During the brief period from 1405 to 1433, seven epic expeditions brought China's "treasure ships" across the China Seas and the Indian Ocean, from Taiwan to the spice islands of Indonesia and the Malabar coast of India, on to the rich ports of the Persian Gulf and down the African coast, China's "El Dorado," and perhaps even to Australia, three hundred years before Captain Cook was credited with its discovery. With over 300 ships-some measuring as much as 400 feet long and 160 feet wide, with upwards of nine masts and twelve sails, and combined crews sometimes numbering over 28,000 men-the emperor Zhu Di's fantastic fleet was a virtual floating city, a naval expression of his Forbidden City in Beijing. The largest wooden boats ever built, these extraordinary ships were the most technically superior vessels in the world with innovations such as balanced rudders and bulwarked compartments that predated European ships by centuries. For thirty years foreign goods, medicines, geographic knowledge, and cultural insights flowed into China at an extraordinary rate, and China extended its sphere of political power and influence throughout the Indian Ocean.



