The state of Qi raised its troops to attack Lu.
Lu Xiangguo recommended Wu Qi as a general to resist the Qi army.
The civil servants of the State of Lu objected vigorously. The reason was that Wu Qi's wife Gui Luan was the daughter of the Tian family of the State of Qi. If the couple were deeply in love, Wu Qi could not help but betray her, so what should he do?
Wu Qinai drew his sword and cut off his wife's head, and brought her to Duke Lu in exchange for the title of Commander-in-Chief of the State of Lu.
This incident changed the life of Gui Luan's sister Gui Yuan, turning her from a rich and well-dressed daughter of Qi State into a lonely assassin walking on the dark and winding roads, embarking on a lifelong journey of revenge.