We will review the foundations of Stems and Branches, then explore in more depth the world of Six, the twelve Earthly Branches (dizhi 地支). We will examine the movement from space to time, or from earlier Heaven (xiantian 先天) to later Heaven (houtian 後天) and discuss the role of the ‘organs with name but no form’. We will explore time and its relationship to the Six channels liujing 六經in the regular cyclical flow of qi around the body. This will give us a deeper understanding of the universal cycles of time and how these are mirrored in the channels in the body. We will touch on how to combine acupoints based on the human body/microcosm within the cosmos/macrocosm.