"Next, I'm going to use a battle technique. When that black substance disappears, you'll need to apply it again so there's no gap," Lu Yin said, looking at Hen Xin.
Hen Xin was surprised. "You're going to keep trying?"
"Looks like you know what I mean," Lu Yin said.
Hen Xin spoke gravely. "Think it through. You've felt that pain so many times, so you should know it won't fade or grow numb, no matter how long you endure it. It'll only get worse. Someone once asked the Dao Master to help him keep experiencing it. Eventually, his mind broke. After he failed, he was like a madman, and even the Dao Master couldn't restore him."
"How long did that person last?" Lu Yin asked.
Hen Xin took a deep breath. "A day and a half."
Lu Yin was astonished. "He lasted a whole day and a half?"
Even Lu Yin had found that pain hard to endure. His will might be able to take it, but his body couldn't. He didn't know where the pain came from or how the Ancient Dao Master had discovered it. But from what he'd experienced, without Extreme Reversal, his body might not last even half a day.
For someone to endure a day and a half, his will must have been extraordinary.
"Enough talking. Let's begin. If I can't take it, I'll stop," Lu Yin said. Then his body visibly withered.
Hen Xin had spent more than twenty years in the Fifth Continent. He knew about the Nine Mountains and Eight Seas of the Dao Origin Sect era, had heard of Ku Zu, and had seen Lu Yin use Extreme Reversal. Every time he saw it, he was struck by how mysterious the battle technique was.
Anyone who reached the Ancestral Realm was