The World of Immortality Is Full of Weird Things, I Rely on Reasoning to Survive

Shen Wujiu traveled through time and started in the death row of Zhenyuan Division of the Dayuan Dynasty. He was charged with murdering his boss. In three days, he would be skinned and boned to make the "Human Face Pill". In this world where immortal cultivators treat mortals as great medicine, where weird things run rampant and murderous intentions arise at every turn, Shen Wujiu finds that his only source of support, apart from his ten years of criminal investigation experience in his previous life, is an extremely small "Heaven rewards those who work hard" panel. There is no invincibility at the start, no talisman to instantly kill the gods, only a little bit of experience points that can be obtained by surveying the scene, dissecting corpses, and reasoning logic. In order to survive, he could only stay rational in extreme fear, use the most cowardly tone, complain crazily in his heart, and then use the most hard-core modern criminal investigation methods to forcibly uncover a path to the sky from each of the weird and bizarre murder cases!