“后元”之年的确定对于根据古本《纪年》来订正战国后期纪年是一重要的标尺。

To fix the beginning year of Post Yuan is very important for the correction of late Warring States chronology.

youdao

内蒙古蒙元文化博物馆收藏一件有明确纪年的元代铜火铳，该器发现于元上都遗址东北达特淖日之东。

The gun in the collection of the Shangyuan Museum in Inner Mongolia is a clearly dated one discovered to the east of Datnor near the site of Upper Capital of the Yuan.

youdao

内蒙古蒙元文化博物馆收藏一件有明确纪年的元代铜火铳，该器发现于元上都遗址东北达特淖日之东。

The gun in the collection of the Shangyuan Museum in Inner Mongolia is a clearly dated one discovered to the east of Datnor near the site of Upper Capital of the Yuan.

youdao