"Since it's an empty hall, should we go in and have a look?" Baili Chubby glanced at the hall with some curiosity.

"I'm afraid, we're going to have to go in."

An Qingyu moved the vermilion door in his hand, frowned and said, "This door seems to be locked from the outside, and it can't be opened at all from the inside." "

"Can't open it?"

Li Deyang glanced at the thin An Qingyu, walked to the door with some unbelief, pulled the door a few times, and found that it was indeed not moving, and couldn't help but say in confusion: "No, when I pushed the door just now, it was quite easy." "

Cao Yuan sighed, and slowly swept the light of the flashlight through the hall, "I can't open the door, so let's go in and have a look, and find other ways to get out." "

The four of them took a step, vigilantly observing the surroundings, and began to move towards the main hall little by little.

The front end of the hall was empty, and there was nothing but a few stout pillars, until it entered the center of the hall, and a gilded carved giant throne appeared.

This throne is at least thirty meters high, and with the carved back of the chair at the back, the overall height is almost more than seventy meters.

Baili Chubby looked at the giant throne in front of him little by little with the beam of the flashlight, and couldn't help but speak:

"This chair is too big, isn't it?"

"This is the seat of the ghosts and gods guarding this heavenly palace, it is normal for the ghosts and gods to be large, it is estimated that the chair of the Emperor Xudu is bigger than this." Cao Yuan opened his mouth to explain.

He turned his head and saw An Qingyu looking down, as if he was pondering something.

"What are you thinking?" Cao Yuan walked up to his side.

An Qingyu pushed his glasses, "Do you remember the blue-gray wall we saw when we came in?" "

"I remember."

"There's one thing I don't really understand." An Qingyu thought about it and spoke, "If this is the legendary Xudu, then why is there a wall built by the Han Dynasty outside of Xudu?" "

When Cao Yuan heard this, he couldn't help but be stunned.

"The existence of the capital must be older than that of the Han Dynasty, and since they built a wall outside, it means that someone in the Han Dynasty must have discovered the existence of the capital. At that time, if you want to build such a large city wall underground, it will consume a lot of manpower and materials, and the most important thing is that such a large project has not left any traces in the history books......

An Qingyu shook his head, "I don't understand, why are they doing this." "

Cao Yuan pondered for a moment, "Could it be that some emperor made some kind of contract with Yu Du in order to pursue eternal life?" "

"It's possible, but if that's the case, why build a wall?" An Qingyu asked suspiciously, "If the emperor wants to ask for immortality, shouldn't he offer some tribute?" That kind of wall was built there, like a ...... I'm afraid that something will run out of the capital. "

"Run out......" Cao Yuan pondered for a moment, "could it be some kind of 'mystery'?" No, no, the 'mystery' should have appeared after the fog fell a hundred years ago, and the time is not right. "

When An Qingyu heard this, she raised her eyebrows, "Why do you think there is no 'mystery' before the fog falls?" "

"If there was a 'mystery' before the fog fell, and there was no night watchman, then Great Xia would have been in a mess long ago." Cao Yuan opened his mouth as a matter of course.

An Qingyu glanced at him meaningfully, "But before the fog falls...... We have God. "

Cao Yuan's whole person froze in place, and a look of shock appeared in his eyes, "Are you saying that the 'mystery' may have existed before the fog fell, and the reason why Great Xia did not fall into turmoil was because there were gods protecting him in secret?" "

An Qingyu nodded, "This is just my personal speculation, after all, there is no evidence that there was a 'mysterious' existence before the fog fell. "

Cao Yuan glanced at the huge seat and sighed.

"Anyway, there's something strange about that wall...... But for now, let's find a way to get out first. "

The four of them bypassed the seats and went directly down the side aisle to the back of the main hall, which was a much wider space, but there were more furnishings here than in the front hall.

A bed, a table, and a black bookshelf full of files, and in the corners there are even some burned out of antique incense.

"This is the bedroom?" Baili chubby fox opened his mouth suspiciously.

"…… It's called a dormitory. Cao Yuan rolled his eyes, "If I'm not mistaken, this should be the ghost and god dormitory that guards this heavenly palace." "

"Will God sleep too?"

"……"

Cao Yuan directly ignored Baili's fat question, and silently stepped forward to observe it with a flashlight.

Although these furnishings look very ordinary, but from the perspective of the gods, in the eyes of Cao Yuan and others, these pieces of furniture are behemoths, especially the bed, which is almost the size of two football fields, and I don't know how long it will take to search this room.

Baili Chubby was still thinking seriously about whether the gods wanted to sleep or not, and An Qingyu had already walked under the bookshelf and swept the names of those files one by one with a flashlight.

Suddenly, his gaze stopped on a dossier.

A few threads shot out of his palm, staggering at the edge of the dossier, and with a single tug, he removed it from the upper floors of the shelf.

"What is this?" Li Deyang walked over suspiciously.

An Qingyu spread the file on the ground, his eyes quickly swept over the words on it, and he was slightly stunned.

He looked up at Cao Yuan, who was also walking over, and slowly spoke:

"I think I understand how that wall came about......"

……

Lin Qiye dodged the paper men along the way, and quickly moved in the direction where the voice came just now.

Fortunately, Baili Chubby and others have attracted most of the paper people, and the journey is also smooth, except for the cold wind blowing around, there is nothing else unusual.

Although Lin Qiye couldn't see them, after communicating with the owner of the mansion just now, he could already guess that these cold winds that blew from time to time were actually some ghosts that he couldn't see.

Soon, he saw the chubby collapsed house for hundreds of miles, which was also the direction from which the sound came from just now, but now the place was empty.

"In which direction did they go?" Lin Qiye frowned slightly, glanced at the route he came, and his gaze followed the road under his feet, extending into the distance......

There, black palaces stand majestically.

Is it a palace left behind by the ghosts and gods?

Lin Qiye only hesitated for a moment, and then walked towards the palaces that were standing, judging from the route, Baili Fat and the others must have entered one of the palaces.