 They occupied the shore of the Bay of Bohai around present-day Binzhou and Boxing, an area which the silt deposition from the present course of the Yellow River has since made miles inland.In alliance with the Shang prince Wu Geng, Pugu joined the "Dongyi" of Yan (, near present-day Qufu) and Xu in the Huai valley in opposing Shang's replacement by the Zhou after the Battle of Muye.This insurrection joined with the Rebellion of the Three Guards within Zhou itself, opposing the regency of the Duke of Zhou  .