In this episode, Damo is discussing one of the most basic ways in which the five elements (Wu Xing) are used to inform alchemical practice. The model of the five elements is a deep and multi-layered theory that is applied in many ways; here, the focus is on just one of the most basics ways. Laying the foundations within the five elements is w way to ensure that the Qi of the body is regulated and healthy before going into deeper and more powerful alchemical processes.