Sailing Power Risk of Sealing Boat in Ming and Qing Dynasties and Mission Prevention Strategy
During the Ming and Qing dynasties,there were frequent exchanges between China and Ryukyu.As an official chan-nel established by China,the Chinese envoys crossed the East China Sea dozens of times and exchanged with each other.The natural environment of the China-Ryukyu sea route is complicated.And the travel of the envoys had not only the danger of pira-cy,but also the danger of rough seas and broken ships.In order to cope with the risks caused by the natural forces during the voyage,the Chinese envoys took preventive measures such as improving the performance of the boat,improving navigation tech-niques,selecting talents and storing emergency supplies.While ensuring the safety of the voyages,these preventive measures al-so had a positive impact on the shipbuilding,and navigation technology,culture,and agriculture of Ryukyu,and promoted the development of the vassal relationship between China and Ryukyu.
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