The National Supervisory Commission & the anti-corruption state
The National Supervisory Commission: its 2018 constitutional creation, liuzhi detention, the Supervision Law and the unified anti-corruption state under Party leadership.
A new branch of the state
The National Supervisory Commission (NSC, 国家监察委员会) is the youngest organ in China's constitutional architecture, created by the 13th National People's Congress at its first session on 11 March 2018, which amended the 1982 Constitution to insert a new Section VII, 'Supervisory Commissions' (Articles 123–127) into Chapter Three on the structure of the state. The NSC was formally constituted on 23 March 2018, with Yang Xiaodu as its first director. On the same day the NPC passed the Supervision Law of the PRC (中华人民共和国监察法), the organic statute governing the system.
Article 123 declares that supervisory commissions at all levels are 'the supervisory organs of the State.' Article 124 makes the NSC the highest supervisory organ, structured in a four-tier hierarchy mirroring the people's congresses: national, provincial, prefectural (city) and county. Crucially, Article 126 makes the NSC responsible to the NPC and its Standing Committee — paralleling, but standing apart from, the State Council, the Supreme People's Court and the Supreme People's Procuratorate.
Why a fourth power was needed
Before 2018 China's anti-corruption effort was fragmented and overlapping. The Party's Central Commission for Discipline Inspection (CCDI, 中央纪律检查委员会) could only discipline the roughly 90 million Communist Party members; it had no authority over non-Party public employees. State functions were split among the Ministry of Supervision under the State Council, the National Bureau of Corruption Prevention, and the anti-graft and dereliction-of-duty bureaus inside the procuratorate. The 2018 reform merged these state organs into the new supervisory commissions and folded the procuratorate's corruption-investigation powers into them.
The stated rationale, set out in Xi Jinping's explanation to the 2018 NPC and in the 19th Party Congress (October 2017) decisions, was to achieve 'full coverage' (全覆盖) of everyone exercising public power. The NSC's jurisdiction therefore reaches all 'public officials' (公职人员) as defined in Article 15 of the Supervision Law: Party and state functionaries, managers of state-owned enterprises, staff of public institutions (schools, hospitals), grassroots self-governing organisation personnel, and any other person performing public duties — not merely Party members. This closed the pre-2018 gap whereby a corrupt non-Party hospital director or university administrator fell outside both CCDI discipline and effective state supervision.
The Party–state fusion
The defining feature of the system is 'one institution, two nameplates' (一套人马，两块牌子): the NSC and the CCDI share offices, staff and leadership, working as a single integrated body while wearing two signs. The CCDI's secretary concurrently directs supervision work, and the Party's leadership over the supervisory organs is explicit. The reform is therefore not a Western-style separation of powers but a consolidation that places anti-corruption enforcement firmly under unified Party command while giving it constitutional, state-law standing to act against the entire public sector.