Suddenly, he was very surprised to find the long-awaited hundred-year-old Shangluo Castle, and Yu Xun, who was overjoyed, changed his calm style and rushed towards it in a hurry...... However, when he got closer and took a closer look, the situation in front of him was clear and made Yu Xun difficult......

It turned out that the castle of Shangluo had sunk into the ground because of the impact of a violent earthquake. Later, after hundreds of years of landform changes, the ancient castle that had sunk underground reappeared at the bottom of the valley.

Now, the part that is level with the ground where Yu Xun is standing at this time is the middle of the penultimate layer of the ancient castle (that is, the next floor of the highest floor), how can people get in like this?

There was no time to think about it so much at the moment, so Yu Xun had to perform light skills and jump up to the window of the highest floor of the ancient castle. With a gentle push of his hand, the two windows and doors opened. He sprang in, raised his eyes and looked around, but saw only a few tables and chairs in the room......

Yu Xun then walked down the stairs to the next floor, and although the rosewood staircase he could see had gone through hundreds of years of vicissitudes, it was still solid.

He walked down one floor after another, passing through four floors in total, and all he could see with the naked eye were ordinary household things, and there was nothing special about them. Yu Xun was unwilling to stop there, and went down to the fifth floor, which was the lowest level of the original castle.

There are a lot of things on this floor—a lot of cages are stacked haphazardly, and a lot of baggage is piled up on the ground...... I think it must have been the traces left by the sudden earthquake at that time, the owner of the castle was about to flee, and the people in the fort temporarily packed their luggage in a panic.

Yu Xun walked back and forth between the mountains of cages and baggage, and from time to time he started to pick up the remnants of those ancient castles. However, just as he inadvertently walked to a corner - he suddenly noticed that there seemed to be something strange about the ground under his feet!

So, he simply crouched down and tapped the ground there lightly with his knuckles—just by listening to the sound, it was obvious that the ground must have been hollowed out, then—maybe there was something extraordinary buried in there!

Yu Xun quickly found a piece of brick and carefully and slowly scraped off the old ash on the surface of the ground...... Gradually, a piece of antiquity was finally revealed!

The artifact was carved with some ancient motifs, and four other symbolic characters that were supposed to be from ancient times. As for what were the four words, he did not know any of them. After patiently removing the dust around the artifact little by little, Yu Xun finally excavated it intact!

Yu Xun vaguely recognized that this should be a beautiful box specially used to store documents. It seems that the box should be locked, but there is no trace of a lock installed on its surface......

For such a locked box with such a locked mechanism designed so secretly, Yu Xun really couldn't open it for a while!

Looking closely, this ancient box that was obviously deliberately hidden by someone is particularly hard, and it is heavy in the hand, which looks very thick and heavy. The surface of this ancient box looked very old because of its age, and it looked as if it was made of some kind of hardwood, but under the gentle tapping, it made the sound of gold and stone!

What kind of material it is made of is very difficult to discern for a while......

Faced with such an ancient box that looked extremely mysterious from the outside, Yu Xun felt that there should be quite unusual items kept in it, maybe it also carried some crucial mysterious information from ancient times! Therefore, he decided that it would be better to keep it for the time being-and wait until later, and then slowly find a way to crack the trick of opening it......

Since the bottom layer of the castle is buried deep in the ground, people can feel particularly stuffy if they stay too long. Yu Xun felt uncomfortable for a while at this time, so he decided to run upstairs first to breathe.

However, just as he hurried up to the top of the castle and was about to reach for a window and door, he suddenly noticed that there was also a face outside the window, leaning towards the window!

Yu Xun fixed his eyes and took a closer look--ha! It turned out to be the little macaque he had "acquainted" in the underground stone chamber! He was immediately very happy, so he gestured vigorously at it to let it come in quickly.

The little macaque "whoosh" and suddenly got in, and it also recognized Yu Xun as the person he was familiar with before, and it was very excited to call at him on the spot. Then the little macaque jumped up and down in the room, rummaging around for things......

This kind of behavior of the little macaque made Yu Xun feel that it could also be a good helper to help find things! So he took it with him and walked down to the bottom of the castle together......

As soon as he reached the bottom floor, the little macaque seemed even happier, and kept turning over here and there!

Yu Xun handed the ancient box to the little macaque to look at, and at the same time made a gesture to indicate that he wanted to find this kind of thing. The little macaque seemed to understand what he meant, and immediately searched all over the room......

After a while, the little macaque seemed to be particularly excited, and grabbed something in its paws and jumped towards Yu Xun.

Yu Xun took a closer look and found that the little macaque was holding a net bag made of gold wire—at first glance, he knew that it was a very valuable thing! But what was such a gold wire mesh bag used for?