Su Wen accompanied her sixth sister and little sister as they worked on homework in the living room. Despite the lively atmosphere created by the two little girls, they both demonstrated remarkable intelligence, especially Su Wen's sixth sister. However, Su Wen couldn't help but feel frustrated with her little sister's performance in mathematics, an area where she consistently struggled despite excelling in other subjects.
When faced with a simple math problem for example 16+2-7, Su Wen anticipated that her little sister would easily solve it. However, her optimism quickly faded as she observed her sister attempting to count on her fingers and even consider using her toes, realizing that it was inappropriate for a primary school setting. The scene unfolded like a struggle against ADHD.