Artifacts in Ancient Chinese City Reveal Superb TechnologySuperb drilling technology and the world's earliest stone drill bits were found at site Epoch Times Staff Apr 01, 2006 A worker looks over an excavation site. (Frederic J. Brown/AFP/Getty Images)In Lingjiatan, Hanshan County of Anhui Province in China, archaeologists have discovered a primitive tribal site that was inhabited 5,000 years ago. Superb drilling technology and the world's earliest stone drill bits were found at the site. Archaeology professor Zhang Jingguo said there are still many mysteries in the Lingjiatan ruins waiting to be solved. The Lingjiatan ruins are located in Lingjiatan Village,...
