Wanted Worldwide, I Slay Gods Through Devouring

The protagonist, Lu Ran, in order to rescue his younger sister, Lu Yaoyao, who was forcibly abducted to serve as a saintess, concealed his identity and used a fringe sect as a stepping stone. He frantically hunted down high-level enemy martial artists and exotic beasts. Relying on "devouring," he continuously stacked his innate skills, fighting his way from the bottom up to the floating island. Ultimately, he completely overturned the rule of the Tianshu Sect, shattered the bloodline hierarchy, destroyed the stellar array, returned all the devoured source power to the land, and granted everyone the right to equal survival.

Synopsis from DramaGo.