The penal system in China is composed of an administrative detention system and a judicial incarceration system. As of 2020, it is estimated that 1.7 million people had been incarcerated in China, which is the second-highest prison population after the United States. China also retains the use of the death penalty with the approval of the Supreme People's Court, and there is a system of death penalty with reprieve in which the sentence is suspended unless the convict commits another major crime within two years while they are detained.