Is it useful for the defendant to issue another letter of understanding in criminal cases that have been sentenced? Is it useful for the defendant to issue another letter of understanding for the criminal case that has been sentenced? 1. For the criminal case that has been sentenced, the victim's letter of understanding is effective as long as it is not the final judgment. 2. If a letter of understanding is issued after the final judgment, the trial result cannot be changed. Article 23 of Several Opinions of the Supreme People's Court on the Implementation of the Criminal Policy of Tempering Justice with Leniency, if the defendant actively compensates the victim after the case, and pleads guilty and repents, it can be considered as a discretionary sentencing circumstance according to law. For crimes caused by intensification of civil disputes such as marriage and family, if the victim and his family express understanding to the defendant, they shall be considered as discretionary circumstances for sentencing. If the circumstances of the crime are minor and the victim's understanding is obtained, the offender may be given a lenient punishment according to law, and if no criminal punishment is necessary, the offender may be exempted from criminal punishment. Do you understand this explanation?