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Oldest Known Steel Acupuncture Needles Discovered in Disgraced Emperor’s Tomb

Summary by Popular Science
Ancient Chinese medical texts like the Huangdi Neijing suggest acupuncture was first developed at least 2,500 years ago. Those tools would not become perfected until blacksmiths discovered advanced crafting techniques like steelmaking around 400 BCE. Now, recent archeological work at the famous tomb of Liu He—better known as the Marquis of Haihun—has yielded what researchers believe are the oldest known steel acupuncture needles. While they aren…

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Signs of the Times broke the news in on Sunday, July 6, 2025.
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