summer market

The line is quiet.In addition to the messy and light footsteps, Gu Fengchun also heard the slightly heavy breathing of the crowd.The team had advanced for about three or four miles. Along the way, Gu Fengchun did not give up his observation of the surrounding environment.

After circling up from the underwater stairway, Gu Fengchun discovered that this karst cave was actually developed artificially, but due to geological evolution, it gradually evolved into a large karst cave.As the advancement deepened, the surrounding space changed from large to small.However, Gu Fengchun believed very much that the distance he had traveled so far was actually very little, and he was far from reaching the end.Gu Fengchun didn't speculate for no reason, but he understood that the karst cave was actually under the bronze temple, and the top of the temple was already made of bronze. Naturally, such a secret place below would not be very rough.The reason why it is so rough here is probably because this is not the point, and the point is still far away.

"Feng Chun, there seems to be something wrong!" Xiao Zhonghua deliberately walked side by side with him in order to protect his safety.

"How to say?" Gu Fengchun respected Xiao Zhonghua very much.He also paid great attention to what he said.

"I feel that my breathing is not smooth. I don't know if everyone is the same as me." Xiao Zhonghua said.At this time, everyone's masks have been taken off, and the air quality in the cave is good, so there is not much oxygen left in order to save.

When Gu Fengchun heard this, he immediately became vigilant.It is reasonable to say that there is poisonous gas in this cave.Not to mention anything else, the stalactites alone are calcium carbonate, which contains a lot of carbon dioxide. If there is no large amount of carbon dioxide in it, then the possibility of forming stalactites is not very high.

Gu Fengchun looked around, everyone said that there were signs of depression.Only he didn't feel anything wrong.

"Everyone buckle up the mask, while filtering the air, while using the oxygen supply inside as the consumption of breathing." Gu Fengchun dare not be sloppy in this matter.

"Oxygen is running out." Tang Maiqiu said with embarrassment.He is not very different from Xiao Zhonghua and others. Xiao Zhonghua and others have taken the elixir. The body is anti-oxidant, so naturally the oxygen needed is not much, but Tang Maiqiu is a very normal person, and the amount of exercise along the way is It is very intense, so the oxygen consumed is much higher than that of ordinary people.There is more than one Tang Maiqiu, and so is Nelson.Surprisingly, Shark and Soren Gyatso didn't feel this way.However, Gu Fengchun also knows that the mermaids are originally aquariums, and they can breathe naturally in the water, and Soren Gyatso has lived in the hypoxic place on the plateau for generations, and the oxygen content is low. For him, he still has the ability to adapt .

Tang Maiqiu's words made Gu Fengchun very difficult.When Tang Maiqiu said this, he knew that this was not an isolated phenomenon, but a crisis faced by the whole.Gu Fengchun glanced at Luo Xiaodan, only to see that Luo Xiaodan's face was slightly pale.However, Luo Xiaodan seemed to have a corresponding solution. She looked at Gu Fengchun and said, "Just now I also felt a little stuffy, but I put a little Xuezhi in my mouth, and the stuffy feeling disappeared."

Gu Fengchun was stunned for a moment, he never thought of replacing air with food.This should be just Luo Xiaodan's way of coaxing him.This can only show that Luo Xiaodan's situation is even more pessimistic.

"Everyone, speed up!" Gu Fengchun said with a serious face. "This area is the most lengthy and calm, so silt is easy to gather. As long as we pass here, there should be a vent!" Gu Fengchun had to draw a big pancake for everyone.At this time, there is no possibility to go back, and there is only one way to go to the dark.He only hoped that Chen Si would wake up early and give him an idea.Only then did Gu Fengchun realize how difficult it is to be the decision-maker of the team.

After listening to his words, everyone believed it.You know, the map of the entire temple was drawn by him.So no one would doubt his words.Even if he doubted it, he didn't dare to say it in person, because everyone knew that there was no room for retreat except to move forward.

"Old Tang, how long can your oxygen supply last?" Gu Fengchun asked solemnly.

"About half an hour. But with the air filtered by the filter membrane, it can last at least two hours."

"What about you? Xiao Dan." Gu Fengchun looked at Luo Xiaodan.Luo Xiaodan said: "Three hours is no problem."

Hearing what the two said, Gu Fengchun felt a little relieved, and said, "At our current speed, one hour is enough to find a new passage and air outlet."

"God, I can last up to an hour." Nelson said painfully seeing that Gu Fengchun had forgotten him.He has a large body, requires a large amount of food, and has an equally large need for oxygen.

"Take a bite of Xuezhi, and bite it in your mouth." Gu Fengchun suddenly remembered Luo Xiaodan's words, and said to Nelson.

Nelson rolled his eyes. He is from the most technologically advanced country in the United States. He has received systematic science education since he was a child. He has never heard that eating can supplement the body's demand for oxygen.But Gu Fengchun was taken aback when he finished speaking jokingly.

"Xiao Dan, is what you said true?" Gu Fengchun said solemnly, as if he had discovered something.

"Yeah, you think I can't lie to you?" Luo Xiaodan frowned.

Gu Fengchun didn't answer, took out a piece of Xuezhi from his bosom, and put it in his mouth.His mask had already been put on Chen Si's head.But along the way, everyone also discovered his weirdness. He was supported in the water for half an hour by relying on a tattered mask without oxygen supply, so it is not surprising that he is still safe and sound.

Chewing Xuezhi slowly, Gu Fengchun also felt that his panting and heartbeat slowed down a lot.He is very sensitive to his body, and he is aware of the changes in his body.

"I understand." Gu Fengchun said with a smile on his face; "This Xuezhi has anti-oxidation function, and it should replace the function of some oxygen in the human body." Thinking of this, he couldn't help thinking of another question, this Xuezhi Mushroom is so miraculous, could it be one of the prescriptions in the elixir?Because the greatest function of the elixir is to prolong the oxidation time of cells and to have a strong regenerative function, but this conjecture can only be known after Chen Si, who is familiar with the prescription, wakes up.

But his guess was right.This Xuezhi is indeed one of the countless wonder medicines in the immortal medicine.Chen Si searched for many years in Huijiang Snow Mountain before he found a little bit, so there are so many in this karst cave.If Chen Si saw the crowd, he would come here to eat, and he would scold them for eating peonies.

ps There will be another update later.