The Sweet, Mute Substitute Wife

Abandoned by her biological mother as a child, she was later imprisoned after finding her family, and poisoned until she lost her voice. After escaping death, she was rescued by Shi Yanyu.

Li Shengsheng thought she had found the right man, but to Shi Yanyu, she was nothing more than a replacement for someone else.

But even a replacement has her dignity. When it's time for her to leave, she won't linger. She just can't understand why Shi Yanyu is chasing after her now that everything is over and she's already walked away. Hadn't they agreed that they were only using each other and putting on an act?