After a Hundred Days of Raising a Corpse, I Turned Her into a Drought Demon?

Chu Yun transmigrates into a parallel world plagued by supernatural horrors. He activates the Strange Creature Cultivation System! He thinks he'll simply follow the usual path to becoming a supreme overlord. But who could have guessed that a strange coffin would appear before him! [After three days of nurturing in the coffin, the female corpse breaks through to the Ferocious level!] [After ten days of nurturing in the coffin, the female corpse advances to Green Corpse!] [After thirty days of nurturing in the coffin, the female corpse breaks through to the Nightmare level!] [After one hundred days of nurturing in the coffin, the female corpse advances to Drought Demon!] [One hundred days of cultivation complete. The Drought Demon is born!] That day, the coffin opened. An exquisitely beautiful female corpse stepped out with a seductive sway, revealing a pair of bewitching eyes. In that moment, the world was shaken! The legendary King of the Undead had been born! But Chu Yun only chuckled. "This is enough to shake the world? You really underestimate me." "The Drought Demon female corpse is just one of my many strange creatures." "I have seven more Supreme-level strange creatures just like her!"