The hanging basket kept swaying in the strange wind, and Li Jie and several people were also frightened and pale, especially Yuan Jianzheng, who was almost fainting at this time, but fortunately, Li Jie had already designed a safety rope to fix several people in the hanging basket, even if they turned out, they could be pulled back.

Finally waited until the strange wind passed, and Li Jie and the others also showed expressions for the rest of their lives, Ma Hama gasped a few times, and finally asked in a dry voice: "Let's ...... Do you want to continue? ”

Ma Hama was really afraid, he had grown so big, it was the first time he was so close to death, even if he had a safety rope tied to his body, but he was also worried that if he was really thrown out, he was afraid that he would be thrown into the mud.

"I'm not reconciled, we've already risen so high, maybe it's not far from the moon, and we may be there if we work harder!" Guo Zhenglin has a huge obsession with the moon, but unfortunately he doesn't know, even if they run out of fuel, don't think about the moon.

Ma Hama and Guo Zhenglin disagreed, and they couldn't call the shots, so the two of them also looked at Li Jie at this time, only to see Li Jie was silent for a moment, and finally suddenly raised his head and said: "Have you forgotten our original intention of flying into the sky, the current height can only see the arc of the earth, if you want to see the earth like a ball, you must increase the height!" ”

"Good! I knew Brother Li wouldn't let me down? Guo Zhenglin was overjoyed when he heard this, as the so-called Chaowen Dao, Xi Ke died, when he asked Zhu Yuanzhang to get on the hot air balloon, he had already put life and death out of the way.

"Enough! That's enough! I believe that the earth is like a ball, Li Sizhi you have won, let's go down! Yuan Jianzheng couldn't hold on any longer, screaming and admitting defeat, he really couldn't stand the fear brought by the sky, and the arc of the earth was becoming more and more obvious, no matter how much he denied it, he couldn't change this evidence.

Seeing Yuan Jian admit defeat, Li Jie was also happy in his heart, the reason why he deliberately said that he wanted to continue to improve just now was actually to see that Yuan Jian was afraid, so he used a strategy to capture and indulge, and now it finally has an effect.

"Yuan Jian is wrong to say this, in order to pursue the truth between heaven and earth, we have worked hard every day to observe, record, calculate, and think about the mysteries of this heaven and earth day and night, and now we have this opportunity to witness with our own eyes, how can we give up easily?" Guo Zhenglin objected loudly.

As soon as Guo Zhenglin's words came out, Ma Hama, who had already retreated, suddenly cheered up, and then praised and said: "Brother Guo is reasonable, as the so-called reading thousands of books, it is better to travel thousands of miles, flying to the sky today, far better than many people in their lifetime, if you can't see the earth like a ball with your own eyes, I am unwilling!" ”

Worst! Li Jie secretly screamed in his heart that it was not good, he originally wanted to go down by admitting defeat through Yuan Jianzheng, after all, he might encounter many unpredictable dangers if he went up, and he didn't want to really dedicate himself to science, but he didn't expect Guo Zhenglin and Ma Ma to go crazy, and he said just now that he wanted to forget his original intention, and now he suddenly gave up, it was really a little unspeakable.

"Yuan Jianzheng, what do you think?" Li Jie looked at Yuan Jianzheng with a righteous face, and secretly prayed in his heart that the other party must stick to his opinion, even if he died, he would go down, so that he could borrow a step to go down.

However, without waiting for Yuan Jianzheng to express, Guo Zhenglin came out again to stir up the situation and said: "Yuan Jianzheng, although you and I have different opinions on astronomy, but you are also an astronomical master, we can only stand on the ground and look up at the starry sky before, and it is rare to have a chance to go to the sky, so that we can observe the starry sky at close range, and may even touch the moon and stars, do you really want to give up so easily?" ”

Yuan Jianzheng also showed a tangled look when he heard this, Guo Zhenglin was his subordinate, and he was his junior, so when he heard the other party's words, he also felt a little embarrassed, and the fear caused by his extreme fear of heights was also dispelled a lot.

Seeing Yuan Jianzheng's expression change color, Li Jie also secretly said that it was not good, and then saw Yuan Jianzheng standing up straight and said: "What you said is very true, when your father and I used to observe the heavenly statues, we used to sleep for seven days and seven nights, but now I am old and I don't have the sharpness of the year, but I can't lose the face of Qin Tianjian, let's continue to rise!" ”

Ma Hama also cheered excitedly when he heard this, Guo Zhenglin's eyes were red with excitement, his father and Yuan Jianzheng were best friends, but because of academic differences, the two families were like fire and water, and now Yuan Jianzheng took the initiative to mention his father, obviously he already had the intention of reconciliation, presumably his father must be very happy when he knew.

"This ...... Okay, let's keep improving! Li Jie had no choice but to bite the bullet and say that he had to finish the cannon with tears in his eyes, although he knew that no matter how high he raised the height, he would not be able to see the whole picture of the earth, but even Yuan Jianzheng, who was extremely afraid of heights, agreed to rise, and he really couldn't stop them from seeking the truth of science.

At the moment, the four of them worked together to make the hot air balloon continue to rise, during which Li Jie wanted to regret it several times, but seeing the enthusiasm of Guo Zhenglin and Ma Hama, he swallowed the words that came to his mouth again.

I don't know how long it took for the hot air balloon to rise to a very terrifying height, but the earth still maintained a clear arc, and it was impossible to see the whole picture of the earth.

"No...... No, the air is too ...... It's too thin, if it goes on like this, we will die of lack of oxygen if we don't freeze to death? Finally, Li Jie said with trembling lips, at this altitude, he already felt that it was difficult to breathe, and the temperature was getting lower and lower, and a layer of hoarfrost had formed on their hair and eyebrows.

"What is hypoxia?" Guo Zhenglin was also tired and paralyzed at this time, but he still keenly grasped the unfamiliar noun in Li Jie's words.

"Oxygen is a component of the air, and the reason why we need to breathe is that we need this oxygen, and without oxygen, people will definitely die." Li Jie explained in a bit of confusion that he didn't have any strength in his whole body, and it was not tired, but caused by lack of oxygen.

The situation of Guo Zhenglin and the three of them is similar, especially Yuan Jianzheng, he is older and his physical fitness is worse, at this time, he is paralyzed in the hanging basket and does not move, only caring about panting, but his chest is like pressing a big stone, and it is useless to inhale more air.

"Original...... It turns out that there is such a mystery in breathing, Li Sijian is really ...... What a erudite! Ma Hama also breathlessly admired when he heard Li Jie's explanation, and then he looked at Guo Zhenglin, and finally spoke again, "I don't think I can hold it anymore, let's ...... Let's go down! ”

"I ...... I have no opinion, it's a pity that I can't get to the moon! Guo Zhenglin nodded first, and then said with some annoyance.

Li Jie wanted to explain that he couldn't climb to the moon by relying on a hot air balloon alone, but he couldn't bear to dampen Guo Zhenglin's enthusiasm, so he comforted: "The performance of our hot air balloon is still too poor, and I will find a way to improve the performance after waiting for it, so that it can fly higher and more stable!" ”

"What Brother Li said is very true, I can also go to the Ordnance Bureau to help at that time, I hope Brother Li will not dislike it." Guo Zhenglin struggled to stand up at this time, apparently wanting to operate the hot air balloon to descend.

"Welcome, but be more careful next, there may be some risk when descending!" Li Jie also struggled to stand up at this time.