Not orthopedics! It's a story about her brother and her brother's boyfriend written from the sister's perspective!
It was adapted from the personal experience of a classmate of mine. When I listened to it, I felt that even though she was miserable, I still wanted to laugh hahaha.
Although the point of view is unclear because it is written from the sister's perspective, Tong Qing and Yang Li are attacking each other.
Concept: What is a happy planet?