Tai Chi PENG Root Power Rising explains the mysterious tensile/elastic power of traditional Chinese Tai Chi known as PENG energy. The concept is clarified with direct reference to original translations of classical Chinese source texts. The human energy architecture that enables PENG development is detailed. Seven Tai Chi poses/structures from the Zheng Manqing Tai Chi sequence are introduced as a new framework, beginning with traditional 'standing post' energy exercises. Standing Post work (zhan zhuang) is enhanced with unique Tai Chi characteristics, leading to the evolution of a new relaxation and energy cultivation protocol: 'expanding post' (zhang zhuang). Fully illustrated, with extensive commentary on all aspects PENG definition, cultivation, and deployment, including a highly effective basic Tai Chi straight sword drill for linkage between core power centers and the hands.