For every woman, childbirth is an important part of life. However, the process of childbirth is full of pain. In the curved and narrow birth canal, the fetus\’s head has to rotate several times and is constantly squeezed out. We can imagine that this is a very painful process for the mother. According to historians, humankind\’s ancestors understood the pain of female childbirth more than 100,000 years ago. According to the unearthed ancient humans