People with sickle cell anemia may experience pain crises several or even dozens of times a year. The pain can last from hours to days and may require the patient to stay in the hospital.
Li Shu's condition is exactly the same as Doctor Xie's late daughter, who also suffers from sickle cell anemia inherited from her deceased mother and Doctor Xie.
She was abused to death by his grandparents while Doctor Xie was away. When he returned, what awaited him was his daughter's cold body.
No one knows why she was beaten by the Xie family. But there were widespread rumors that she had given birth to an illegitimate child. As for the child and the child's father, no one, including Doctor Xie, knew about their whereabouts.
Thinking of this, a bold guess appeared in Song Yan's mind that Li Shu might be Doctor Xie's long-lost granddaughter. Unfortunately, because of her injuries, he couldn't see her face clearly.