春秋战国时期,诸侯纷争,群雄逐鹿。那时的社会制度,正处于重大的转型时期,封建制度作为先进的社会制度已经萌芽,谁抓住了这个历史机遇,创新制度,促进社会生产力的发展,谁就能当仁不让地成为历史的主宰;明朝永乐宣德年间,郑和以锲而不舍的精神,奉诏七下西洋,首次启用星象定位、磁针定向、铅锤测探等现代航海术,行驶二十八年,行程十万余里,开辟了中国古代史上最长的远洋航道,使当时中国的科技技术闻名遐迩,至今影响深远;清朝乾隆中后期,清朝统治思想由保守内收代替了前期的革新进取,进入19世纪后,长期实行闭关锁国政 Spring and Autumn Period, princes strife, crowded. At that time, the social system was in a period of major transformation. The feudal system, as an advanced social system, was already in its infancy. Whoever took this historical opportunity, innovated the system and promoted the development of social productive forces, Ming Dynasty Yongle Xuande years, Zheng He with perseverance, Feng Chao seven under the West, the first opening of the star positioning, needle orientation, plumb-hunting and other modern navigation, driving twenty-eight years, the journey of more than one hundred miles, opened up The longest ocean-going fairway in ancient Chinese history made China’s science and technology famous at that time and has far-reaching impact so far. In the middle and late Qing and Qianlong Dynasties, the Qing Dynasty’s ruling thought was replaced by the conservative adduction and reform in the early days. After the 19th century,