Playing with the umbilical cord: The fetus will never be quiet for a moment except when sleeping. The expectant mother does not give him any toys in the womb, and he spends his free time amusing himself. But there is one toy that I have to mention, and that is the umbilical cord. It was originally a \”channel\” that transported nutrients to the fetus, but it was so boring that the fetus regarded it as a toy and played around it around the umbilical cord. When you get tired of playing, you take a break. When you feel energetic, you play more and more vigorously. But you don’t know the danger, so you hide aside. Some babies may be in danger if their umbilical cord becomes entangled during play.