She married a dying prince and she won three babies.

"Okay." The three children rushed to stretch out their hands in front of Yu Yuanzheng.

Yu Yuanzheng asked Shangguan Ziqi to pick up Dabao first, took out a silver needle from the pouch on her waist, quickly pricked Dabao's middle finger, then reached into the stone bowl and squeezed it hard.

When a few drops of blood flowed into the small hole, the stone door actually opened a little.

But it only opened to one foot.

Everyone was worried.

What if the blood of the three children cannot open the stone door completely?

But now it is open one foot, enough for a person to go in sideways.

But it is hard to say how much of the contents can be taken out.

Yu Yuanzheng sucked Dabao's fingers in her mouth, and then asked Shangguan Ziqi to pick up Erbao.

Do the same thing.

The stone door opened another half a foot, but it was still too early to be fully opened.

Everyone looked solemn.

The adults were all worried, but the three children looked ignorant and curious.

When Sanbao's blood also flowed into the small hole, a miracle happened.

The entire stone gate was moved away.

I didn’t expect Sanbao’s blood to have such great power. Is it because she is a girl?

Yu Yuanzheng couldn't understand.

In short, once Sanbao's blood was absorbed, both sides of the stone gate moved all the way to the bottom before stopping.

But no one rushed in, but waited for the air to circulate for a while before going in.

Pine sap torches also consume some air.

It was almost time, and Elder Du took the lead and walked in front.

The three children were held in the arms of adults and could avoid danger in time.

Under the light of the torches, Yu Yuanzheng followed the prince step by step, holding his hand with Shangguan Ziqi.

"Husband, I feel like we are going downwards." Yu Yuanzheng felt that every step she took had a slight downward tendency.

"Yeah, I think so too."

Elder Du carefully checked for any mechanisms or hidden weapons along the way.

What’s strange is that I didn’t hear him mention where there was a trap on the rest of the way.

In other words, once you pass the Blood Gate, it means you are recognized?

Everyone followed silently. The passage was not wide, only enough for two people to walk side by side.

There are various patterns on the mountain walls on both sides.

They don't have time to study now.

We walked for about a quarter of an hour.

Suddenly, there was an open space ahead.

There are stone steps under your feet.

Just now, we were all marching in a single column, and only three torches were lit.

Now that the area is so wide, the torches can only illuminate a limited area.

The prince asked the other guards to light the torches in their hands.

Now everyone could see the scene clearly.

"Oh my God, so many cars." Yu Yuanzheng exclaimed.

All you can see are vehicles used on the battlefield.

Chariots, siege engines, catapults, ladders...

She recognized a few of them, but had never seen many of them before.

In order to take up less space, the vehicles are stacked up one by one.

And it hasn't rotted for so many years.

Yu Yuanzheng didn't know how the previous dynasty had preserved it.

However, there is no air circulation inside, so it is probably not easy for it to rot.

Yu Yuanzheng used the firelight to carefully look at one of the cars. The body of the car was shiny and glossy.

It turned out to be a thick layer of paint.

"Husband, could these be the treasures?" Yu Yuanzheng was a little disappointed when she saw a large group of cars.

"Let's look for it."

The prince was also a little disappointed when he saw so many cars.

If it is discovered before defeating Canglan, it will still be useful.

There is no war now, so these things are useless.

It was mostly used to arm the Wei army.

Besides, these things have been here for so many years, we have to try it to know whether they are still useful.

"Let's look around." The prince put away his slight disappointment.

Everyone did not go their separate ways, but gathered together so that in case of any danger, they could remind and help each other.

Yu Yuanzheng looked at this vast area and felt that it was not formed naturally.

"Husband, do you feel that this place seems to have been dug out by humans?"

"Yes, normally naturally formed caves cannot be so wide and neat. And you see, there are several pillars, which are to prevent the mountain from collapsing." Shangguan Ziqi explained, pointing to the large stone pillars at certain intervals.

Yu Yuanzheng saw that the stone pillars were not normal cylindrical shapes at all, but rather very random shapes. No wonder she didn't think of them as man-made at first.

They were all left randomly during the digging.

When they passed an area where cars were parked, they saw countless swords, guns, arrows, shields and other weapons commonly used in the army on the side of the mountain wall.

These are all things that will be used on the battlefield.

Nothing else.

Everyone was a little disappointed.

But keep checking.

Everyone held a hope that the previous dynasty would not have gone to such great lengths just to hide some vehicles and weapons.

There must be something they haven't discovered.

But because the light was from a torch, it couldn't reach far.

Elder Du walked in front and took everyone to look around the entire storage room.

"Your Highness, let's take a closer look at the surroundings." Shangguan Ziqi suggested.

"Yes, there should be a treasure room, and this is just one of them." Prince Jing immediately agreed.

"Yes, I think so too."

"Prince, I just noticed something strange in that location." The prince pointed in a direction.

They just passed by there.

"Grandfather, I also saw something there, like a light." Sanbao suddenly spoke.

The direction she pointed to was exactly the direction the prince mentioned.

Everyone walked in that direction again.

It was exactly where a group of big swords were placed.

"Sanbao, is the light you see the reflected light from the swords illuminated by the fire?" Yu Yuanzheng was a little suspicious that the child might have seen it wrong.

"No, mother, there really is light." Sanbao was very sure.

The prince looked at Sanbao and felt that sometimes children's feelings were more direct and sensitive.

"Move all these knives away and see what's underneath?" the prince decided.

Then everyone took action together.

There were only about a thousand knives piled up together, forming a mountain of knives. None of the knives had sheaths.

Excluding the three children, there were eighteen adults in total.

It took three-quarters of an hour to remove the knife.

Sure enough, I found the clue.

There is a round stone gate at the foot of the knife mountain.

This stone gate is also controlled by a mechanism.

Elder Du went forward to check.

This time he spent two quarters of an hour but still couldn't figure it out.

The prince saw that he didn't find anything.

He also stood on the stone gate and looked.

There is also a dragon carved on the stone gate.

There is a small gap in the middle, but I can't see where the mechanism is.

"Uncle Rong, our key has not been used until now. Could it be the key to open this door?" The prince also stood by and observed.

"The prince is right, it should be. Let's look for the keyhole." The prince looked around in the light of the fire.

"Your Highness, look there." Yu Yuanzheng suddenly spoke.

Everyone looked in the direction she pointed, and saw a relatively hidden small hole on the mountain wall not far from the stone gate.

Because the light couldn't get in, it seemed a little dark there.

Several people walked over, moved the torches closer, and looked through the small hole.

Sure enough, there were words at the bottom of the hole, and they were exactly the four words below the jade seal of the previous dynasty: The Mandate of Heaven.

The surrounding patterns are exactly the same as those on the jade seal.

The characters on the imperial seal are reversed, but these characters are correct.

The two are a perfect match.

The prince took out the jade seal from his arms.

Only then did Elder Du see clearly what the prince was holding.

"The imperial seal of the previous dynasty?"

"Does Elder Du know him?" the prince asked doubtfully.

"Your Highness, I have seen the map in an ancient book."

"Then have you seen the imperial seal of our Great Wei?" The prince narrowed his eyes.

"Your Highness, I have never seen it. I am just a man of the world, how could I have seen what the emperor has in his hand?" Elder Du immediately expressed his attitude.

The prince took the jade seal and gently placed it into the small hole.

Then press hard.

There was a "click" sound.

The circular stone door on the ground really moved slowly from the middle to both sides, revealing a deep cave entrance.