Explosive Stones and Spirit Stones

As time passed, the scratch paper piled higher around Lu Zeming. Before long, it filled the room, and he had to have someone carry it out and bring in fresh paper and pens.

For nearly a week, Lu Zeming spent every moment he wasn't meditating to restore his mental energy studying Runes. The scratch paper he had sent out could have filled three carriages.

The three books on Runes couldn't possibly cover every Rune.

Lu Zeming had his own approach: classify, organize, make bold guesses, and test them carefully.

Take, for instance, a Rune in the Cursed Seal of Heaven that looked like an upside-down 3 with two rings hanging beneath it.

None of the three books described it, but Lu Zeming found a similar Rune in one of them.

That Rune transmitted energy in one direction. From this, Lu Zeming inferred that the one with two rings transmitted it in both directions.

He then drew it on paper using his power and tested it.

Once he confirmed it worked, he recorded it in his own booklet and filed it away.

The more he learned, the more Lu Zeming felt he had opened the door to a new world.

Runes weren't just Runes. They also involved mathematics, Five Elements conversion, and astronomy.

Lu Zeming had a feeling he was about to grasp a power capable of destroying heaven and earth!

The Cursed Seal of Heaven was like a puzzle made of Runes. Orochimaru had set the questions; Lu Zeming's job was to answer them.

Two weeks later, Lu Zeming stopped taking notes and closed his books.

He now had a solid plan for breaking the Cursed Seal of Heaven.

If the Cursed Seal was itself a formation, brute force wasn't the answer. He needed to find its Formation Core—the central