Speaker: Tao Shi, PhD Candidate, Cotsen Institute of Archaeology, UCLAThe rise of Erlitou not only declares the end of the Longshan Age, but also open a new era of the Luoyang-centric social network. However, how the political landscape was formed and what  the knowledge root of Erlitou was have not been discussed. In this paper, I will discuss the Longshan Network as the process of knowledge preparation for the rise of Erlitou. Moreover, I will introduce my survey in the Qinling Mountain Range, and see the Dan River in the Qinling Mountain Range as an expressway of knowledge transmission for the Erlitou state.