Immortality: Starting by devouring a unicorn viper

Li Bufan never dreamed that after waking up one day, having just paid off his mortgage and received a promotion and raise, he would also be on this time-traveling journey...
"What?! Everyone else who transmigrates becomes a young sect master or a young clan leader, but I'm a fisherman? And the fish I catch are less than half left after passing through the hands of the fish boss!"

The story begins with a cataclysmic event. Watch as Li Bufan, through hard work and a "small" cheat code, gradually embarks on the path to immortality.
P.S.: All astronomical phenomena refer to the main world, the eternal world.
New author, please be gentle with your words.

Novel keywords: Immortality: Starting by Devouring a Unicorn Viper (no pop-ups), Immortality: Starting by Devouring a Unicorn Viper (full TXT download), Immortality: Starting by Devouring a Unicorn Viper (latest chapters available to read).