In North Vietnam in the 1950s there were a few major historiographical debates that took place between scholars, and which were published in two journals: Tập san Đại Học Sư Phạm and Tập san Nghiên cứu Văn Sử Địa.

One of the debates was about when the Vietnamese nation had formed. This video summarizes that debate (as an imaginary conversation between children in a schoolyard):