How long does it take to institute criminal proceedings?

Legal subjectivity:

The indictment shall be filed with the people's court within two years after the defendant's penalty is executed at the latest. However, under any of the following circumstances, the people's court shall accept the complainant's complaint about a criminal case that has been more than two years. (1) The defendant in the original trial may be acquitted; (2) the defendant in the original trial filed a complaint with the people's court within the prescribed time limit, and the people's court refused to accept it. (3) Difficult, complicated and major cases.

Legal objectivity:

Article 253 of the Criminal Procedure Law If the appeal of the parties, their legal representatives or close relatives meets one of the following circumstances, the people's court shall retry the case: (1) There is new evidence to prove that the facts ascertained in the original judgment or ruling are indeed wrong, which may affect the conviction and sentencing; (2) The evidence on which conviction and sentencing are based is inaccurate and insufficient, which should be excluded according to law, or there are contradictions between the main evidences proving the facts of the case; (3) The application of the law in the original judgment or ruling is indeed wrong; (four) in violation of legal procedures, which may affect the fair trial; (5) The judicial officers commit acts of corruption, bribery, favoritism and malpractice, and perverting the law.