In a mental hospital.
During the day, he was given drugs and beaten and kicked by fellow patients. Late at night, a masked man appeared on time, possessing her mechanically, with only indifference in his eyes.
She thought she would die there.
Until the new doctor Yu Huai rescued her from hell. He was gentle and restrained, looking at her as if he were looking at a living person.
She fell in love with him.
Later she found out that he was the one wearing the mask. He saved her just to make her climb into his bed willingly, and then destroy her last dignity with his own hands.
The cause of all this was that her father destroyed his mother ten years ago.
The worst revenge is not to kill her, but to make her fall in love with him.