What is the enlightenment of the smiling face wall in Pan's composition?

There is a most beautiful place in everyone's heart, maybe home, maybe mother's arms. Do you know that?/You know what? Do you know that?/You know what? The most beautiful place in my heart is a school full of vitality and knowledge. My school is a central primary school in Gulou District. I am a student in Class One, Grade Three. Walking into the school gate, you are greeted with a small video of learning and scientific knowledge. More striking is the smiling face wall on the left. Look! The rows of smiling faces are so sweet and happy, just like eating honey. Look at the little doctors with test papers and doctor hats on the right wall. Look how bright we are laughing. This is my little friend who studies with me. Seeing this, you will feel that this is a campus full of knowledge and vitality. Inaction has a magical power that attracts you forward. Walking to the center of the school, I saw the magnificent five-star red flag flying in the air. There is a small garden in front of the building, which is planted with red, yellow, purple, white and all kinds of small flowers. Clusters of trees are particularly beautiful against the green leaves. Come to the spacious gym, let you have a dream of leap. Do you know what my dream is? My dream is to perform at the opening ceremony of the Olympic Games on August 8, 2008. Our school was chosen as the "Olympic Fuwa"! I dreamed that on the first day of school, other children and I were dressed in five different colors, and our faces were filled with bright smiles. I hope I can hold the Olympic flame high like my brother Liu Xiang and stride at the front of the team. I know it's just a dream, but I believe my dream will come true. What I can do now is to study hard in this beautiful school and pave the way for my dream with my wisdom. I believe that I will grow up with our school in the future. I love our school and the teachers who teach us knowledge.