Traveling Through the Underworld and Turning My Sister-In-Law into a Sick Girl

Yan Jiu traveled through time in a mafia novel and became the villain Yan Jiu in the book. According to the plot of the original book, Yan Jiu knew that the heroine Xia He he was bullying was going to marry his boss and become his sister-in-law in a few days. He also knew that after Xia He became his sister-in-law, the first thing he would do was to take revenge on him! What are the top ten tortures of the Qing Dynasty, including but not limited to uninstalling QQ... In order to survive, Yan Jiu began to crazily please Xia He, hoping that after Xia He became his sister-in-law, he would spare his life! However, subsequent developments became more and more wrong! After Xia He became a sister-in-law, she actually started to exude yandere attributes! "You want to run away after flirting with me? You have a good idea!"