Legal analysis: Injury identification can be done in hospital or examined by forensic doctors. The so-called injury identification, through forensic investigation or hospital evidence, the brain was physically hit, and the symptoms of the injury were life-threatening, so it should be treated according to the standard of serious injury. It can also determine the victim's degree of injury and criminal circumstances, that is, to determine the damage of his body structure, brain dysfunction, psychological and spiritual influence and the degree of recovery from the injury.

Legal basis: Article 234 of the Criminal Law of People's Republic of China (PRC) intentionally hurts another person's body, and he 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.