as a sea power and marked a milestone in world maritime history.
事實上，「鄭和下西洋」的確是中國歷史上由官方派遣、規模最大、也是絕無僅有的一次洲際遠航，在短短二十八年中，七次南下，不但代表中國海權時代的輝煌時期，也是世界海洋史上的重要里程碑。