How many years can a murderer get?

The problem is unclear. The killing was intentional, not negligent. Please refer to the following legal provisions:

Article 232 of the Criminal Law: Whoever intentionally kills shall be sentenced to death, life imprisonment or fixed-term imprisonment of more than 10 years; If the circumstances are relatively minor, they shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years.

Article 233 Whoever negligently causes death shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years; If the circumstances are relatively minor, they shall be sentenced to fixed-term imprisonment of not more than three years. Where there are other provisions in this Law, such provisions shall prevail.