Prisoner Lanxing: I Will Kill Tianmen at the End of the Law

"The doctor said I still had three months. I believed it, so I decided to go back to my old house and wait for death. Until I accidentally dropped blood on the portrait of my ancestor, and the ancestor named Lu Yunfeng opened his eyes in the painting. 'Idiot,' he said, 'This is not cancer, this is your ancestor who I left to you, the most awesome household registration book for cultivating immortals in the universe.'"