Shuanggui
Investigations and prosecutions of cadre who are suspect of corruption are conducted confidentially in a system which is separate from ordinary Chinese law enforcement and courts which are subject to influence by local cadre. According to The New York Times the system is called "shuanggui" and is greatly feared by corrupt party functionaries. According to The New York Times suspects are subjected to severe physical and psychological pressure. The system has resulted in successful investigation and prosecution of a number of corrupt cadre including some very powerful party officials. There is little sympathy by the Chinese public for corrupt officials who get caught up in the system, but also skepticism regarding its effectiveness.
Read more about this topic: Central Commission For Discipline Inspection Of The Communist Party Of China