The child was injured when you were in charge of training. Of course you are responsible, but it is not appropriate to say how to pursue it, because it was an accident after all. The unexpected thing can only be to carefully analyze the reasons and take active measures to prevent similar things from happening in the future. After the incident, you can actively take measures for examination and treatment. It is estimated that parents will not make unreasonable demands after knowing the situation, but you still have to cooperate with relevant personnel to find out the reasons and learn lessons. When something goes wrong, face it seriously. Don't be afraid. It won't be as difficult as you think.