A number of recent publications have given detailed accounts of the gulag system in the Peoples Republic of China (PRC), filling an important gap in the available literature. Comprehensive descriptions of the huge prison and labour camp network, which has administered the lives of 20 to 30 million convicts since 1949, are generally based either on the analysis of official documents, in particular notices and regulations,1 or on information gathered from former prisoners.2 The brutal treatment of political prisoners in the regimes penal institutions, the gradual destruc– tion of human beings in labour camps, and the widespread use of torture and physical violence in thought reform are some of the most disturbing aspects of a gulag system that have been vividly evoked in many autobiographies.3 Beyond these general descriptions, however, virtually f nothing is known about the number of camps, the scope of labour reform or even the daily lives of common prisoners. The major difficulty encountered in research on the gulag system is the lack of more substantial empirical evidence, as internal documents formulated by prison administrations, public security bureaus or other security departments are f difficult to find. Indeed, anyone found guilty of leaking special classified documents will be convicted of a counter–revolutionary crime.