Religious beliefs and social organization
The inhabitants of Neolithic China were, by the 5th millennium if not earlier, remarkably assiduous in the attention they paid to the disposition and commemoration of their dead. There was a consistency of orientation and posture, with the dead of the northwest given a westerly orientation and those of the east an easterly one. The dead were segregated, frequently in what appear to be kinship groupings (e.g., at Yuanjunmiao, Shaanxi). There were graveside ritual offerings of liquids, pig skulls, and pig jaws (e.g., Banpo and Dawenkou), and the demanding practice of collective secondary burial, in which the bones of up to 70 or 80 corpses were stripped of their flesh and reburied together, was extensively practiced as early as the first half of the 5th millennium (e.g., Yuanjunmiao). Evidence of divination using scapulae (shoulder blades) dating from the end of the 4th millennium (from Fuhegoumen, Liaoning) implies the existence of ritual specialists. There was a lavish expenditure of energy by the 3rd millennium on tomb ramps and coffin chambers (e.g., Liuwan [in eastern Qinghai] and Dawenkou) and on the burial of redundant quantities of expensive grave goods (e.g., Dafanzhuang in Shandong, Fuquanshan in Shanghai, and Liuwan), presumably for use by the dead in some afterlife.
Although there is no firm archaeological evidence of a shift from matrilineal to patrilineal society, the goods buried in graves indicate during the course of the 4th and 3rd millennia an increase in general wealth, the gradual emergence of private or lineage property, an increase in social differentiation and gender distinction of work roles, and a reduction in the relative wealth of women. The occasional practice of human sacrifice or accompanying-in-death from scattered 4th- and 3rd-millennium sites (e.g., Miaodigou I, Zhanglingshan in Jiangsu, Qinweijia in Gansu, and Liuwan) suggests that ties of dependency and obligation were conceived as continuing beyond death and that women were likely to be in the dependent position. Early forms of ancestor worship, together with all that they imply for social organization and obligation among the living, were deeply rooted and extensively developed by the Late Neolithic Period. Such religious belief and practice undoubtedly served to validate and encourage the decline of the more egalitarian societies of earlier periods.