Mo Youming put down Suixin, walked back to his seat, and looked at him with interest.

When Sui Xin opened her eyes, her white clothes had turned black, her skin was pale, and long fingernails had grown on her hands.

His face was also pale, but he felt like he had inexhaustible energy inside his body.

Upon closer inspection, dark demonic energy surged through the meridians, and the body was in a state of chaos, with only the Pool of Life still radiating light.

Sui Xin was taken aback. This... doesn't seem to be anything special. Is this the demon?

I just couldn't appreciate those long nails, so I quickly trimmed off the excess.

He looked up at Mo Youming, "So you're going to turn me into a demon?"

Mo Youming was also taken aback, then laughed heartily, as if he had gained some insight, "Everyone says that human nature is inherently good, but is the nature of demons inherently evil?"

Listening to his words, Sui Xin couldn't help but ponder them. It seemed to make some sense, but what about those demons who were bloodthirsty by nature? Weren't they born that way?

After a moment's thought, Mo Youming raised his hand and waved it. The surrounding scenery began to flip like shards of glass. A white light flashed, and he subconsciously closed his eyes.

When they opened their eyes again, everything was different. It was as if they were in an ancient battlefield, filled with the stench of blood. Before their eyes were flowing blood and corpses all over the mountains and fields. The people in black robes were demons, and the people in white robes were humans.

"Where is this?" Sui Xin asked subconsciously, looking at the blood with a strange excitement, a wisp of black light appearing in his eyes.

"The Battle of Xiguan between humans and demons was the most brutal battle fought back then. A million humans died before they could repel the demons and lay the foundation for human victory," Mo Youming said.

With another wave of his hand, the scenery before him slowly changed. All the human cultivators were wiped out, while the demons actually stood up again. A few with high cultivation were also eliminated and remained motionless in place.

"The rest are all demons at the True Essence Realm and below, and you have to kill them all," Mo Youming said with a smile.

"Are you crazy? There are millions of demons. How can we possibly kill them all?" Sui Xin thought he was joking and retorted.

“During this time, you will not die, and you will have unlimited spiritual and demonic energy. As long as you kill them all, I will let you go,” Mo Youming said in a serious tone.

Looking at him, Sui Xin realized he wasn't joking, and her eyes gradually hardened. "Are you serious? You'll let me go after you're done killing me?"

"I promise".

"Okay, I'll kill them."

"Okay, let's get started."