Scientists discovered why the Chinese "Terracotta Army" is so well preserved after 2,000 years. The find debunks a popular idea among fans of "ancient lost technology" that Qin smiths intentionally used chromium to preserve the warriors.

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Scientists discovered why the Chinese "Terracotta Army" is so well preserved after 2,000 years. The find debunks a popular idea among fans of "ancient lost technology" that Qin smiths intentionally used chromium to preserve the warriors.