97. The Bronze Age While on an expedition in western China twenty years ago， some explorers discovered the mummies of a tall， red-haired people. Though estimated to be nearly 4，000 years old， the corpses were quite well preserved. Scientists are excited because these mummies are a link between the East and the West. What were redheads doing in China and who were they？ Though the answers to these questions may never be answered with certainty， these mummies provide new information about the Bronze Age， when men used tools and weapons made of bronze. This was the period between the Stone Age and the Iron Age. As the explorers continue their work， new mysteries are waiting to be discovered.