The reason why Sawin came to this conclusion had to do with his impression of the city, which he had felt from a moment ago, that the city and this kind of royal palace were very carefully planned, and the whole design had an extremely clear purpose. And judging from the rigorous layout of the city, the people who designed the city had a strong paranoia about the perfection of the shape, either a square or a triangle.

When he stood on the platform and looked out, he unconsciously sketched in his mind what the two peaks and the city would form into a shape, and soon a regular triangle appeared in his mind.

Savan believed that his judgment should be the same, and given the desire for graphic perfection of Onelens's people, this is quite likely, and it is likely that they planned the city according to this logic at the time. When you think about it, the quest for perfect graphics was not the preserve of the Onelens, and there are many examples of this in the many buildings and objects he has seen.

However, Sawan is also a little worried, the answer is not too simple, there must be no longer a few people who can see this kind of design idea, isn't the Sun Emperor and his royal family worried that their secrets will be easily discovered by others? Thinking about it, Sawin is a little suspicious of himself, things probably won't be so simple, right?

Suddenly, he remembered something, so he asked Olchi, "Olchi, you said that no one else was allowed to come up to this place except for the Sun Emperor and the royal family, is that true?"

"That's right, master. This place is the highest point of the empire, and no one can come to this place except the Sun Emperor and the royal family close to him. Olch replied respectfully.

"Hmm...... That's it. Sawan nodded. He had already understood why this simple answer had been kept secret for so many years, and there was only one reason, and that was that the triangle could only be seen when he stood on this high platform, and it was certainly not visible anywhere else.

In order to test his guess, Sawan flew down from the platform, found a few random places and looked in the direction just now, no matter what, it could not be the same regular triangle. It seems that the key to keeping this secret lies in the height and position of the platform, if you don't stand there, you can't see it, so the Sun Emperor doesn't have to worry about being discovered by others.

The more Sawin thought about it, the more it made sense, anyway, go and see, even the slightest possibility can't be let go now, otherwise it won't make sense to spend a few months here.

Savin returned to the platform at the top of the palace and re-established the apex of the triangle, and he was worried that he could not see accurately, so he asked the undead Olch to look at it as well, and after making sure that he had memorized the position, Savin flew back in the direction he had come. After flying about dozens of miles, I finally arrived at the intended place.

With nothing to see but yellow sand, Savin didn't know where to start for a while, and even if there was anything here before, it must have been buried deep under the sand now. Sawan still took the old way, revealed his true body and began to dig down, and soon dug a big hole,

After digging about ten meters down, Sawin saw nothing, so he gave up for the time being and started digging again in another place. I dug more than a dozen large pits in one go, but still found nothing, even if Sawan was a dragon, he was tired enough, so he had to stop and rest for a while.

Sawan thought to himself as he drank his water, "I didn't get anything out of digging so many places, didn't I get it wrong?" The more Sawan thought about it, the more he thought about it, and he slapped the Sword of Night on his back and summoned the undead Orch out.

"What do you command, master?" asked Olch respectfully.

"Olchi, this is the place I was looking for, right?" asked Savin.

Olch nodded and replied, "That's right, this is the area." ”

Sawan frowned and said, "Since it's here, why haven't I found anything after digging for a long time?"

Olch said: "I don't know what the master is looking for, maybe we can serve?"

"I'd like to see if there are any tunnels or caves like that, can you undead dig through the soil?" asked Sawan tentatively.

"No, I can't. Olch shook his head, "We undead can't interfere with physical things, but we can do it if we're just looking for a cavern." ”

"Can you see what is going on underground?" asked Savan, somewhat surprised.

"Yes, as long as it's not too deep, we can dive under the soil and explore. Olch said.

Sawan slapped his thigh and shouted: "Why didn't you say it earlier, I worked hard for a long time in vain, I just let you go and see it if I knew it!"

Olch looked rather regretful and said, "The master didn't give orders, and we didn't dare to act arbitrarily, I'm really sorry." ”

Sawin waved his hand and said, "Okay, no need to apologize, you immediately go to the bottom of the soil layer and take a look, where there are tunnels or underground buildings, in short, report any situation to me immediately." Go for it!"

With Savan's order, more than 10,000 undead attached to the Night Sword poured out together, and one by one green shadows soon spread around, and then disappeared into the desert one after another.

The wind continued to howl, and soon a pile of sand was gathering around Samin, and just as he was about to lose his patience, a green shadow suddenly appeared in front of him, startling Samin for a moment.

"Don't show up so suddenly. Savan said with a slight dissatisfaction.

"Yes, master. The undead replied, "Tell my master, we have found an entrance to the tunnel, about half a mile to the west. ”

"Really?" said Savan, who immediately stood up at the news, and took three steps and two steps towards the place where the undead were pointing.

When they came to the designated place, some of the undead had already gathered here, and Savin said to the undead: "Get out of the way, I'm going to start digging!"

"Yes!" the undead agreed, dodging around.

Sawin reappeared in his original form, desperately digging down with his paws, and a deep pit soon appeared in the desert, and suddenly Sawan raised his claws to dig into a hard object, and let out a "poof!" sound.

Sure enough, there was something! Samhain was overjoyed, and immediately dug around, and a huge pit was dug out, and Savin carefully removed the floating soil from the surface, only to see a large gray stone slab appear at the bottom of the pit.

"Is this the entrance to the tunnel?" asked Savin.

"Yes, master. The undead replied.

Sawan grabbed the edge of the slate and lifted it up with all his might, a huge slab weighing thousands of pounds, and it would take at least hundreds of people to lift it if it were an ordinary person. But the current Sawan is a third-order dragon, and although this weight is not light, it is completely within the range of Sawen's ability.

"Hey!" Sawan exerted his strength, only to see the stone slab slowly lifted off the ground with countless sandy soil, and as the stone slab rose, I saw a black hole appear below.

"Haha, there is a tunnel!" Sawan slowly pushed the stone slab aside, then went to the entrance of the tunnel and looked inside.

A cold wind blew through the tunnels, mixed with a stale smell. Sawan knew that such caves or tunnels that had been closed for many years could not be easily entered, and that the poisonous gases inside had to be dissipated. This experience was told to him by someone from the same mercenary group when he was a mercenary with Hortz, and he remembered that the mission was to follow Hortz to find the Sun King's headband.

In addition, this place is hiding a major secret, I am afraid that there are indispensable defensive measures in it, and it will be very dangerous to enter rashly, so it is better to let the undead go down to investigate first. Sawan immediately commanded to go down, and the undead swarmed into the tunnels, drifting leisurely into the depths of darkness.

Sawan lay down on the ground, planning to sleep in this pit for a while, this tunnel should not be short, probably the undead will not be able to explore for a while and a half, and he can take advantage of the time to rest for a while. Not long after Sawin closed his eyes, he suddenly felt a chill on Zhou's body, and he sat up with a spirit, only to see that he was surrounded by undead.

"Master, there is a situation. An undead said with a blank face.

"What's the matter, you're back so soon?" asked Samin, puzzled.