Book excerpt: This westerner's guide to Chinese astrology (Ba Zi) explains the basis on which charts are drawn up, how they work, and how they provide the tools to understand ourselves and our relationships with others. Ba Zi is the art of understanding the energies present in a person's life from birth to death and how these energies impact on their behaviour and interactions. As well as providing an explanation of how to draw up and interpret a basic chart, the book provides detailed information on the different character types and their strengths and weaknesses, including useful tips on likely health weaknesses and what can be done to address them. Foundational information on yin and yang and the five elements is also included, essential to understanding the principles of Ba Zi. Accessible for beginners and providing rich explanations for anyone more experienced, this book will be an intriguing and helpful read for anyone interested in the art of astrology.