In order to verify the era in which the Chuping people lived, Chen sent more than 20 samples of charcoal abroad for carbon-14 dating. Most were discovered to be remains from 1,000 to 2,750 years ago.
陳仲玉為了確定曲冰人生存的年代，將所得木炭樣本廿多個送往國外做碳十四測試，結果發現多數為一千到二千七百五十年之前所遺留。