List of countries by incarceration rate
China. The rate of 118 is for sentenced prisoners in 2015 in Ministry of Justice prisons only. World Prison Brief: "1,649,804 [prisoners] at mid-2015 (via Asian and Pacific Conference of Correctional Administrators - sentenced prisoners in Ministry of Justice prisons only, excluding pre-trial detainees and those held in administrative detention). The Deputy Procurator-General of the Supreme People's Procuratorate reported in 2009 that, in addition to the sentenced prisoners, more than 650,000 were held in detention centres In China. If this was still correct in mid-2015 the total prison population in China was at least 2,300,000. ... 118 [rate] based on an estimated national population of 1.4 billion at mid-2015 (from United Nations figures) – sentenced prisoners in Ministry of Justice prisons only. (A total prison population of 2,300,000 would raise the prison population rate to 164 per 100,000.)" See also: Re-education through labor and Laogai.
Anti-corruption campaign under Xi Jinping
Investigations by the party's disciplinary bodies are not part of the state judicial system. When an official is detained for an investigation, known as "Shuanggui", they are essentially placed under house arrest and are isolated from the outside world. The subject often must endure days of grueling interrogation. Data from the first half of 2014 showed that the conviction rate of those who were investigated in that time period to be around 99%. The CCDI and its local counterparts usually gather evidence covertly well in advance of detaining the subject. Generally, when an official is announced to be under investigation, the CCDI has already collected an overwhelming amount of hard evidence. China scholar Willy Lam also wrote that the CCDI has seen a massive expansion of its powers since Xi's ascension, and that it was increasingly involved in the governance of the state. Lam also contended that the CCDI seemed to be deriving most of its power from Xi Jinping personally.