We close out our three part series on the amazing life of Admiral Zheng He and his seven voyages. This time the CHP looks at retired submarine commander Gavin Menzies and his take on what Zheng He achieved.  He makes some wild claims that have been savagely attacked by educated people around the world.  If not for the fact that early Ming China was advanced enough to carry out these voyages, as Menzies said they happened, they’d be very hard to believe.  The debate is far from closed on this subject.