Qin Shi Huang realized that he had not long to live, that the country that he had risked his life to conquer could not be under his control forever, and that the super weapons and pills he ordered invented in secret would fall into the hands of others after he died. In order to monopolize these technologies, he silenced everyone who were involved in the research by death, and at the same time compiled the production steps as well as their blueprints into a book, naming it “Secrets of ...