I've Traveled Through Time, and the Prince Can Hear My Heart.

Wang Xiaoyu was a medical university student in her previous life. She died unexpectedly and became a palace maid. She met Chu Mingxuan, a frail prince who was struggling in the palace and was about to die soon. The male protagonist hears the female protagonist's voice and gradually changes the situation. The two work together to break through all obstacles and live a happy life.