The Erligang-period site known as Zhengzhou Shang City shows multiple phases dated roughly 1630–1400 BCE, and is often interpreted as one of the major early Shang urban/craft centers (possibly a capital among several).
Archaeological and scientific-chronology work has linked the emergence of an early Shang state with the founding of a major Erligang-culture walled city at Yanshi, used as a key marker for the Shang’s formation around this time.
Material culture associated with early Shang (often discussed via the Erligang archaeological horizon) appears widely across the North China Plain, indicating a rapid regional consolidation beyond a single center.
Early Shang urbanism is marked by large-scale rammed-earth walls and planned precincts, evidenced prominently at major Erligang centers such as Zhengzhou; these works imply organized labor and durable political authority.
The Shang state’s early growth coincided with highly developed piece-mold bronze casting for ritual vessels—key media of elite display and religious authority—seen in Erligang-period Shang bronzes.
At Panlongcheng (Hubei), an Erligang-associated walled settlement with palace foundations and elite burials illustrates early Shang southward expansion and the establishment of strategically placed regional centers.
Research on Panlongcheng emphasizes its role as a major early Shang settlement in southern China and a plausible node for resource access and interregional movement of metal, supporting broader Shang political economy.
Textual tradition and archaeology together suggest the Shang court shifted among several capitals in its early and middle phases, before later establishing a long-lived center at Anyang (Yin).
At Yinxu (Yin Ruins), inscribed oracle bones—central evidence for Shang religion, rulership, and administration—date broadly to late Shang, commonly summarized as about 1400–1100 BCE in heritage descriptions.
By the 14th century BCE, Shang kings are described as having settled at Anyang, creating the best-documented Shang center and the setting for the late Shang’s mature institutions.
The Huanbei (Huayuanzhuang) walled city, built around 1350 BCE, is commonly assigned to the “Middle Shang” and shows a large planned urban center near Anyang prior to the better-known Yinxu occupation.
Huanbei appears to have been occupied for only decades and then abandoned around 1300 BCE, shortly before major construction and occupation at Yinxu across the Huan River, signaling a significant political/urban shift.
The move of the Shang capital to Yin (near modern Anyang) is widely placed around 1300 BCE (often associated with King Pan Geng in received tradition) and aligned by chronology projects with the earliest occupational layers at Yinxu.
Michael CarricoFormation and early expansion of the Shang state (c. 1600–1300 BCE)