Keep One Person

Actor Duan has a nuclear sculpture tied with a red string on his wrist, which he wears for ten years. He always thought this was a gift given to him by Chen Qingwu alone Until a class reunion one day, One boy pointed at the nuclear sculpture on his hand and said, "Are you still wearing this thing? Mine has long since disappeared." Actor Duan: "Yours?" Boy: "Yes, Chen Qingwu gave it to her when she graduated. Her grandfather is a master of nuclear carving. Before the college entrance examination, he carved one for everyone in our class." Actor Duan: "..." One day, Chen Qingwu wanted to confess the secret of nuclear carving to Best Actor Duan. Actor Duan: "I know, the whole class has them, and they were all carved by your grandfather." Chen Qingwu: "Yes, the whole class was carved by my grandfather. Only yours was carved by me."