"Fake father-in-law VS Long live the Lord"
She was a girl who died suddenly and passed through the book, becoming the villain eunuch Qi Yun in the original book. She wrote the book herself. Qi Yun had a tragic ending. She didn't want her ending to be like this, so she decided to change her fate and tamper with the ending. Qi Yun had an apprentice named Xiao Guizi. She believed that changing her life would start with changing her apprentice's name. After much deliberation, she asked her apprentice to change her name to Qi Yu in the original world, but she didn't know that a series of butterfly effects would turn Qi Yu into the ultimate villain...
Concept: Things are connected and a sword has two edges