Prisoners may go to Ankang Hospital for many reasons. One possibility is that the prisoner is unwell or sick and needs medical treatment. Another possibility is that prisoners have psychological problems during their sentences and need psychological counseling or treatment. Another possibility is that there is a conflict or fight between prisoners in prison, which leads to injuries and requires medical treatment. In any case, the treatment of prisoners in Ankang Hospital is not only a concern and care for prisoners' physical and mental health, but also helps to maintain public order in prisons.