Legal analysis: Criminal cases generally go through three stages, namely, investigation stage, examination and prosecution stage and trial stage. In the investigation stage, if a criminal suspect is detained in criminal detention, the maximum period is 37 days. If the arrest is approved, the period of investigation and detention shall be extended for two months. The general period of the review and prosecution stage is 1 month. Major and complicated cases can be extended for half a month. At the trial stage of the court, the people's court shall pronounce a judgment within two months after accepting the case of public prosecution, and no later than three months. With the approval of the people's court at the next higher level, cases that may be sentenced to death or cases with incidental civil actions may be extended for three months; Due to special circumstances need to be extended, it shall be submitted to the Supreme People's Court for approval. To sum up, if there is no extension, the general criminal case should be closed within 6 months.

Legal basis: Criminal Procedure Law of People's Republic of China (PRC).

Article 156 The period of investigation and detention of a criminal suspect after his arrest shall not exceed two months. If the case is complicated and cannot be concluded at the expiration of the time limit, it may be extended for one month with the approval of the people's procuratorate at the next higher level.

Article 172 The People's Procuratorate shall make a decision on a case transferred for prosecution by a supervisory organ or a public security organ within one month. For major and complicated cases, it may be extended for fifteen days. If a criminal suspect pleads guilty and admits punishment and meets the applicable conditions of summary procedure, he shall make a decision within ten days, and may be sentenced to fixed-term imprisonment of more than one year, which may be extended to fifteen days. If the people's procuratorate examines and prosecutes a case and changes its jurisdiction, the time limit for examination and prosecution shall be counted from the date when the changed people's procuratorate receives the case.

208th Article When trying a case of public prosecution, the people's court shall pronounce a judgment within two months after accepting it, and no later than three months. For a case that may be sentenced to death or an incidental civil lawsuit, if one of the circumstances stipulated in Article 158 of this Law occurs, it may be extended for three months with the approval of the people's court at the next higher level; Due to special circumstances need to be extended, it shall be submitted to the Supreme People's Court for approval. If the people's court changes its jurisdiction, it shall be counted from the date when the changed people's court receives the case. The people's court shall recalculate the time limit for hearing a case transferred to the people's court after the supplementary investigation by the people's procuratorate is completed.