What is the purpose of the navel?

Author: None
Publisher:
Publish Date: 2004-01-01
Features: Every baby is a colorful little question mark. After the age of one, a baby's curiosity develops rapidly, and their little minds are often filled with countless "whys." Never ignore a baby's naive questions, as the early childhood period is the fastest time for brain development in a person's life. A child's knowledge is accumulated through continuous questioning and obtaining answers. Please cherish a baby's curiosity, as curiosity is a great driving force for humans to explore and understand nature. Today's little question mark may be tomorrow's scientist.