According to the size of the system backpack space is 1,000 cubic meters, the lung capacity of the adult human body is 2,500 milliliters, and the lung ventilation per minute is 5-6 liters, so if a system backpack space is filled with air, if it is supplied to ten people, it can last for ten minutes.

Because as the breathing progresses, the oxygen content in the space will get lower and lower, and when the time comes, Li Tong will take out the people in the system backpack, let alone fight, it is simply a deliberate head!

So after Li Tong calculated again, he thought it was best to fit three people in a system backpack!

This way, the people inside will be able to hold on for thirty minutes and have plenty of time to prepare.

Li Tong told the little emperor about the results of his calculations, but Xue Yundao didn't understand, and said directly: "You just put me in, and then experiment it, won't you?" ”

Li Tong said: "It's light to say, if you don't do it, you'll die!" ”

Xue Yundao patted his chest and said, "It's okay! I'm hard! ”

Xue Song and the Little Emperor insisted on disagreeing, and in the end, the Little Emperor won, Li Tong proposed to find a death row prisoner to complete this glorious mission, and everyone present immediately raised their hands in approval.

The impermeable bag they found was actually a urine bubble, a sheep's pig's and a cow's urine bubble!

Also, in this era when there are no plastic bags, it is not easy to find airtight things.

So Li Tong took the urine bubbles filled with air one by one, and then put them in the system backpack, but the urine bubbles were still put in, and someone still needed to untie them inside to release the air inside.

The death row prisoner ordered by the little emperor came, and the little emperor said to the death row prisoner in a serious tone: "Wang Bao, now I will give you another chance to serve the country, are you willing?" ”

This prisoner is none other than Lord Wang, who has always been a mortal enemy of Han Jin, and after Wei Xian's rebellion, he immediately changed his camp very spinelessly and supported Wei Xian instead, which led to many ministers who still supported the little emperor in the first place to finally recognize Wei Xian's status.

Wang Bao knelt down excitedly and shouted, "Thank you, Your Majesty!" The old minister will never give up! ”

"Here's how it works, you'll go to a strange place later, and you just hold your breath when you go in, and then untie the rope with the urine bubbles inside." The little emperor explained.

Wang Bao hesitated, things sound weird! You won't really let yourself die, will you? I'm just talking!

"What? You don't want to? The little emperor's voice was suddenly full of majesty.

Wang Bao knelt on the ground, originally wanted to hug the little emperor's thighs, but was embarrassed to find that the little emperor was too small, and he could only crawl forward if he wanted to hug his thighs!

"If this succeeds, I will pardon your capital crimes!" The little emperor tempted.

Wang Bao weighed again and again, pretending to be righteous and awe-inspiring: "For Your Majesty!" There is nothing to be afraid of death! ”

Li Tong squatted down and patted Wang Bao's shoulder, and said, "Lord Wang, don't be nervous, take a deep breath first." ”

Wang Bao looked at Li Tong who enlightened him gratefully, thinking that there was still someone willing to help him.

Wang Bao took a deep breath according to Li Tong's instructions, and saw Li Tong's strange smile, and as soon as his eyes went dark, he entered another world.

Looking around, it was a world without sun candles, but full of light, with pairs of urine bubbles on the ground.

Because of nervousness, Wang Bao opened his mouth to shout for help, the air in his lungs ran out directly, Wang Bao breathed again, and found that it was difficult to breathe, Wang Bao remembered the previous instructions of the little emperor, squatted on the ground and untied a urine bubble.

The feeling of dizziness became more and more serious, coupled with old age and frailty, Wang Bao passed out.

If Li Tong hadn't released him, it is estimated that Wang Bao would be like that dead chicken.

Li Tong frowned and said, "It doesn't seem to be going well!" Unfortunately, I couldn't see what was going on inside, and now I had to wait for him to wake up. ”

Xue Yundao said anxiously: "No, let me come!" He's all right as an old man, and I'm even more fine! ”

Xue Song said: "Let me come!" In case of any accidents, uncle, you still have to preside over the military of Zhao State, and without me, it will not affect the overall situation. ”

The little emperor asked, "Li Tong, are you not familiar with your own things at all?" ”

Li Tong smiled bitterly: "If we knew, we wouldn't have to worry so much now." ”

The little emperor asked again, "Can you go in yourself?" ”

I'll go, what kind of brain hole is this little emperor!

Li Tong said: "I'll try!" ”

Xue Yundao stretched out his hand to stop Li Tong, but Li Tong took a deep breath and had already entered.

Li Tong looked at the backpack space curiously, this was his first time here, Li Tong stretched out his hand and walked a few steps forward, and he encountered an invisible barrier, and finally Li Tong touched the barrier and took a punch, and Li Tong had a bold guess.

Li Tong untied a few urine bubbles on the ground, and finally couldn't hold it back, Li Tong had a whim, and directly aimed his mouth at a urine bubble, wanting to directly inhale the air inside, but a bad smell rushed straight to Li Tong's brain.

Li Tong hurriedly withdrew from the backpack space.

As soon as he came out of the backpack, Li Tong felt Xue Yundao's hand on his shoulder.

"Don't worry, let's go in together, so that we can take care of it." Xue Yundao's voice came.

Li Tong said speechlessly: "I've already gone in!" ”

The little emperor said: "What nonsense, haven't you been here all along? ”

Li Tong said curiously: "I have indeed gone in!" I spent four or five minutes in there! ”

The physical fitness of the inhabitants of this world is generally good, especially those who have practiced martial arts like Li Tong, and their physical fitness is even better, so they can't be measured by general standards, Li Tong just thought that in this way, a backpack space can put a few more people.

Xue Yundao still thought that Li Tong was joking, and said, "We all looked at you just now, and you never left at all." ”

Li Tong frowned, took a deep breath again, and then entered the backpack space, Li Tong untied a few urine bubbles again, and when he couldn't hold it back in the end, Li Tong forcibly took a few breaths of gas in the backpack space, a smell of urine bubbles!

The moment Li Tong came out of the backpack space again, he carefully observed that Xue Yundao and the three of them still had the same expressions as when he went in just now!

It was as if time had paused in that moment.

Li Tong raised his hand and said, "I went in again just now, do you know?" ”

The little emperor shook his head.

It seems that this is really the case, after he entered the space backpack, he was completely out of time, but why was it okay for Wang Bao to go in just now?