The crime of intentional injury shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance. Those who cause 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.
The specific sentence for several years depends on the injury of the other party and the specific case before making a judgment. You can entrust a lawyer to defend him and try to get a lighter sentence.