According to the relevant provisions of the Criminal Law of People's Republic of China (PRC), if you want to investigate the legal responsibility of drunk driving, you need to have sufficient evidence. If the evidence of drunk driving is insufficient, the legal rule of no doubt and no guilt shall apply, and the legal responsibility of the actor cannot be investigated.
Legal objectivity:
Article 160 of the Criminal Procedure Law stipulates that when investigating a closed case, the public security organ shall ensure that the facts of the crime are clear, the evidence is true and sufficient, write a prosecution opinion, and transfer it to the people's procuratorate at the same level for examination and decision together with the case file and evidence; At the same time, inform the criminal suspect and his defense lawyer about the transfer of the case.