Do birthdays and hair hurt people?

So you will understand. A person's injury is a concept, and its manifestation must be his physical changes, such as injury or death. According to Newton's theorem, an object will be in a state of static or uniform linear motion without external force, and every force must have an applied object. Back to your question, when a person is killed, there must be an external force acting on him. Birthday is not material, so it can't act as a force object, so it can't harm people. Hair is a concrete substance, but it can't actively exert force on another object and can only be used as a tool. A small amount of hair generally won't hurt people, so don't worry about being hurt by hair. What the fortune teller said can only be regarded as entertainment, and cannot be taken seriously. No head drop, no witchcraft, no curse, only inferior threats.