MTL - Magic Tower Starry Sky - Chapter 52 1st celestial prediction

Yang An transmigrated into a world of Demon Fiends where everything had been tainted by filth.Anyone who stepped onto the path of cultivation, whether immortal, god, or Demon Fiend, would have to pay a great price, which caused the distortion and abnormality of this world.Fortunately, he discovered he possessed the ability to completely perform Purification on all sullied things, capable of eliminating all costs.

Ning Yechen used to be the Demon Lord. He singlehandedly took over the Demon Realm and attacked the Heavenly Realm. His name preceded him throughout the Six Realms. He got tired of fighting, so he quietly went into seclusion and became a happy hermit.One night, an Empress from the Heavenly Realm fell into the Mortal Realm after someone drugged her with an aphrodisiac. She inadvertently fell into his room, and they made out. After the deed, the Empress quietly left. Just when he thought he would never see her again, she showed up in front of him ten years later, bringing a child, saying it was his daughter and demanding accountability from him! “She’s your daughter. You have to be responsible for us!” Ning Yechen was stunned!

Having lived a normal life all his life and died without being able to fulfill his desire and when he’s given a task by a god, watch how he takes the protagonists girls while making it hard for the hero.

What would you say is the most valuable thing in this world?