A vertical navel can visually lengthen a person's waist, so that the whole person is lengthened and the legs are longer and more coordinated.

The navel, commonly known as umbilical eye, is called Shenque point in medicine, which is essentially a scar left after the umbilical cord falls off after the fetus is born. The navel is located on the midline of the abdomen at the level of the anterior superior iliac spine, and its diameter is about 1.0 ~ 2.0 cm. Usually it can be a small depression or a small protrusion. The abdominal muscles below the navel form a depression. The navel is a weak part, so it should be protected daily, and it should not catch cold or be scratched by hands.