In ancient times, it took a staggering amount of manpower to carve out such an underground tunnel.

It can be said that the manpower spent on building this underground space is equivalent to the Great Wall built by Qin Shi Huang, and in terms of workmanship, it is even more elaborate than the Great Wall of Qin, and the underground tunnel built around the underground river is only a part of the entire space.

Having said all this, in fact, we still haven't stepped out of the scope of the Crystal Cave of Time.

According to Zuo Tianmei, as long as we are still underground, it means that we have not left the Crystal Cave of Time.

With the technology of the ancients, to build such a huge underground labyrinth, I am afraid it will take thousands of years of accumulation, it seems that it seems to be recorded in the legend, when the Queen Mother of the West in order to build the ancient Yao Pond, unified the West Kunlun region, captured all the natives of the West Kunlun to the capital of the emperor as slaves, and worked day and night to dig the Crystal of Time, so that the current scale of the Crystal Cave of Time was born.

Not long after, there was a loud sound of running water in front of the underground river.

The sound of flowing water sounded very intense from afar, not like the gentle sound of the underground river in front of us, and when we got closer, we found that a huge waterfall appeared at the end of the underground river, as if a huge white curtain fifty meters wide hung in front of us.

A curtain of white water poured down from overhead, and a cliff with a height of at least two hundred meters appeared in front of us.

I never imagined that at the end of this underground river would be a cliff waterfall.

Now, the only hope in our hearts is shattered, such a cliff and waterfall stop in front of us, unless we have wings to climb up, otherwise, it is impossible to climb up the smooth cliff of 90 degrees by our own strength.

Turning my head, I looked at Zuo Tianmei, who was holding a flashlight.

Zuo Tianmei stood by the river bank in front of the cliff waterfall, standing in front of the waterfall in a daze, and did not speak for a while.

I took a step forward and was about to say a few words of comfort to her, only to hear Zuo Tianmei suddenly stretch out her hand and point at the cliff waterfall in front of me: "Senior brother! You see! There seemed to be a cave in the curtain of water in the cliff waterfall. ”

When I heard him say this, I was shocked, and I came back to my senses and followed the direction of her finger towards the waterfall in front of me.

Sure enough, there is a cave isolated by a white curtain of water near the cliff waterfall.

This cave is inconspicuous, isolated by a white curtain of water, if it weren't for Zuo Tianmei's delicate observation, we really couldn't see it for a while.

When I came back to my senses, I couldn't help clapping my hands, and said excitedly: "I didn't expect that I had to rely on my senior sister at the critical moment, it was really natural for the boat to go straight to the bridge, and there must be a road before the car reached the mountain!" I have a strong premonition that the cave inside the water curtain must be able to lead us to escape in the end. ”

At this time, Zuo Tianmei and I teased a few words, cheered up again, stepped on the knee-high river water, and slowly flowed towards the water curtain hole of the cliff waterfall.

The two of us also crossed the river by feeling the stones, and walked all the way along the bank of the tunnel next to this underground river, and I didn't know how deep this underground river was, and this time I hadn't walked out of half a meter just now, and the water had reached my neck.

At this moment, I saw Zuo Tianmei holding a flashlight in her mouth, facing the turbulent water that washed down from the cliff, like a small loach swimming towards the water curtain cave.

The force of the water rushing down from the top of my head was too great, and I didn't get close to the position of the water curtain hole several times in a row, after Zuo Tianmei climbed up the water curtain hole at this time, I didn't know where to get a nylon rope and threw it towards me, I grabbed the rope, and the two of them pulled back at the other end of the rope, which pulled me into the water curtain.

After the two of us sat near the entrance of the cave and took a breath, we were attracted by the huge passage in the cave, what secrets did this cave contain?

We all became curious about this cave, and even though there was a dark and mysterious world in front of us, it couldn't stop us.

However, we are not reckless people along the way, although our curiosity is very heavy, but we are all very vigilant.

I held the corpse bell in my hand, and Zuo Tianmei held the life-breaking pipa in my hand, and we carefully and slowly groped our way to the depths of the cave, keeping a close distance while observing around, to prevent us from getting separated in the dark.

The light of the flashlight has obviously weakened a lot at this time due to the exhaustion of electricity, and the high-intensity flashlight that can irradiate a distance of seven or eight meters can only shine at a distance of five or six meters at this time.

It was dark overhead, and I don't know how high this cave was, but the width of the tunnel was close to ten meters, enough for the two of us to walk side by side.

In this way, we walked forward about fifty meters, and suddenly Zuo Tianmei next to us squatted down, bent down and dipped her hand in a little debris on the ground, a shiny crystal, and at a glance I knew that this was the crumb of the crystal of time.

Zuo Tianmei pinched the debris in her hand slightly, and muttered, "If you didn't guess wrong, this place may have been a time crystal vein before!" In my opinion, there is a huge time crystal vein in front of this! Among the five elements, gold gives birth to water! At the end of the Crystal Mine of Time is the water vein, which is in line with the feng shui easy number. ”

However, although Zuo Tianmei said this, in fact, we are not interested in whether there is a time crystal in this cave at all, when a person dies for a lifetime, after experiencing a bloody storm, you will find that money is not important, and it is better to live than anything else.

After such a small episode, we walked forward another 100 meters, seeing that this road is getting wider and wider, as if it is the shape of a bell, and when I look forward again with the light in Zuo Tianmei's hand, my footsteps stopped abruptly, and I was suddenly stunned by the scene in front of me.

In front of me, there stood nine pillars of time crystal crystals the thickness of buckets that emitted dark red light.

These nine crystalline pillars of time point to the sky and the earth, and you can't see the end at a glance, let alone how high they are.

The glow of the flashlight shone on the nine huge pillars of time crystals at the end of the cave, and the dark red light was so dazzling that it was no wonder that I noticed it all at once.

I glanced down at the base of the Crystal Pillar of Time a few more times. On the ground at the bottom of the Crystal Pillar of Time, there are scattered corpses with decaying bones, the bones are messy, and the traces of swords and slashing on the surface should have been a fierce battle for the Crystal of Time here a long time ago.