BEIJING, July 30 -- Leonardo da Vinci's drawings of machines are uncannily similar to Chinese originals and were undoubtedly derived from them, says a British amateur historian in his new book.

    Gavin Menzies created headlines across the globe in 2002 by claiming Chinese sailors had reached America 70 years before Christopher Columbus.

    Now he says a Chinese fleet brought encyclopedias of technology not known to the West to Italy in 1434 and laid the foundation for the engineering marvels such as flying machines, later drawn by the Italian polymath Leonardo da Vinci.

    "Everything known to the Chinese by the year 1430 was brought to Venice," says Menzies, a retired Royal Navy submarine commander.

    From Venice, a Chinese ambassador went to Florence and presented the material to Pope Eugenius IV, Menzies says.

    "I argue in the book that this was the spark that really ignited the Renaissance and that Da Vinci and (Italian astronomer) Galileo built on what was brought to them by the Chinese. Da Vinci basically redrew everything in three dimensions, which made a vast improvement."

    If accepted, the claim would force an "agonizing reappraisal of the Euro-centric view of history", Menzies says in the book, 1434: The Year A Magnificent Chinese Fleet Sailed To Italy and Ignited The Renaissance.

    China's legendary sailor Zheng He began his famous journeys in 1405, and made a dozen trips to many parts of the world for 28 years. Which means the Chinese fleet would have made the journey a year after Zheng He brought down his sails.

    The urbane 70-year-old Menzies sold more than 1 million copies of his first book, 1421, which argued Chinese sailors mapped the world in the early 1400s shortly before abandoning global seafaring.

    His theories are dismissed as nonsense by many academics, but have gained a global following among readers.

    "This whole fantasy about Europe discovering the world is just nonsense," Menzies says.

    In his latest book, published in the US in June and this month in Britain, he says four ships from the same Chinese expeditions reached Venice, carrying with them world maps, astronomical charts and encyclopedias far in advance of anything available in Europe at the time.

    Menzies says Da Vinci's designs for machines can be traced back to this transfer of Chinese knowledge. The great painter and polymath was born in 1452 and is best known for his enigmatic Mona Lisa. But he also left journals filled with intricate engineering and anatomical illustrations.

    Menzies says designs for gears, waterwheels and other devices contained in the Chinese encyclopedias reached Da Vinci after being copied and modified by his Italian Renaissance predecessors Taccola and Francesco di Giorgio.

    To support his argument, Menzies has published drawings of siege weapons, mills and pumps from a 1313 Chinese agricultural treatise, the Nung Shu, and from other pre-1430 Chinese books, next to apparently similar illustrations by Da Vinci, Di Giorgio and Taccola.

    "By comparing Da Vinci's drawings with the Nung Shu we have verified that each element of a machine superbly illustrated by the Italian polymath had been illustrated by the Chinese in a much simpler manual earlier," Menzies writes.

    "It's very suggestive, very interesting, but the hard work remains to be done," says Martin Kemp, professor of History of Art at Oxford University and author of books on Da Vinci.

    "He (Menzies) says something is a copy just because they look similar," Kemp says. "It's not strong on historical method."

    (Source: China Daily/Agencies)