This Chapter details a conversation between King Wu and Jiang Taigong, exploring the use of musical tones to decipher enemy movements and predict battle outcomes. Jiang Taigong explains how different sounds—from drums to shouts—correspond to specific tones and symbolic creatures representing the five elements. This ancient military strategy uses acoustics and observation to glean tactical advantages, highlighting a sophisticated blend of natural philosophy and psychological warfare. The dialogue emphasizes the subtle signs discernible through careful listening and observation, demonstrating a unique approach to battlefield intelligence.