Besides, the plain is littered with millions of potsherds, and many of them date back to the Early Iron Age.

此外，平原充满了数以百万计的陶片，其中许多可追溯到早期铁器时代。

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From 2000 B. C to 2 B. C., before the opening up of the Silk Road by Zhang Qian, the history of Xinjiang is referred to as the Bronze Age and Early Iron Age.

从公元前两千年起，一直到公元前2世纪张骞开通丝绸之路，新疆的历史被称为青铜时代和早期铁器时代。

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A iron sword with bronze handle was unearthed in a tomb of Shanrong culture in Yanqing, the age was about the early phase of medium-term of Spring and Autumn period.

延庆山戎文化墓出土了一枚铜柄铁刀，时代约与春秋中期早段相当。

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The remains may be from late Iron Age or early Roman era, an expert said.

BBC: Human and animal remains at the site

Duncan Hawkins, the lead archaeological consultant, said the findings were "typical of a late Iron Age and early Roman farming settlement".

BBC: Human and animal remains at the site