Seriously, sir? You can even pursue a professor?

On the day the course selection system opened, Professor Ruan's "Introduction to Discrete Mathematics" filled up instantly. The campus forum exploded: ["That speed, is it a math class or a Jay Chou concert?"] ["I heard Professor Ruan's classes are difficult, and she's even colder, but she's so beautiful!"] Meanwhile, in the boys' dormitory, Tang Zheng glanced at his roommate's regretful face for not being able to get a spot in Professor Ruan's class, opened his chat software and sent a message: ["Aunt Ruan, I didn't choose your class."] Three seconds later, a reply popped up: ["Hmm, I saved a spot for you."] Attached was a screenshot—his name was lazily lying at the top of the list in the teacher's backend. Tang Zheng was silent for a moment: ["Thank you, Aunt Ruan."] Ruan Hongzhuang: ["Study hard and make progress every day."] What others didn't know was that this youngest associate professor at Jinghan University, famous for her talent and beauty, was the youngest daughter of his grandfather's best friend, and also his most "respected" Aunt Ruan. He remembered when he was five years old, Aunt Ruan was eleven. One day, she secretly gave him a fruit and told him it was a magic fruit. She said that if he ate it, he would become as powerful as the Monkey King... That was the first time he ate a lemon, and it was as sour as vinegar.