Wisdom of the Ghost Valley: Gui Gu Zi

Gui Gu Zi, or Wisdom of the Ghost Valley in modern English, is a compilation of Daoism philosophy and Persuasion Techniques, which were written about 2,400 years ago. Though the exact author is still a topic of debate among scholars, several trustworthy evidences points to the fact that a hidden sage, whose name was Wang Xu, lived in the ghost valley (modern He Nan in China) and composed this book that incorporated Daoism, School of Naturalists, and School of Diplomacy. Perhaps due to his b...