Sixteen-year-old boy cuts people with a knife, but what if he writes a letter of understanding?

Those who have reached the age of 14 and are under the age of 16 shall be given administrative detention punishment according to law, and the administrative detention punishment shall not be implemented and a fine shall be imposed.

Those who have reached the age of 16 but are under the age of 18, and violate public security management for the first time, shall be given administrative detention punishment according to law, and shall not be given administrative detention or fined.

Those who have reached the age of 14 but under the age of 16 shall not be investigated for criminal responsibility for intentional injury, and those who cause serious injuries shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years, and minors who commit crimes shall be given a lighter or mitigated punishment.

Those who have reached the age of 16 and intentionally hurt others and cause minor injuries shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance. Those who commit crimes against minors shall be given a lighter or mitigated punishment.

Whoever gains the understanding of the victim in a criminal case may be given a lighter punishment.

Relevant regulations:

Article 43 of the Law on Public Security Administration Punishment, whoever beats others or intentionally hurts others' bodies shall be detained for more than five days and less than ten days, and shall be fined between two hundred yuan and five hundred yuan; If the circumstances are minor, they shall be detained for not more than five days or fined not more than five hundred yuan.

Under any of the following circumstances, the offender shall be detained for more than 10 and less than 15, and fined for more than 500 yuan 1000 yuan:

(a) gang beating, hurting others;

(2) Beating or injuring a disabled person, a pregnant woman, a person under the age of 14 or a person over the age of 60;

(3) Beating or injuring others for many times or beating or injuring more than one person at a time.

Article 21 If an actor who violates the administration of public security is under any of the following circumstances and should be punished by administrative detention according to this Law, he shall not be punished by administrative detention:

(1) Having reached the age of 14, but under the age of 16;

(2) Having reached the age of 16 but under the age of 18, and violating the administration of public security for the first time;

(3) Over 70 years old;

(four) pregnant or nursing their own baby under 65438 0 years of age.

Article 234 of the Criminal Law shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance.

Whoever commits the crime mentioned in the preceding paragraph and causes serious injuries shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years; Whoever causes death or serious disability by particularly cruel means shall be sentenced to fixed-term imprisonment of not less than 10 years, life imprisonment or death. Where there are other provisions in this Law, such provisions shall prevail.

Article 17 A person who has reached the age of 16 and is criminally responsible shall be criminally responsible if he commits a crime.

A person who has reached the age of 14 and is under the age of 16 commits the crimes of intentional homicide, intentional injury, causing serious injury, death, rape, robbery, drug trafficking, arson, explosion and poisoning, and shall bear criminal responsibility.

If a person who has reached the age of 14 and is under the age of 18 commits a crime, he shall be given a lighter or mitigated punishment.

If he is not given criminal punishment because he is under the age of sixteen, his parents or guardians shall be ordered to take care of him. If necessary, education can also be conducted by government-government.