Mischievous Kiss (2005)

Academically challenged high-schooler, Yuan Xiang Qin (Ariel Lin) musters up the courage to confess her love to Jiang Zhi Shu (Joe Cheng), a genius with an IQ of 200, only to be rejected by him in front of the entire school. After an earthquake leaves them homeless, Xiang Qin and her father are taken in by an old college friend, Uncle Li, who just so happens to be Zhi Shu's father. Zhi Shu remains cold, thinking Xiang Qin is one of the dumbest people he has ever encountered. Xiang Qin, on the other hand, is determined to improve herself and slowly win him over.