An ancient sword-making technique has helped Chinese engineers solve a major ... A technique used in making the 2,500-year-old "Sword of Goujian" offered a solution, according to a report from ...

Excavated from a site close to Sanmenxia, a city in Henan Province, China, the skeletons date to between 2,300 and 2,500 years old, placing ... As for the two Chinese men who paid for their ...