 North Chinese people were active there from the Bronze Age.In the lower Yangtze, two Yue tribes, the "Gouwu" in southern Jiangsu and the "Yuyue" in northern Zhejiang, display increasing Zhou (i.e., North Chinese) influence from the 9th century BC.Traditional accounts credit these changes to northern refugees (Taibo and Zhongyong in Wu and Wuyi in Yue) who assumed power over the local tribes, though these are generally assumed to be myths invented to legitimate them to other Zhou rulers.