The Paul Detention Center, the largest prison in Latin America, is known as "Carandiru". A doctor came here with great ambition to start a medical program for AIDS prevention. However, the reality he faced was much trickier than he could have imagined: in this prison with more than 7,000 inmates, crowded cells, backward equipment, and harsh environment provided the breeding ground for various diseases. In a hotbed, prisoners simply cannot get adequate medical protection and help. As a newcomer, he faced a huge test. After working for a few months, he gradually realized that in this dire situation, there is still no shortage of opportunities for change. Prisoners of all shapes and sizes are not evil villains. In his little contact with them, he found their unity and organization, and most importantly, a strong will to survive. In the process, doctors themselves are also learning to adapt to the harsh working conditions and unique ways of working here. Accustomed to using first-class advanced equipment, he had to pick up the most basic equipment, and even in many cases he could only rely on his feeling and experience to make judgments. He also gradually mastered the skills of communicating with prisoners during auscultation. The doctor's efforts finally came to fruition, and he won the respect of the prisoners. With respect comes secrets, and problems other than diseases creep into his life. Many inmates confided to him their stories and the problems they encountered in prison during the treatment process. His meetings with the patients opened a window to the sinful world. In 1992, there was a big riot in the prison, and 112 prisoners were killed in the riot
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