On the First Day of School, My Sister and I Swapped Ages

"Hurry up, girls! You can't be late on your first day of school," their mother, Zhou Wanqing, called to her two daughters upstairs, who were still dawdling. "You just finished the transfer paperwork, and you need to go to the academic affairs office first thing this morning. The notice says you have to be there twenty minutes before the bell rings!" "Mom... All right, all right, stop nagging... I'm already ready," her older sister, Xu Yuening, replied lazily. Xu Yuening rubbed her slightly messy, wavy hair as she slowly came downstairs, a few strands falling casually over her shoulders. Her pretty face wore the languid look of someone who hadn't quite woken up. Because she was wearing