Mortal Fan Fiction

I like to read novels, and I have read many, many novels. I just want to see if there is a novel about cultivating immortals with scientific and modern knowledge, so when I have nothing to do, I will make up my mind and worry about it. Will writing a little bit every day create a different habit? It's so boring. When you wait, you will get old and don't want to move anymore. Nothing will matter anymore. I obviously want good results but I live a virtual life This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.