The Yellow Springs Demon Compendium

Xu Wanning is an ordinary office worker whose biggest dream is to earn enough money to go home, buy a car and a house, and live happily with her family. But things don't go as she hoped. After going to meet a client, the ill-intentioned client sells her to a dark organization. While escaping, Xu Wanning stumbles upon a book of demons by sheer chance and enters a strange, fantastical world...

After Xu Wanning is forced to make a contract with the book of demons, she follows its instructions and eliminates her rivals one by one, helping her target rise to the highest position. But then she discovers that an even greater conspiracy is waiting for her...