Context
The neighbouring Xindian culture was roughly contemporary with the Siwa culture, and was influenced by it. Some scholars hold that Siwa culture descended from the Qijia culture. There are also those who believe that the culture was a remnant of Xunyu, which is associated with the Xianyun people. However, questions are raised against this theory since Siwa sites are small with low subsistence levels. According to archaeologists, these could not have sustained an advanced society like the Xianyun.Geography
Siwa culture is divided into two types – Siwa and Anguo. The former is distributed along the Tao River (Taohe) and the latter along the Wei River. The Siwa type is somewhat earlier than the Western Zhou dynasty, while the Anguo type is more or less contemporaneous with it. One of Siwa culture's main characteristics is pottery with saddle-shaped openings (), It is also distinguished by its bronze objects. Since 2006, the Siwa site () is on the list of the People's Republic of China's archeological monuments.References
Further reading
*Nicola Di Cosmo (1999), ''The Northern Frontier in Pre-Imperial China//The Cambridge History of Ancient China: From the Origins of Civilization to 221 BC'', Edited by M.Loewe and E.L.Shaughnessy. {{Prehistoric cultures of China Archaeological cultures of China Bronze Age in China History of Gansu 1924 in China Zhou dynasty 14th-century BC establishments