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Yueyang city relics in Xi'an, Shaanxi province -- Warring States Period (475-221 BC) to Han Dynasty (206 BC-220 AD). [Photo provided to China Daily]

Archaeologists uncovered a rare basement and fireplace in the ruins of Yueyang, capital of the Qin state during the Warring States Period (476 BC-221 BC).

The remains are in Yanliang district in Xi'an, Northwest China's Shaanxi province.