My Coffin Leads to the Apocalypse, Shocking the Demonic Path

Three thousand years of cultivation, with peerless talent! But with demonic energy in decline, the orthodox sects sweep across the world! Han Chen, a heretic cultivator, is forced to recuperate in a coffin, waiting for the next awakening of the demonic world's spiritual leyline~ Unexpectedly, when he opens his eyes again, he finds himself in the apocalypse of another world! Taking in the overwhelming stench of decay around him, gazing at the top-grade roving corpse wandering before him and the eerie creatures steadily closing in, he can hardly believe it. Stunned, he says: “I'm not dreaming, am I?” Smack! He slaps a zombie. Yep, his hand hurts. It's not a dream! He really did transmigrate! The locals seem to call this place the apocalypse? The corpse energy that was so scarce in his previous life is incredibly pure here, and it's everywhere! Unclaimed, top-grade zombies are roaming all over the place!? Are we sure this isn't heaven, but the apocalypse? Han Chen laughs. “I'm a demonic cultivator! Why reward me with an apocalypse!?” While everyone else struggles to survive the apocalypse, he discovers that he's already invincible! Now, how can he get back, wielding an endless supply of demonic energy, and lead the zombies to slaughter those scum from the immortal cultivation sects!? Please, answer quickly! I'm in a real hurry!