Fully understanding "who I am" is a lifelong topic. At 3 years old, during their journey of exploring their five senses, fingerprints, limbs, and body systems, the children have repeatedly confirmed that "my body is very useful" and "I am capable". They also actively choose their favorite occupational role-plays, adopt healthy lifestyles through games, and constantly gain a sense of autonomy, competence, and develop self-confidence.