structural:summarization
Pottery

The period between the end of the third millennium and the middle of the first millennium BC produced increasingly sophisticated pottery of the pre-Dong Son cultures of northern Viet Nam and the pre- Sa Huỳnh cultures of southern Vietnam. This period saw the appearance of wheel-made pottery, although the use of the paddle and anvil remained significant in manufacture. Vessel surfaces are usually smooth, often polished, and red slipping is common. Cord-marking is present in all cultures and forms a fairly high percentage of sherdage. Complex incised decoration also developed with rich ornamental designs, and it is on the basis of incised decoration that Vietnamese archaeologists distinguish the different cultures and phases one from another.

The pottery from the successive cultural developments in the Red River Valley is the most well known. Vietnamese archaeologists here discern three pre-Đông Son cultures: Phùng Nguyên, Đồng Đậu, and Gò Mun. The pottery of these three cultures, despite the use of different decorative styles, has features that suggest a continuity of cultural development in the Red River Valley. In the Ma River Valley in Thanh Hóa Province, Vietnamese archaeologists also recognize three pre-Dong Son periods of cultural development: Con Chan Tien, Dong Khoi (Bai Man) and Quy Chu. In the areas stretching from the Red to the Cả River valleys, all the local cultures eventually developed into the Đông Sơn culture, which expanded over an area much larger than that of any previous culture and Vietnamese archaeologists believe that it had multiple regional sources. For instance, while Đông Sơn bronzes are much the same in different regions of northern Viet Nam, the regional characters of the pottery are fairly marked. On the whole, Đông Sơn pottery has a high firing temperature and is varied in form, but decorative patterns are much reduced in comparison with preceding periods, and consist mainly of impressions from cord-wrapped or carved paddles. Incised decoration is virtually absent.