One and a half years' imprisonment usually refers to one and a half years' imprisonment. Criminals sentenced to fixed-term imprisonment should be sent to prison for execution. Before being handed over for execution, if the remaining sentence is less than three months, the detention center will execute it on its behalf.

Crimes are divided into ten categories: crimes against national security, crimes against public security, crimes against the order of socialist market economy, crimes against citizens' personal rights and democratic rights, crimes against property, crimes against social management order, crimes against national defense interests, crimes of corruption and bribery, crimes of dereliction of duty, and crimes of military personnel violating their duties.