It's not your average sudden enlightenment.

A huge lake appeared in front of me, and around the lake, there was only a path about two meters wide.

This underground lake is octagonal! And the largest diameter should be a mile away.

The water is not clear, but it is sparkling and shiny!

After the two of them came in, the reason why they could see so clearly was because the lake water could glow!

The underground lake is tens of meters high from the rock wall at the top. At the top, there are also large and small stone ridges hanging upside down.

In the middle of the lake, there is a circular island in the middle of the lake, about 50 meters in diameter. In the middle of the island in the middle of the lake, there is a natural craggy stone pillar that connects to the top. In this way, the top looks like an umbrella cover, and the stone pillar is like an umbrella handle.

Yu Yao and Xiao Ying didn't speak for a long time.

"Here, it should be the bottom of Xianding Mountain!" Xiao Ying took a deep breath.

"This underground lake should be connected to the Jinsha River!" Yu Yao also took a deep breath.

"I'm afraid two hours is not enough to explore. Xiao Ying took out her mobile phone, but there was no signal.

Yu Yao thought for a while, "In this way, go out first, send a message to Lin Fengcao to explain the situation, and let him react to Liu Dali immediately." ”

"It's fine. Now that you're here, you have to find out. ”

The two returned the same way again, out of the cave, the mobile phone signal was indeed there, and after Yu Yao sent a message to Lin Fengcao, the two returned again.

After returning to the lake, the two first walked around.

This underground lake is supposed to be a natural formation. However, the edge of the lake, and the surrounding road, are apparently man-hewn and relatively clean, and the surrounding mountain walls are damp and covered with moss.

"It really shouldn't be a vault. Yu Yao said as he walked, "Let's just say that this entrance, it is difficult to carry large items from the wooden mouth, and this humid environment is not suitable for the preservation of treasures." ”

Xiao Ying nodded and looked at the top, "The yellow-backed oak forest above Xianding Mountain is like a flame, and there is a huge space below, it really looks a bit like a tripod." ”

"This place seems to have never been discovered, which means that before Xiao Zhangyan came in, there should have been a formation to protect it. ”

"Yes. Xiao Ying responded, "When he comes in, he will definitely break the formation, and when he leaves, he should not be able to restore the previous formation, and he doesn't want the entrance to be exposed, so he used a unique formation to close it again." ”

"Although it's not a secret place, Xiao Zhang's eyes may also leave clues!" Yu Yao looked at the island in the middle of the lake, "It's just that around this underground lake, we haven't found anything, and this island in the middle of the lake is not easy to go up." ”

"It's not that hard. Xiao Ying smiled, walked to a corner of the octagon, suddenly jumped up, stepped in the lake repeatedly, and in a blink of an eye he reached the middle of the lake, at this time he stood still and turned around, "You can pass." ”

Yu Yao was dumbfounded, only to see that Xiao Ying's feet were about ten centimeters immersed in the lake water, but his body was steady and his breath was smooth.

"Is this okay?" Yu Yao immediately smiled bitterly, "You can do it, I can't do it!"

"You can too. Xiao Ying returned to the lake again and pointed to the lake, "This octagonal lake must be expanded and repaired, and the edge is in the shape of the eight trigrams;

Yu Yao suddenly realized.

Subsequently, Yu Yao followed Xiao Ying and successfully performed the "Lingbo Microstep" and came to the island in the middle of the lake.

On this path, there is a stone platform about a dozen centimeters underwater, but because the lake water is not clear and glowing, it is difficult to see.

The stone platform connects the lake and the island in the middle of the lake under the water, and the width is uneven, about two meters wide at the point, and only a foot at the narrow point. It is thought that it should have been formed naturally, but it was later chiseled to form a dark platform underwater. The shape of the Bagua Lake and this dark platform complement each other when they are repaired.

The diameter of the island in the middle of the lake is about 50 meters, and the craggy stone pillar in the middle is about 10 meters in diameter. Around the stone pillar, it looks like a jade shape.

Surprisingly, the temperature on this island in the middle of the lake is significantly higher than on the lakeside. The two of them walked around for a while, and sweat appeared on their foreheads.

However, the island in the middle of the lake is not very large, so it is easy to see.

The island in the middle of the lake is relatively flat as a whole, with the stone pillar as the center, extending two arc-shaped stone ridges, so that the whole circular island in the center of the lake forms the "dividing line" of Taiji fish.

One Yuan, Two Instruments.

This underground lake was built into Bagua Lake, and this island in the middle of the lake was built into Taiji Island.

The "fish eyes" of the two Taiji fish are very easy to find, and they are also key locations, so Yu Yao and Xiao Ying looked at these two places first.

A "fisheye" is a raised circular stone platform, about one meter in diameter and half a meter in height. The surface of the stone platform is very smooth and looks like it was the result of years of meditation.

The other "fish's eye" is a circular stone pit with a diameter of about one meter and a depth of about half a meter.

Yu Yao and Xiao Ying looked in front of this round pit, and there were actually a lot of things in it!

There is a bundle of bamboo slips, but from the morphological point of view, many places have been crispy, I am afraid that I can't touch it, and I have to turn it into powder when I touch it.

There are clay pots, pottery bowls, and clay pots, which are some daily necessities, and Yu Yao took a few glances and concluded that this is pottery from the late Shang Dynasty, simple and rude.

In addition, there is a relatively thick bronze square box. The box is not large, approximately square, and the side length is about 20 centimeters. This box has no lid and is open.

To be careful, Yu Yao put on gloves and took out this small bronze box.

Inside the box, there is a bone needle and a ball of thin thread, but they can't be touched, because like the bamboo slips, it is estimated that they will turn into ashes when touched.

In addition, there is a very small bronze mirror, which is about ten centimeters in diameter.

There is also a jade comb.

Yu Yao first picked up the jade comb, which was a typical shape from the late Shang Dynasty to the early Western Zhou Dynasty, with a narrow head and wide teeth like a relatively high trapezoid, and the teeth of the comb were relatively thick.

The comb head has a button-like structure. At the same time, one side is engraved with a simple anagram.

On the other side, there are three words engraved vertically!

This script is roughly between the oracle bone inscription and the gold inscription.

"Do you know?"

"Almost. Yu Yao looked at it, "I'll study it." ”

"Hmm. Xiao Ying answered, put on gloves, and picked up the bronze mirror.

The bronze mirror is covered with green rust, but the rust layer is thin and uniform, the mirror surface is free of lines at the speed of light, and the center of the back is a bow button, with three layers of ornamentation.

The innermost layer is divided into five zones by double parallel lines, the second layer is composed of eight raised runes, and the outermost layer is surrounded by individual wave-like water patterns.

Xiao Ying looked at the ornaments on the bronze mirror, couldn't help but be fascinated, took two steps and retreated, bowed his head for a while, looked at the surrounding environment for a while, and closed his eyes for a while.

At this time, Yu Yao was still staring at the three words on the jade comb.

"I see!"

A moment later, both looked at each other and spoke.