Map of Coastal Defense Stretching Thousands of Miles (Wan Li Hai Fang Tu) (segment)

This map was drawn in 1561 (the 40th year of the reign of Emperor Jiajing of the Ming Dynasty) and was collected in the eighth volume of Collected Works of Zheng Kaiyang (Zheng Kai Yang Za Zhu). The map shows that Diaoyu Dao, Huangwei Yu and Chi Yu have been included in the jurisdiction of China’s coastal defense.