More than 3,000 years ago, a long sword emblazoned with the insignia of Ancient Egypt’s Ramses II — the most powerful pharaoh of the era — was set down in a mud hut somewhere in the Nile Delta.
The Sword of Goujian, named after a legendary Chinese king, emerged from a waterlogged tomb in China's Hubei Province looking as lethal as the day it was crafted. Its secrets lie in its ...