It's Been a Hundred Years Since I've Done an Autopsy, and I'm Already Invincible in the World

[Lu Yu traveled through time and became a widower in Dali Temple. He just wanted to live a stable life. Lu Yu: "The dead are the safest. There are many disputes among the living. I only deal with corpses." [Awakening the 'Book of the Dead', opening the home page is 'Listen to the Death Rattles'. "Listen to the death words, and you will learn the clues to the real culprit behind the murder of the king." "Listening to the death words, you learned about the "Breaking Wind Sword Technique" hidden by Captain Li." "Listen to the Death Rattle, and you learn the secret map of the former prince's treasure." "Listen to the death words..." [When you autopsy a righteous knight, you can randomly inherit one of his unique skills; when you bury a demon giant, you can be exempted from all side effects of his skills and master them perfectly. Minister of Dali Temple: "Lu Yu, you are just a coward, how come you know better than all the experts in our Criminal Department put together to pursue murderers?" Demon Cult Leader: "Impossible! How can you use my 'Blood Transformation Magic'? And you haven't turned into a monster yet!" Lu Yu wiped the scalpel and sighed: "I just want the dead to rest in peace, and by the way... Let them live in me."