I'm Looking for Immortality in the Mortal World

An ancient world, a world full of fog. I wanted to live forever and just have a wife. I just wanted to be a son-in-law in peace, recite poems, drink wine, and be a salted fish. However, who would have thought that this is a world with gods, immortals and demons, and a strange place that no one has ever come out of alive. The so-called ascension is also a scam. Where is this place? What exactly is a fairy? No one knows, then train a few true immortals to break into the treacherous realm and uncover all the conspiracies! Also known as "Hiding behind the Disciple to Seek Immortality" and "My Path to Immortality Must Be Careful"