Li Tianyi walked into a square building, touched the stone wall with his hand, and wondered in his heart, 'Is this a cement structure?? or a natural stone?' At this time, Li Tianyi felt that the building materials here were very strong. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

This square building is not big, after Li Tianyi walked in, he calculated in his heart that the entire building was ten meters in circumference, and in addition to some aquatic plants, there were occasionally some fish passing through it.

After a while, Li Tianyi swam out of the square building, feeling more and more disappointed, "There should be no ancient civilization here." ’

On the other side, Li Ruoshui circled around the stone pillar and said, "Xinxin, you say, is this stone pillar a natural stone?"

"Is it possible? This stone pillar is more than ten meters high, if you want to polish such a high stone pillar, you need at least twenty cubic meters of large stones, think about it, how heavy is such a big stone?" Zhou Xinxin said.

"Yes, twenty cubic meters of stones, even if you use a big crane to lift, it is also very laborious, this ancient city is more than 2,000 years ago, you say, did the ancients have a crane 2,000 years ago?"

"Perhaps, they have another way. Zhou Xinxin said, "Like the pyramids and the Great Wall, they are all large-scale buildings, which the ancients could build, and if you have that ability, it is not difficult to build this ancient city." ”

When the two girls spoke, they would look at Li Tianyi from time to time, and after the two saw Li Tianyi coming out of the square building, they swam towards Li Tianyi together.

Li Ruoshui swam to Li Tianyi's side and asked, "Did you find anything?"

"There was nothing in it. "Li Tianyi.

"This ancient city is more than 2,000 years old, and even if there is anything, it has been corrupted by time. Li Ruoshui said.

Li Tian nodded and said, "Let's go to Wu Jun and them to have a look, perhaps, they have found something." ”

"Okay!" The two women nodded, and swam to Wu Jun's side with Li Tianyi.

After Li Tianyi, Li Ruoshui, and Zhou Xinxin swam to Wu Jun's location, they did not see Wu Jun and other soldiers, only a few scientists.

Li Ruoshui said, "Professor Qian, where did Captain Wu go?"

Professor Qian pointed to the canyon in front of him and said, "They entered through that canyon." ”

Zhou Xinxin looked at the deep canyon and saw that it was extremely dark, and occasionally, strings of bubbles emerged from the canyon, which looked a little scary.

Li Tianyi was a little curious about this canyon and said, "I'll go in and have a look." ”

"Li Tianyi, according to the detection, there is a dark river in it. Professor Qian said.

Li Tianyi knew that there was no river around the Red Heart Lake, but the water of the Red Heart Lake was not stagnant, because there were many dark rivers under the Red Heart Lake, and if you recklessly walked into the dark river, you would encounter unknown dangers.

However, Li Tianyi was bold, and he was not afraid in his heart, so he said lightly, "I'll go in and have a look, and if I encounter a problem, I'll come out immediately." ”

"Well, you stay safe. Professor Qian said, he thought, 'Captain Wu and the others have gone in, and they are not in danger, so there should be no problem.' ’

Li Ruoshui glanced at the canyon and said, "I want to go and see it too." ”

Zhou Xinxin was a little scared, but she was a little curious, so she said, "Let's go together." ”

Li Tianyi checked the diving equipment, the oxygen in it was sufficient, and then swam towards the canyon, Li Ruoshui and Zhou Xinxin followed behind Li Tianyi.

After the three of them swam for about ten minutes, they finally crossed the canyon, Li Tianyi suddenly stopped, pointed to the front and said, "There is a whirlpool in front, be careful." ”

Li Ruoshui and Zhou Xinxin were suspended beside Li Tianyi, and the two looked ahead, but the light here was extremely low, and the visibility was only a few meters, which was still with the help of lights, if there were no lights, it would be dark in front of them.

Li Ruoshui probed with a detector and said, "This place is very large, with a radius of fifty meters. ”

"What a strange place. Zhou Xinxin said, adjusted the direction of the light, looked up, and after a while, said, "If water, you say, we go straight upstream, can we return to the water?"

"It shouldn't be possible. "Li Tianyi.

"I don't know, it's too dark here, and besides, we're more than 200 meters above the ground. Li Ruoshui said, she knew in her heart that if it weren't for the good diving equipment, they wouldn't have been able to dive so deep.

Zhou Xinxin's light kept shining above, and at the same time, he said, "If the water, let's swim up and see if we can return to the water." ”

"Hmm. Li Ruoshui agreed.

Li Tianyi, "Let's be careful, the whirlpool here is very strange, if you are accidentally involved in it, you may be swept into the underground dark river." ”

"Well, be careful, everybody. Li Ruoshui said.

Li Tianyi took the lead upstream, Li Ruoshui and Zhou Xinxin followed him, and after a few minutes, Li Ruoshui received a message from Wu Jun, "Where are you?"

"Captain Wu, where are you?" asked Li Ruoshui.

"We found an ancient city in the underground river. Wu Jun said.

"In which direction?" asked Li Ruoshui with some excitement.

"Now, it's hard to say, we seem to be lost. Wu Jundao, if it weren't for the good communication equipment, at this time, he would no longer be able to contact the outside world.

Li Ruoshui said, "I'm with Li Tianyi and Zhou Xinxin, and now, we are in the canyon you just entered. ”

"Have you entered the canyon?" Wu Jun was a little excited when he spoke.

