Not Mentally Ill! What Kind of Immortality Are You Cultivating!

My name is Cheng Yu! I am an immortal cultivator. In this continent where spiritual energy is consumed, being an immortal cultivator is already a thing of history. I have lived for thousands of years! The cultivation level is extremely profound! But the hateful humans actually forcibly took away my golden elixir. They locked me in a room and injected poison into me, making me unable to resist! They want to take away my cultivation! But I won't let them succeed! I have turned my life's work into a book called "Cultivation Guide for Mentally Retarded". Juniors, study, join Zhimen, and protect this world! You are the next strongest king! My name is Cheng Yu... That's what I said before I took the medicine! I just had a stone surgery! I'm a psycho! Don't take my word for it! Don't practice! Don't learn it! ! !