 The prisons had an occupancy rate of 81.6 per cent, while training, detention, rehabilitation, and drug addiction treatment centres had an occupancy rate of 30.8 per cent.there were about 100,000 books in the prison libraries; the percentages by language were 83% Chinese, 10% English, and 7% not in Chinese nor English.Prison authorities stated that they did not wish to buy very many books in neither official language to ensure the security of the prisons; Legco member Shiu Ka-chun criticised this rationale.