Ming rule saw

Ming rule saw the construction of a vast navy and a standing army of one million troops.[3] Although private maritime trade and official tribute missions from China had taken place in previous dynasties, the tributary fleet under the Muslim eunuch admiral Zheng He in the 15th century far surpassed all others in size. There were enormous construction projects, including the restoration of the Grand Canal and the Great Wall and the establishment of the Forbidden City in Beijing during the first quarter of the 15th century. Estimates for the late-Ming population vary from 160 to 200 million.[badeværelse
Marine Phytoplankton