This book explores unsolved mysteries from ancient and modern history, along with obscure bits of knowledge, covering fascinating historical facts from many fields. From the millennia-long survival of the Guzhu Kingdom and debates over Xiang Yu's titles and death, to the origins of the ancient Hongmen Society's secret OK hand sign, it covers everything from accounts of UFO sightings in ancient texts and Confucian debates over ritual propriety and revenge to the evolution of common sayings and ancient military wisdom. By uncovering the truth behind historical events, idioms, allusions, and folk beliefs, it brings overlooked historical details to light. Combining factual grounding with an engaging style, it takes readers beyond conventional understanding to explore the hidden history outside the official record and experience the depth and wonder of human civilization.
