Imprisoned for a Hundred Years, I Descend the Mountain as an Invincible Master

[Master Returns from the Mountains + Invincible Cultivation + Fast-Paced Power Fantasy + Ruthless and Decisive + Multiple Planes] The world is flawed, and spiritual energy has run dry. An immortal lord left behind a pocket dimension on Earth, where a village boy was sucked inside while climbing a mountain to raid a bird's nest. A hundred years later, following the immortal lord's instructions, the boy cultivates a Golden Core and returns to the mortal world, beginning his legendary life.

Anyone who makes it this far has nerves of steel.