Originally published in 1933, this book presents a comprehensive biography of Emperor Taizong of the Tang Dynasty, also known by the personal name of Li Shimin. Detailed information is provided on the life and achievements of Emperor Taizong, placing them in the context of socio-political developments during the late sixth and early seventh centuries. Illustrative figures, maps and a genealogical table are also included, together with detailed textual notes and appendices. This book will be of value to anyone with an interest in Emperor Taizong and the history of China.