"Mom, I forgot to wear my school badge again today." My son Chenyu pulled his wrinkled uniform out of his backpack and looked at me nervously. I crouched down and straightened his collar. "What did your teacher say?" Chenyu lowered his head. After a long pause, he finally managed to say, "Teacher Wang said... to buy fifty school badges and bring them to school, or I'll have to stand for a week." Fifty of them. I nodded. "All right." Chenyu's eyes widened. "Mom, that's fifty!" "I heard you." That night, I made a phone call. The next morning, Chenyu went to school as usual. I arrived ten minutes before him.
