A photo taken from the air shows the excavation of ruins of a settlement dating to the Warring States Period (475-221 BC) in Chengdu City, the capital of Southwest China's Sichuan Province. (Photo: China News Service/Zhong Xin)
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A photo taken from the air shows the excavation of ruins of a settlement dating to the Warring States Period (475-221 BC) in Chengdu City, the capital of Southwest China's Sichuan Province. (Photo: China News Service/Zhong Xin)
