A criminal sentenced to public surveillance, criminal detention, fixed-term imprisonment or life imprisonment in Article 78 of the Criminal Law of People's Republic of China (PRC) may have his sentence reduced if he consciously abides by prison regulations and accepts education and reform during the execution period, and if he truly shows repentance or meritorious service; (1) preventing others from engaging in major criminal activities; (2) reporting major criminal activities inside and outside the prison, which is verified by investigation; (three) there are inventions or major technological innovations; (4) sacrificing oneself to save others in daily production and life; (five) outstanding performance in resisting natural disasters or eliminating major accidents; (6) Having made other significant contributions to the country and society. The actual term of imprisonment after commutation shall not be less than the following period: (1) If the sentence is sentenced to public surveillance, criminal detention or fixed-term imprisonment, it shall not be less than half of the original sentence; (two) sentenced to life imprisonment, not less than thirteen years; (3) If a criminal whose execution is suspended is restricted by the people's court in accordance with the provisions of the second paragraph of Article 5 of this Law, his sentence shall be commuted to life imprisonment and to fixed-term imprisonment of 25 years, but less than 2 years.