This book introduces the China Cybersecurity Classified Protection System (CCPS), covering its development, interpretation of the Cybersecurity Law of the People’s Republic of China, the underlying standards, and procedures in practice such as cybersecurity system classification level determination, registration, development and improvement, evaluation, supervision and inspection.In this book, we analyze the implementation and practice of cybersecurity protection in China, and provide an interpretation of the existing cybersecurity related laws, regulations and standards. The purpose of this book is to serve the training and implementation needs of foreign organizations, including companies along the Belt and Road Initiatives, in establishing their cybersecurity protection in line with the requirements of China Cybersecurity Classified Protection System.