The dazed sleep was woken up by a force. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info opened his eyes dimly, and Ziche saw that I woke up and didn't say anything and threw my clothes over.

I was awakened by the stern expressions of the three of them, took my clothes, bounced off the ground and stood in place for two seconds, seeing that Feng Xin and the others were all fully dressed, and were inspecting the equipment for final confirmation.

I was stunned and wanted to say what happened? They don't change their faces for no reason.

At this time, I heard the sound of gurgling water at the end of the cold spring, and I hurriedly put on my clothes and ran up to the spring to the bottom.

Most of the fire on the rock wall had been extinguished, and the entire space suddenly darkened, adding a little chill.

At this sight, my whole body froze. I don't know when the drainage outlet that was originally next to the Xuanwu actually closed automatically, and the obsidian hole cover that blocked the flow of water was engraved with a familiar pattern; The original pattern is outlined by the two human snakes and the two mermaids intertwined and then together.

But more importantly, water continued to gush out from several holes in the spring wall, and the water in the cold spring began to flow back, and there was a tendency to increase the amount of water.

The sub-cart came up and explained that the water had started pouring in not long ago, and they were awakened by the sound of water. Feng Xin deduced that the drainage hole was most likely really the inlet, and that the water storage mechanism would be reactivated every two hours after the water was drained. And that Xuanwu must be able to recognize people, and only certain people can enter and exit through that entrance.

I listened and immediately understood what was going on.

The scale of this entire Houyi tomb building is beyond imagination. So it's not a one-off mechanism, and you can't imagine that this cold spring is like a large flowing tank. There is a certain amount of time for the drain mechanism to open, and when the time is up, the drain cover will automatically fill up when it is closed.

Seeing that there was already some water at the bottom of the spring, it was not easy to find a switch in the cold water that was nearly ten meters deep and with very low visibility until the water level was getting higher.

No one wants to soak in the rancid cold water to find something, no wonder everyone else has a grimace.

I quickly thought about what came to mind, quickly folded back and picked up my backpack, fastened my shoelaces, and most of the stuff was collected by them, and I was only responsible for myself. He took a big sip of water on his head, spit out some of the blood clots that had crusted into his mouth, tightened them after dropping all his electronics into a waterproof bag, and shoved two Swiss knives into his trouser pockets.

Without further ado, we all slipped down.

At this point, the water under his feet was knee-high.

"We got out of this hole, right?" Qian Yan pointed to one place and looked at Feng Xin and asked, a pair of willow eyebrows entangled together.

Feng Xin nodded affirmatively.

Then she turned to the car and asked, "How long can this white snake extend, can you give an estimate?"

"It's hard to say, it can peek out of the water and go over ten meters." Ziche frowned and said honestly.

Qian Yan glanced around, his face sank, "Ten meters...... That's too big."

I understand Qian's intentions, indeed, if you can estimate the length of the white snake, plus the location of Qianyu's exit from the cave, you can calculate the approximate location where the mechanism can be launched. However, in terms of the length of the snake's body, with the basalt shell as the center point, drawing a circle outward, almost the entire cold spring will be covered, and the result is the same with and without speculation.

"It's too early to tell, look." Feng Xin saw Qian's thoughts and said, raised his chin and compared, "We were attacked as soon as we got out of the hole, and there were some unnatural depressions in the wall in addition to those artificial holes, which may have been the marks of the white snake in the process of the melee. Most of the bump marks are concentrated on the right half, which means that the probability of the switch is very high in this half, and we just need to find the bump point."

I thought about it and felt reasonable, and I couldn't help but admire Feng Xin's clear logic in his mind, and he could calmly observe and analyze in such a situation.

I then added my thoughts, "Hmm...... I think this switch must not be too close to the drain hole, otherwise the person who opens it will suck it up, right? It must have been after the water was drained before they went down."

Qian Yan bit her lower lip, nodded and closed her eyes, as if she was meditating on something, and muttered to herself. I saw her jump out of the hole, simulate walking a few laps back and forth on the side, and suddenly stopped at a point and said, "I guess there is nothing wrong around here."

