The Master Key System (with CD) - Chinese Edition | Self-Improvement & Success Guide | Perfect for Personal Growth, Meditation, and Manifestation Techniques

This book was listed among banned books in 1933. It was forbidden to prevail until 2003. Only privileged few can read it once. At that time, they needed to pay $1,500 for a handwritten copy, and $1,500 was equal to a person's two years' salary. Can you imagine that?