We're all familiar with the concept of modern technology having ancient Chinese analogues. But a 2002 discovery in remote Qinghai province is anachronistic enough to constitute an OOPart. Out-of-place-artifacts are so unusual, or found in such improbable contexts, that mainstream science has no plausible explanation for them. The crystal skulls of Mexico referenced in the latest Indiana Jones movie, the iron pillar of Delhi, and the ancient Greek Antikythera mechanism are examples of OOPart yet to be explained. Like these, the pipes of Qinghai's Mount Baigong suggest a level of technology simply inconceivable for the apparent era of their manufacture. Those...