Seeing that the scope of exploration had narrowed, we seized the time and climbed up and down to reach into the hollows of the mud wall and touch them randomly.

For a moment, "There is!" Ziche shouted vigorously.

He seemed to feel something in the muddy wall, and he held his hands on the wall, pressing the weight of his upper body into the depression, as if he was being sucked into the mud.

At this moment, the flowing water that originally gushed out from the surrounding springs plummeted in an instant, and not far away there were bursts of bubbles of air coming out of the bottom of the waves, and the pitch-black muddy water gradually flowed to one place, forming a small whirlpool next to the basalt shell.

It took five minutes for the spring to drain slowly, and it was mixed with the sediment around the drainage, exposing the rocks that had been built in the holes, and I found that there was really a lot of silt deposited at the bottom of the cold springs, and the drains should have been higher than the bottom, and the appearance was like a well, so that the old silt was buried high.

We looked closely and couldn't speak for a while, there was a hole in the drain, which was made of patches of rough stones of different shapes, and when we looked down along the main passage, there were several branches inserted in it, each of which was about as wide as a man squatting.

All in all, it is not a straight row, the bottom of the main row actually turned a corner, presenting an L-shape, according to the appearance of this branch looks a bit similar to the word Mao.

The sub-car took the searchlight to the bottom, and the light source was faintly hitting the bottom, not too deep, about three stories high. Qian Yi threw a metal claw hook with a mountaineering rope down, and after recovering it, it was determined that the depth was about 8.5 meters.

We watched from above for a while, and then we crouched down to take a closer look, and reached out to touch the rock in the mouth of the row. Suddenly, she looked up and said with an expression of amazement, "Although the stones on this wall are all rough stones, they have excellent water absorption, and they are excellent stones." She put her hand firmly on the wall, reached out to our eyes, and said, "Look! It's only been a few minutes, and it's all gone."

It can be seen that Qian Cai really loves rock climbing and stones, but a few rough stones with good water absorption can make her excited and excited, and her whole eyes show a different look

。

From the water drain, Dao Qiancai stretched out her hand to touch it, but it was only less than three minutes, but there was no dew in Qiancai's palm, and she observed it again and climbed down directly without saying a word.

The car then turned over, and Feng Xin called me to follow up with his eyes, and he was behind.

Each of these stone stones used to build the wall is the size of the palm, and you can know that these stones have been picked up as soon as you climb, and the slightly convex stone surface makes it easy for fingers to grasp and apply force to the end.

During the climb, I was amazed that the whole tunnel was quite dry as if there had never been any water flowing through it, except for some silt residues that told that water had passed through, there was basically not a trace of water on the stone surface. I can't help but think that this may also be the intention of the predecessors to pave this stone, with good water absorption and strong friction, and there is no need to bother to build any stairs, so the design is simple and easy to do.

I thought to myself, the people who built this mountain mausoleum had a high grasp of natural materials.

It didn't take a few minutes for us to drain the water to the end, and the bend that turned out was a stone crevice road with a height of more than three meters and only a width for one person, and even turned around a little reluctantly, and the overall shape was similar to the figurine road where the brother was found, and it felt like it was just a little smaller. Seeing this stone crack road, he was also more sure that Feng Xin's inference was not wrong, the water inlets of the branches above were for water, and the one with the highest ceiling at the bottom was for people to walk.

This stone road is built quite circuitous, not to mention a lot of uphill and downhill along the way, there are a few hairpin bends, and the walls on both sides of the front section also chiseled out a lot of waterway mouths, and the waterway mouths gradually disappear as you walk, so you can see that the spring water pumped away will not flow to the depths.

There was a strong wind blowing ahead, the air grinding against each other and hissing, and the sound of our footsteps.

Suddenly, the people in front of him stopped in a hurry, and Qian Cai and Ziche suddenly began to walk backwards, and the more they retreated, the more anxious they became, and Feng Xin and I were stuck behind and didn't know what was going on.

I only heard Ziche whisper in a sharp voice, "Retreat, retreat, find a place to hide!"