Sheng Xiaoni (pseudonym) has been addicted to drugs for years. Traces of needles can be seen all over her body, with her reddish and swollen hands being typical of drug users. Sheng provides sexual services in exchange for drugs, which she injects three times a day, amounting to 200 yuan (US$ 33) per day on average. She said all her earnings go to drugs. She was diagnosed with AIDS in 2007. [Photo/Sina]