Mo Fei wagged his head, “Why hasn’t our teacher arrived?”  “Our teacher of this class has a strong background. He like being late.” gossiped Yan Chen.  “I should’ve come later.” muttered Mo Fei. Yan Chen shook his head, saying with a serious tone, “No!”  “Why?” asked Mo Fei, confused. Yan Chen then smiled, “Do you know what nickname they give ...