"Well, we're trying to go upstream. Li Ruoshui said.

"Don't try, there's only one passage in that canyon that leads to the outside, and if you go upstream, you'll hit a rock wall. Wu Jun said.

"This?" Li Ruoshui thought for a while and said, "Then we'll come to you." ”

"We have been swept into the dark river by the undercurrent, and we can't tell the direction anymore. Wu Jun said, "You swim out of the canyon as soon as possible, and then, bring a rope in." ”

"Okay!" Li Ruoshui said, and then asked, "Haven't you encountered any danger?"

"There's no danger here, and there's no water where we're located. Wu Jun said.

"Alright, let's get in touch with the outside world, and then we'll come back to you. Li Ruoshui said.

"Well, you must pay attention to the undercurrents, there are so many dark rivers under this ground that if you are not careful, you will be swept away. Wu Jun said.

After Li Ruoshui ended the call, he said to Li Tianyi and Zhou Xinxin, "Captain Wu, they are lost, let's go out first." ”

"Okay!" Li Tianyi, but after he finished speaking, he said depressedly, "We seem to be lost too." ”

"How is it possible, we have a positioning system. Zhou Xinxin said, she said, immediately checked the positioning system, only to find that the positioning system failed, and suddenly said, "No wonder Captain Wu will get lost." ”

"What now?" Li Ruoshui looked at Li Tianyi as he spoke.

"We swim to the bottom and then we look at the current to find our way. "Li Tianyi.

"That's all there is to it. Li Ruoshui said.

"If it's water, how can the positioning system fail? Zhou Xinxin said.

"Perhaps, there's a strange force field here. Li Ruoshui said.

After Li Tianyi, Li Ruoshui, and Zhou Xinxin swam to the bottom of the water, they said, "The water of Hongxin Lake flows from the canyon to our location, and then flows into the dark river, as long as we go against the current, we can return to the canyon, and then return to Hongxin Lake." ”

"Well, let's go. Li Ruoshui said a word and began to move against the current, of course, the water flow at the bottom of the lake is very slow, and only a detector can detect it.

Zhou Xinxin swam for a while, felt that the atmosphere was a little dull, and said, "Ruoshui, you say, will there be monsters at the bottom of this lake?" ”

"How is it possible, there are at most a few big fish here. Li Ruoshui said, as soon as she finished speaking, a two-meter-long fish swam past her, and Zhou Xinxin also saw this big fish and exclaimed, "This fish is so big, I don't know what kind of fish it is." ”

Li Tianyi had been paying attention to the whirlpool around him, and at the same time he was also paying attention to the detector, and suddenly, he felt a strange whirlpool, and said nervously, "You guys be careful, it seems that there is a whirlpool rolling towards us." ”

"Hmm!" Zhou Xinxin replied, and said, "Let's swim faster, there are too many whirlpools here." ”

"It's because there are so many whirlpools that we can't swim fast at all. Li Ruoshui said.

Li Tianyi shouted, "Let's hold hands, quickly." ”

When Li Ruoshui and Zhou Xinxin heard this, they immediately took Li Tianyi's hand, and then, Zhou Xinxin asked, "Is there any problem?" However, before Li Tianyi could speak, the three of them were swept away by a powerful whirlpool, as if they were swept up by a tornado.

"What the hell, such a strong current. Zhou Xinxin said depressedly.

Li Ruoshui grabbed Li Tianyi's hand tightly and said, "Xinxin, don't move." ”

"I just want to move, but I can't, the current is too fast. Zhou Xinxin said.

"I don't know where we're going to go. Li Tianyi, at the same time, looked around with both eyes, but the surroundings were too dark, and there was nothing else except the flow of water.

I don't know how long it took, Li Ruoshui felt a little dizzy, and the water flow slowed down a little, Li Tianyi tried to swim, and at this time, he was able to swim, but the water was still very fast, and he could only swim along the current.

"Bump!" Zhou Xinxin felt that she had been hit, and said with some pain, "How can there be a wall here?"

Li Tianyi adjusted the lighting, glanced around, and said, "It's a bit like a passage here." ”

"Dark River?" Li Ruoshui said with a bitter face, she didn't expect that she was really swept into the dark river.

"It's supposed to be the Dark River. "Li Tianyi.

"What now?" Zhou Xinxin asked, and also tried to swim, she, like Li Tianyi, could only swim along the current.

Li Ruoshui said helplessly, "It seems that we, like Captain Wu, are lost." ”

"From the current situation, we have to find another way out, the current here is too fast, and we can't swim back against the current. "Li Tianyi.

"I hope there's an exit ahead. Li Ruoshui said.

The three of them went down the river, and after ten or so minutes, Li Tian said, "The water here seems to have become more rapid." ”

"What the hell is this place?" Zhou Xinxin said depressedly.

Li Ruoshui's heart tightened, and said, "Li Tianyi, you said, there won't be a waterfall in front of you, right?"

"Waterfall?" Li Tianyi frowned and said, "There is also a waterfall in the underground dark river?"

"Absolutely. Zhou Xinxin said.

"If it's really a waterfall, I hope this waterfall is not high, otherwise it will ......" Li Tianyi didn't continue, but everyone knew in their hearts that if the waterfall was too high, it would depend on the will of God whether they could survive or not.