Torture is to use pain to punish or force someone to do something.
Yes this is happening all over the world in places like Egypt and the US, but it seems like China has the most incidents of torture. Most of the people who are getting tortured are Chinese prisoners by Chinese officers. They are getting beaten, kicked, electrically shocked, hanged by the arms, shackled, exposed to cold or hot weather, and forced to work. In China, torture is prohibited, but officers still do it to prisoners because of poor training. Other people who get tortured are migrant workers, religious and ethnic minorities, labor activists, and political dissidents.