Exiled as a Discarded Son to a Deadly Frontier? I'm an Emperor Reborn

[Decisive and ruthless, immortal cultivation, classic fantasy, growing stronger on the frontier, reborn Immortal Emperor] In his previous life, Lin Hao was the Immortal Emperor of Ten Thousand Formations, famed for traversing the heavens and subduing the myriad races. But after failing to break a formation in a forbidden zone, his soul transmigrated into the cultivation world. Reborn, he finds himself the Lin family's castoff, sent by his clan to a deadly frontier beset by beast tides and made city lord, responsible for guarding the pass. The beast tide bears down, the grand formation is on the verge of collapse, and the city's defenders are plunged into despair. Everyone mocks him as a useless cripple with a shattered dantian. In the midst of this desperate situation, Lin Hao raises a hand and lays down a piece. He turns the defensive formation into a deadly trap, and blood-red formation patterns sweep across the eight directions, slaughtering every invading foreign race!