Why Did the Engineering Girl Travel Through Time?

[This is the first novel written by the author. The initial preparation is a bit long, but it gradually gets better later] Alternate history! Alternate history! Alternate history! Important things are said three times, and I apologize if there are any similarities with official history] Marriage first, love later [Clever Ghost Physician Girl] X [Aloof Dali Temple Shaoqing] Suspense direction ~~~~~~~~~~I~am~divided~line~~~~~~~~~~ Everyone in Tokyo knows that this girl from General Mingwei's family, the head of the house, Mu, is in love with the young man of the Jiang family. There is also a rumor in Beijing that the husband of the Jiang family likes a girl from the Lu family An official decree separated lovers Unexpectedly, as soon as the imperial edict was issued, Chang Mu was assassinated and was killed. Scientific researcher Wang Yaoyao traveled through time because of this. She found her murderer for Chang Mu She lived again for Chang Mu However, it didn't take long for strange things to happen in the west. An explosion occurred in Dai County, which was governed by my father's cousin. Then a large number of arms disappeared, and the county magistrate also hanged himself. Fang Qi was entrusted to investigate the case, but there was no news from him. My mother was devastated by the news and soon became seriously ill and died of illness. Chang Mu was grieved and went to Dai County to find the truth. In Dai County, she met Jiang Tahuai again, and this encounter tightly tied their fate together. There are many doubts about the arms case. She and the Shaoqing of Dali Temple work together to find the truth. During the investigation of the case, Jiang Tahuai gradually understands his own heart. However, this is ultimately a political marriage without a wedding. What you think is the truth is actually just what power wants you to see. What you think is love is actually just a use. Whoever is sincere first will lose miserably. Lu Shuyao's last line of defense was shattered because of Jiang Tahuai's departure, and she gradually lost control of reason and became a pawn of the powerful. "Is this how you repay my family?" "Shu Yao, the fate between you and me has ended. I have repaid everything I have owed over the years. You have done a good job, so please let yourself go." "Let it go? How can you let me let go of the blood feud? How can you let me let go of the hundreds of innocent lives lost in my Lu family? How can you let me let go of the relationship between you and me for more than ten years?" The truth gradually emerged, and some people finally couldn't hold it in anymore. They plotted against her even if it didn't work out. Mr. Jiang secretly protects his wife, but still has a tough mouth "You were plotted against? That's great, one less scourge will befall the Song Dynasty." "..." "Madam, I was wrong" "..." "Is it really wrong?" "Sleep on the floor tonight" Concept: The heroine travels to a family of generals and "re-recognizes" the hero because of an arms bombing case, and begins to solve a series of cases. The heroine also applies some modern techniques to this era. In the process of supporting each other, the hero and heroine develop feelings for each other.