First of all, according to Article 20 of the Criminal Law, in order to protect the national interests, public interests, personal, property and other rights of oneself or others from ongoing unlawful infringement, stopping unlawful infringement and causing damage to the unlawful infringer, it belongs to self-defense and does not bear criminal responsibility. My client, who was unlawfully harmed by Yu's intentional injury, is an act of self-defense and should not bear criminal responsibility.
Secondly, my client has neither intention nor negligence in the subjective aspect of crime. My client played a legal role in blocking Yu's violent attack, which did not belong to intentional injury, and my client should not have foreseen the consequences of Yu's death in such an urgent situation, so he did not have the subjective aspect of intentional or negligent crime. Does not constitute a crime.