Cultivate Or Die

In the Dark Demon Continent, strength governs the laws, and the mightiest fist always prevails. 
Unfortunately for Wu Yang, even his younger brother surpassed him in strength. In the Wu family, he was the weak link, a guy who couldn't even get past level two of the Qi Stage, living his life on the struggle bus.
Feeling down about his luck, he dived into novels where the hero got powers, leveling up to world domination. 
He was legit jealous of fictional characters, praying for a special power of his own.
"The Invincible Manual of the Godslayer has been recognized as the master of the Invincible Manual!"
Upon hearing the longed-for words, he felt ecstatic. It was the Manual of the Godslayer, the incredible technique cultivated by the novel's protagonist. 
However, this newfound power wasn't easy to assimilate.
"Cultivation breakthrough: Rank Two. Time: three days!"
Something he hadn't achieved in years now became imperative to do in just three days; otherwise, his soul was toast.
Curious about his predecessors, the manual's comeback hit him like a lightning bolt.
"Eighty percent of them killed themselves, and twenty percent of
they failed to complete the mission and died on the path of
cultivation."
"..."