Naruto draws Asura Chakra at the beginning

Jiraiya and Minato at the side naturally heard Naruto's movements, and then quickly came to his side and asked him, "What's the matter? What happened?"

"This wooden stake is very interesting. When you hit it, it will return a portion of it, and the returned force can temper the muscles to increase the strength of the physical body," Naruto said.

Under the watchful eyes of Jiraiya and Minato, Naruto directly clenched his fist and hit the stake,

Different from the last time, this time Naruto directly added the aura.

With the blow of the fist, a flash of lightning burst out from the stake,

In addition to the strength of the return, the lightning also came to Naruto's body along his arm, but the lightning existed for a very short time, and disappeared without a trace with just a crackle.

Jiraiya and Minato were shocked when they found out that the lightning flashed, and they were relieved when they saw that Naruto was fine.

After the lightning on his body dissipated, Naruto said, "This should be the practice field left by the Ninja sect before. These wooden stakes are very helpful for cultivation."

"When you simply use physical strength to hit a wooden post, the strength returned will temper your muscles. When you use Chakra's assistance, it will generate electric light to purify Chakra,"

"It's a pity that this kind of electric light is still too weak for people who practice spiritual energy,"

Jiraiya and Minato nodded when they heard the words, and the latter said, "It's normal, but I finally understand why the ninjas in the Kingdom of Thunder are generally stronger than others in physical body."

"I think the Land of Thunder should have mastered other training grounds besides this place,"

Jiraiya heard the words and said, "That's right, and after this kind of training, the ninja's strength will be greatly improved,"

"This can also explain why ninjas are weaker from generation to generation,"

Apparently the information from Indra is basically true,

In order to prevent someone from breaking the restrictions of the ninja world, Otsutsuki Yuyi hid all the previous cultivation methods,

The handful of people who were the strongest in the ninja world before were all inextricably linked with the Otsutsuki clan.

As the bloodline fades from generation to generation, these ninjas with the bloodline of the Otsutsuki clan are not as strong as the previous generation.

Since ancient times, there have been very few civilian ninjas who have reached the pinnacle of the ninja world.

After hearing this, Naruto nodded in agreement, then looked at the row of wooden stakes on the square and said, "Why don't we dig some wooden stakes and go back to study it?"

Jiraiya and Minato were also moved when they heard the words, the former said uncertainly, "Should it be possible?"

Minato also echoed, "A few sticks shouldn't have any effect, right?"

This underground practice place should have never been discovered,

After all, it was in a remote place like the Yunlei Grand Canyon, and even more so, it was nearly a hundred meters below the ground.

If they didn't look for these places on purpose, they definitely wouldn't have found this place.

Seeing that both Jiraiya and Minato agreed, Naruto started his excavation.

I saw him take out the shovel, then pour in spiritual energy, and start digging.

Naruto didn't just dig the stake, but also dug part of the ground around the stake. . .

Anyway, the three of them carried enough storage rings, so they were not afraid of running out of space.

After Naruto dug one, Jiraiya and Minato stepped forward, carefully observed the stake,

After a while of beating and beating, both of them released their mental power to investigate,

Finally, they found that it was not just a simple wooden pile, but that there were traces of splicing on the wooden pile.

Moreover, the material of the wood is not ordinary wood. Because there was too little research on it back then, the two of them did not recognize what kind of wood it was.

And a row of fist-sized stones were placed in the center of the wood. This kind of stone looks ordinary on the surface.

But after the spiritual power penetrated, both of them discovered the power of thunder and lightning inside,

Zilai also compared it with the encyclopedia of refining tools he had learned, and then said, "Is this the Thunder Stone?"

"Teacher, do you know this kind of stone?" Minato asked him.

Zilai also nodded and said, "There is a record in the Encyclopedia of Artifact Refining, Thunder Stone, it has a strong effect on body refining, and it can also be used in forging weapons. It is very effective,"

Naruto smiled after hearing this, and then looked at the standing wooden stakes beside him,

Then he worked hard, and finally Naruto dug out twenty wooden stakes, and then stopped,

These stakes are all one meter in diameter, so Naruto put them all in a storage ring,

As for the remaining wooden stakes, Naruto is not digging them. When he returns to their time, he can make another trip to Yunlei Grand Canyon if necessary.

If it hasn't been discovered here yet, it won't be too late to dig them all up by then,

After putting away the stakes, Naruto came to the side of the stone wall and placed a mark of Flying Thunder God,

In this way, it will be much more convenient to come here next time. As for the enchantment, he is not afraid. The Flying Thunder God Art with the imprint is known as the nemesis of all enchantments. As long as there is an imprint, no enchantment can stop him.

After putting away the stakes, the three of them did not stop there, and continued to explore the underground cave. After all, they came to find a way to get back.

Then walking inside, Naruto and the others also found the warehouse where the weapons were piled up, and the word Ninja was engraved on the door of the warehouse.

This also confirmed their guess that this place was indeed left by Ninzong.

After walking in, the inside is full of shelves, but unfortunately, under the ravages of time, these wooden shelves have basically decayed long ago.

The same is true for the weapons placed on it. Naruto walked over and wanted to pick up a ninja sword, but he didn't expect that it would fall apart as soon as he touched the wooden frame, and the ninja sword was also broken.

Naruto snorted when he saw this, and then motioned for Jirai to go out with Minato,

When Naruto came to the door, his cheeks puffed up, and he spit out a gust of wind, blowing into the warehouse,

As the strong wind blows in, there is a crackling sound,

When the gale was over, Naruto turned on his perception and saw that there were no complete wooden frames and weapons inside, and then he said, "It's a pity."

Although these weapons are just ordinary weapons, no one has too much of such free things, right?

Then the three of them left here again, and walked further inside,

Going further inside, the three of them encountered a building similar to a library.

It's a pity that the words on the door were a little blurry, and none of the three could see what was written clearly.

Carefully push the stone door open, and the goal is the same row of wooden frames, but this time there are scrolls on the wooden frames,

Looking at the huge number of scrolls, the three of them felt mixed feelings,

The joy is that there are so many scrolls here, maybe there will be useful information for the three of them.

The worry is that if these scrolls are the same as the weapons just now, then they won't get any information,