Qin Moyin penetrates into the book and becomes a thorn in the flesh of the male protagonist Yu Zhicheng.
...
Qin Moyin lived in Ruan Shi's body and slowly gained her memory:
Ruan Shi was abducted by traffickers at the age of five. She dropped out of school at the age of thirteen to pick up customers at a KTV. She was found by her parents at the age of seventeen, only to find that she no longer had a place in the family.
It turned out that when the Ruan family's parents suddenly lost Ruan, they searched for her for more than ten years without success and were heartbroken. When a comrade-in-arms died of illness, he took their daughter Mosin home and decided to treat her like his own daughter.
Mo Xin replaced Ruan Shi, became the apple of the Ruan family's eye, and fell in love with Yu Zhicheng, but Ruan Shi was found back.
...
Ruan Shi was not willing to occupy the magpie's nest like this. She had no culture and no character at all. She viciously and selfishly believed that Mo Xin was the culprit who took away her happiness, and stubbornly asked Yu Zhicheng to marry her.
The Ruan family finally found their biological daughter, but they are not sensible people. They feel guilty about Ruan Shi and are afraid of having any rift with their adopted daughter Mo Xin. They comfort each other and hope that Ruan Shi can integrate into the family.
Until one time at a ski resort, Mosin fell from a height and became a vegetative state. Before Mosin fell, only Ruan Shi and Mosin were standing on the high platform.
...
Ruan Shi went crazy, and no one knew why she went crazy, except Yu Zhicheng.
Ruan Shi woke up again, and everyone thought it was the doctor's work, except Qin Moyin.
Intention: follow your heart