It is illegal for an elder brother to beat his younger brother. Brother beating younger brother is suspected of intentional injury. Whoever intentionally harms another person's body shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance. Whoever 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. Whoever commits the crime of intentional homicide, intentional injury, causing serious injury or death, rape, robbery, drug trafficking, arson, explosion or throwing dangerous substances shall bear criminal responsibility. Those under the age of sixteen who are not subject to criminal punishment shall be ordered to be disciplined by their parents or other guardians. When necessary, carry out special corrective education according to law.

Criminal law of the people's Republic of China

Article 234

Whoever intentionally harms another person's body 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.