 The horse became important to the culture, as evidenced by the remains of horses and horse paraphernalia found at Upper Xiajiadian sites.The culture also moved away from a centralized social organization, as no evidence for large public works has been discovered at Upper Xiajiadian sites.From relying on pigs to a dependence on sheep and goats for its primary source of domesticated protein, the culture built more extravagant graves for its elites than the Lower Xiajiadian, with more numerous and elaborate burial offerings.