If, Hai Dai Historical Cultural Area, which is so called by archaeologists, can be restated as Dongyi Histoical Cultural Area, its formation period should fall into the middle and late stage of Dawenkou Culture.

• 考古学者所称的海岱历史文化区,如果转称为东夷历史文化区,其形成年代当定位于考古的大汶口文化中晚期阶段。