"I’m going to try to use a battle technique now, so I need you to make sure that the black substance is replaced as soon as it disappears. It should never go away." Lu Yin said as he looked over at Hen Xin.

The gatemaster was taken aback. "You want to keep going?"

"That’s right," Lu Yin said.

Hen Xin grew solemn. "Consider this carefully. You’ve already experienced that same pain many times now, so you should understand that, no matter what, that pain will never diminish. You will also never grow numb to it. There was someone in the past who asked the Dao Monarch to do exactly what you are asking me to do, and the attempt quickly caused his mind to break. He went mad, and not even the Dao Monarch was able to help the man recover."

"How long did that person endure?"

Hen Xin took a deep breath. "A day and a half."

Lu Yin was quite surprised. "Someone endured that pain for a day and a half?"

The pain was so intense that even Lu Yin struggled to deal with it. Even if his mind could endure, his body could not. He could not understand where the pain came from, or how the ancient Dao Monarch had discovered it. But if Lu Yin did not use Extremes Must Be Reversed, he knew that he would not be able to endure the pain for long.

The fact that someone had endured such pain for an entire day and a half indicated that their willpower had been unbelievable.

"Don’t worry about me. Let’s just get started. If I can’t handle it, I’ll just stop," Lu Yin stated. As soon as he finished speaking, his body started to dry out.

Hen Xin had already spent more than twenty years...