Zhang Caisheng was the attending ophthalmologist at Senjia Hospital. He had a unique approach to treating eye diseases and had even invented a patented treatment, earning widespread attention and recognition from the medical community. But the current director, Tang Binghui, grew anxious as he watched, convinced that Zhang Caisheng would eventually take his position. He hired gangsters to brutally attack Zhang Caisheng, causing his death. Afterward, Tang Binghui sent people everywhere to hunt down Lin Weixiu and force her to hand over the patent, planning to transfer it abroad to his son. He also took Lin Weixiu's son, Zhang Huixin, hostage. After enduring a series of hardships, Lin Weixiu, with Ding Jiali's help, successfully delivered the patent to Zhao Fankuan, the mentor to whom Zhang Caisheng had entrusted it before his death.
