Urban Fantasy: the Strongest Life-Extending Master

It is said that the King of Hell will tell you to die at the third watch, but will never leave you until the fifth watch. However, Luo Yunshan, who traveled to the Great Yan Kingdom, obtained the life-extending cultivation system, forced people to extend their lifespan, broke the shackles of fate, and became the strongest life-extending master! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.