Madara's story mixed truth with lies, but Guangtai had become engrossed without realizing it.
The Rinnegan and the Sage of Six Paths belonged to legend, yet from Madara's tone, they seemed to have truly existed.
"Senior, much of that history has vanished from the Shinobi World. There's no evidence left to follow. How do you know about it?"
"It's all recorded on the Uchiha Stone Tablet, including how to evolve the Rinnegan."
Guangtai, who had remained fairly composed until now, could no longer stay calm. The Uchiha Stone Tablet actually contained a way to attain the Rinnegan.
"Once your eyes evolve into the Eternal Mangekyo Sharingan, look at the Stone Tablet again. Its contents will give you a clue.
After the battle at the Valley of the End, I spent more than twenty years sitting in this Underground Cavern before I attained the Rinnegan."
Guangtai calmed down a little. He knew Madara had no reason to lie to him about this.
Madara's voice filled the Underground Cavern. For his plan to succeed, Guangtai had to grow stronger quickly.
Madara held nothing back in teaching Guangtai, not even the principles behind various Wood Release Techniques or ways to strengthen them.
On a hill in the Land of Fire, stones covered the slopes. Light footsteps sounded, and a masked figure appeared among the rocks.
The figure was Fugaku Uchiha. He had come to find stone for a tablet.
The Uchiha Stone Tablet itself was ordinary. It was Black Zetsu's schemes that had made it otherwise.
In just half a day, he had made a rough tablet. A little more time polishing it would finish the job.
Two days later, a new Stone Tablet was ready. Fugaku placed it in the clan's meeting room.
He carved a Warning Formation and a Sealing Formation