In the lower part of the box, there was a long metal rod with the thickness of a thigh connected to it, and Lu Tao knocked on this pillar with the black dragon sword in his hand, only to find that the pillar was completely solid and almost indestructible. The incomparably sharp black dragon sword struck on it, leaving no trace behind.

Lu Tao shook the black dragon sword in his hand, he could feel it, and there was still a joyful mood transmitted from the black dragon sword, as if telling Lu Tao to let him continue to dig down. Lu Tao had a headache, from this black pillar, Lu Tao could probably guess that the bottom part would not be short, if he was allowed to dig all the time, he didn't know how long he would dig.

Uncle York's side is also running out of food, and the two must walk through the Grand Canyon in a short time to find the hidden treasures in Uncle York's memories.

Thinking of this, Lu Tao glanced back at Uncle York, who was still lying on the ground, seemingly unwilling to get up, and asked, "Uncle York, what are you looking for when you come to the Grand Canyon?"

Lu Tao had always thought that Uncle John had come to the Grand Canyon to look for the Black Dragon Sword, but later found out that Uncle York had lost part of his memory, so he gave up this idea, after all, Uncle York couldn't even remember the Black Dragon Sword, so how could he come here to find the Black Dragon Sword? The thing Uncle York was looking for should be the same as what he wanted to find when he lost the Black Dragon Sword last time, the question is, what is this thing? Let Uncle York never forget, even if he has amnesia, he can't even remember his wife and daughter clearly, and he remembers the thing he is looking for clearly.

“...... It's a crown. Uncle York hesitated for a long time before he spoke: "Actually, there should have been a long, long time ago here, there was a text, after my father came here, he accidentally got an ancient book, that was before I was born, my father spent a long time translating this ancient book, and the ancient book recorded a crown, the crown is in the Grand Canyon, as long as you find this crown, you can open the door to the world above." My father wanted to go back, so he was looking for this crown, and he had been to the Grand Canyon many times, but at that time my father always refused to bring me, and the last time, my father disappeared into the Grand Canyon, and he didn't even leave a note. ”

"I see. Lu Tao nodded in understanding, speaking of Uncle York, it seems that he wants to find the crown, but in fact, he should want to find the trace of his father who disappeared in the Grand Canyon.

In this way, it is even more necessary to hurry up, Lu Tao glanced at the dark iron pillar that attracted all his attention, and made a decision, dig a distance of up to one meter down, if nothing changes, Lu Tao plans to leave here.

Just do what you say, let Uncle York rest outside first, and Lu Tao continued to dig the dirt on the ground with the black dragon sword in his hand.

Halfway through the digging, Lu Tao felt that the blade of the sword had touched something, and when he dug it out again, he found that there was a crossed iron pillar below, and on one side of the iron pillar, there was an oval-shaped hole, as if Lu Tao had embedded something into it.

Lu Tao looked at it for a long time, and always felt that the shape and size of this elliptical were a little familiar, and after thinking about it, Lu Tao stretched out his left hand, and the golden egg suddenly appeared in his hand, fortunately, Uncle York is resting on it now, if he sees this scene, he will be shocked.

Placing the golden egg horizontally into the pit on the iron pillar, Lu Tao found that the size was just right, as if it was tailor-made for the golden egg.

Golden Egg seemed to be very shocked that he had been put into the pit, so he began to vibrate again, as if someone had put a motor in it, and the more it shook, the faster it shook, the faster it shook.

A sound of machinery came from the top of the iron pillar, and then, the golden egg shook itself out of the previous pit, and after rolling slowly a few times, it rolled to Lu Tao's feet, Lu Tao picked up the golden egg, and let him continue to turn into a golden light and not enter his consciousness.

"Huh, come up! Something seems to have changed on this box. Doctor York's voice sounded overhead, and when he looked back, he found that he had dug too deep for a while, and he could only see the huge octopus in the sky and Uncle York's head poking out.

It took two strokes to hold the edge of the pit that was dug out by Lu Tao himself, but fortunately, the soil was relatively hard, so Lu Tao came outside in three or two strokes.

Sure enough, outside the iron box found at the beginning, there seemed to be a gap of one length at a glance, Lu Tao looked at it for a long time and didn't see what it was for, could it be the place where the key was inserted?

The emotion that came from the black dragon sword changed from joy to eagerness, Lu Tao looked at the dark blade, and suddenly reacted, so he walked to the side and inserted the sword body directly into the gap that suddenly appeared outside the box.

As Lu Tao completely inserted the blade of the Black Dragon Sword into the gap, the Black Dragon Sword let out a soft groan, and then, bursts of smooth flow were transmitted from the strange objects connected up and down, and the colorful light was like a waterfall, constantly washing the same dark surface of this object that Lu Tao dug out from the ground.

The big octopus directly above his head seemed to sense something, his tentacles kept moving, and a roar came from all directions, echoing in the Grand Canyon, making it impossible to hear where the sound came from.

The circulating colorful light did not last long, and when Lu Tao glanced up at the octopus, the light disappeared, everything returned to calm, the tentacles of the octopus above his head no longer moved, and all the sounds disappeared.

"Hmm...... What just happened?" Uncle York shook his head, as if he didn't see the colorful light just now, he looked at the black dragon sword inserted on the iron block with some confusion, and asked suspiciously: "Lu Tao, what are you doing with the black dragon sword inserted into this?"

Lu Tao: "......"

You know, Lu Tao just inserted this sword in front of Uncle York, and in a blink of an eye, Uncle York forgot everything completely, but Lu Tao couldn't figure out whether there was something wrong with the colorful lights just now, or something wrong with Uncle York's head.

Shaking his head, Lu Tao did not answer Uncle York's question, but pulled out the black dragon sword again.

As soon as he pulled it out, Lu Tao felt that the feeling in his hand was not right, and when he looked closely, there seemed to be an extra ruby on the hilt of the black dragon sword, exuding a red light, which looked a little magnificent and attractive.

Lu Tao suddenly realized, in yesterday's dream, the sword was inlaid with countless gems, which looked gorgeous, and now looking at the black dragon sword, except that the color still has not changed, there is finally more similarity.

Perhaps, as long as he finds more of these strange things, he can restore the Black Dragon Sword to its original appearance, as for what these things are, Lu Tao has no clue for the time being, and there is no way to compare them with any objects in his memory.

"Huh, why do I feel that this sword is different?" Uncle York no longer wondered why Lu Tao inserted a sword on the black iron, but pulled it out around Lu Tao, and the black dragon sword inserted on the ground turned around twice, as if he had found something.

Lu Tao pointed to the extra gem: "It's really different, you see, there is an extra gem on the hilt." ”

"Gems, this thing isn't very valuable, I still think it looks better. Uncle York reached out and touched his beard, after so many days of not taking care of it, Uncle York's originally smooth chin finally grew a fine beard.

"It's not very valuable, what do you mean?" Lu Tao was a little strange, the gem was not very valuable?

"yes. Uncle York nodded: "Gems here are almost the most common kind of stones, so they are not very valuable, when I was a child, I was still a little interested in these shiny things, not to mention, there is a big box of gems under the bed in my room, put it there, no one wants it." ”