Wangfei de Hun Hou Zhinan
Princess’s Happily-ever-after Marriage·王妃的婚后指南
A skilled assassin from the modern era is transported through time and reincarnated as a princess married to a brilliant and influential man in a different country. She refuses to be subservient to him or to be kind toward his other wives. If anyone dares to oppose her, she is ready to take them on.