The Evil King's Only Favorite: the Shocking Little Poisonous Concubine

It was a bit boring to read, and I didn't talk about the key points and rambled on. As a killer who traveled through time, he had no ability to cover up. He put on his sleeves very quickly, and the tire marks on his arms were clearly visible, and the sleeves would be damaged if he pulled them casually. When you kill someone, you wipe the knife with a newly bought handkerchief, and then throw it away at the scene after wiping it? Was this kind of killer in his previous life? Are you killing ants? The donkey's lips are not the horse's mouth!