By the “Great Wall of Confinement,” the authors refer to the prison camp system established by the Chinese Communist Party after 1949. The two crucial components of this system are the laogai system (laodong gaizao, translated in the book to “remolding through labour” rather than the more often used “reform through labour”), and the laojiao system (laodong jiaoyang) or “reeducation through labour.” Let me say at once that this book is much more than an analysis of the literature surrounding the phenomenon of the prison camps. Through memoirs from former inmates and reportage literature we learn many detailed facts about the Chinese camp system, details equally valuable to the legal and the social science scholar.

The book describes in detail the daily life of the camps, the prison conditions and the system's methods of arrest, detention, solitary confinement, torture for confessions, famine, degradation of prisoners, and a range of practices showing the security forces' discretionary powers and the “flexibilities” of informal sentencing. The authors emphasize both the modern ideology of remoulding and the traditional legalist (fajia) roots of a “very malleable sort of law.” Williams and Wu commendably combine a range of valuable empirical detail with a more general theoretical analysis of the historical, cultural and systemic roots and practices of the camp system.

The only exceptions to generally harsh conditions in the PRC camps were the special prisons for high-ranking persons like the famous Fushun prison in Liaoning province which contained the last Manchu emperor, Puyi, high-ranking prisoners of war such as former Kuomintang top military officers, and Japanese prisoners of war.