The senior who looks pure and cold but is a middle school student at heart and the junior who always has a business-like smile on his face. One is a has-been senior who has lived at home for more than sixty years, but in his inner world he is always 17 or 18; the other is a young and mature but not old, his brain works very fast, and he knows how to stick to others, cling to others, and hug his senior's lap tightly.
Concept: Similarities and differences in thoughts across generations and attributes