Guo Ye rushed into the flower hall, and as soon as he crossed the threshold with his front foot, he hurriedly shouted without even seeing the figure of Changsun Yumo: "Eldest Sun Yumo, you kid is willing to come back, huh?" ”

Before he finished speaking, he caught a glimpse of a straight back in the flower hall, but he was dressed like a bearded suit, and the boots under his feet were even more like the sheepskin boots of the Western Regions.

People from the Western Regions? Hu people?

Could it be that the porter looked away, and the visitor was not the eldest grandson Yu Mo, but the Hu people of the Western Regions who looked similar to Yu Mo's kid?

"Haha, in less than a year, the Marquis of Yizhou has become the Pingyang County Mansion, Guo Ye, your kid is quite fast?"

But in fact, the porter was not mistaken, as soon as this Hu man from the Western Regions turned around and spoke, Guo Ye knew that he had guessed wrong, and the one in front of him was the eldest grandson Yu Mo.

Guo Ye shook his head and wondered: "Good manner, why did you kid wear a Hu suit?" Startled me, I thought it was a Hu person from the Western Regions who came to the door to seek revenge. ”

I haven't seen him for a long time, Guo Ye found that the eldest grandson Yumo's face was much darker, but he was also a little more stable, and he was quite mature after a little wind and frost.

The eldest grandson Wuji sat down on the wide-backed guest chair by the side of the hall and quipped, "What? Tsk, a huge Tubo country has been stirred up by you, not to mention, it is still facing a situation of collapse and no existence. Do you know that you have caused a lot of evil in Tibet, and you are worried that the enemy will come to you to ask for your life? Haha......"

When Guo Ye heard this, he couldn't help but say happily: "Why do you kid seem to know everything, don't tell me that you have been staying in Tubo for so long?" ”

Guo Ye remembered very well that the eldest grandson Yumo was separated from him in Yangzhou, saying that he was going to go to Tubo to find Yunsheng's girl. But the last time he went to Tibet as an envoy of the Tang Dynasty, he also asked Yunshang if he had the whereabouts of Changsun Yumo, but the other party didn't know anything about it, and he hadn't seen Changsun Yumo at all.

Guo Ye thought that this kid had returned to Chang'an, and with a series of events that happened in Tubo later, he went to Tianzhu Kingdom, so he forgot about inquiring about the whereabouts of the eldest grandson Yumo.

I talked about him in Fang Xuanling's mansion today, but I didn't expect this kid to appear in his house out of thin air.

I only heard the eldest grandson Yumo shake his head and said with a smile: "I have been to the country of Tubo, but I didn't stay for a long time, but just passed through." When I was traveling in the Western Regions, I heard those business travelers in the past mention those things in Tibet. Your kid's reputation is now very loud, and the four words of Tang Guo Ye are resounding throughout the Western Regions. ”

"What? Have you traveled to the countries of the Western Regions? ”

Guo Yeqi said: "So, during the days you have been missing, you have basically wandered in the countries of the Western Regions?" ”

"What wandering? That's called traveling the world and increasing your knowledge, okay? ”

The eldest grandson Yu was indignant and corrected: "When I was in the country of Tubo, I happened to meet a group of Persian merchants, and then it was a coincidence, or a ghost envoy, I actually stayed with them in Tubo for two months. After slowly getting in touch, I found that their footprints were all over the countries of the Western Regions, so I longed for it, and as they traveled in the countries of the Western Regions while doing business, you know? I've been to the Great Food Country with them as far as I've ever been. When I arrived in the Great Food Country, I realized that the world was bigger than I had imagined. ”

Guo Ye was stunned and didn't expect that there would be such an episode in the days when the eldest grandson Yumo disappeared, this kid was still as rebellious and adventurous as ever in his bones, how could he dare to travel to the Western Regions with a group of Persian merchants of different cultures and races?

It's just that this kid dares, but this is also in line with the character of the eldest grandson Yumo.

Immediately, he smiled and said: "So you kid is still quite chic these days, the world is so big, of course, beyond your imagination, do you think that the end of this world is the big food country?" That would be a big mistake. ”

"Of course not!"

As soon as Eldest Sun Yumo heard Guo Ye talk about this, his eyes immediately lit up and he gushed endlessly: "I heard people say in the Great Food Country that our Tang Dynasty, including the countries of the Western Regions, and even Persia, is only a small part of this world. At the end of the vast sea, there are countless countries, different races, and all kinds of strange yellow hair and green eyes. In short, this world is very big, so big that even if I exhaust this life, I may not be able to finish it.

Moreover, I also met a madman in the Great Food Country, who even told me that the world is round, not square. I argued with him for a long time, and he insisted that the world was round. And he showed me a ball of his own, saying that the world is actually a ball. Grandma's, I said that if this world is a ball, won't everyone on the other side of the world all fall? And he told me why apples fall from trees to the ground instead of flying into the sky when they are ripe. That's why the person on the other side of the ball is able to stand firm, he said. When he said that, I think that's really the case. ”

Speaking of this, Eldest Sun Yumo paused and continued: "Later, I asked this madman, why did the apple fall down and not fly up? But he couldn't say why, and then he ran away in a frenzy, saying that he wanted to watch the apple fall to the ground......"

The Doctrine of the Circle of the Earth?

The speaker has no intention, but the listener has the intention.

Guo Ye secretly exclaimed that in the 6th century BC, the ancient Greek mathematician Pythagoras proposed the concept of the earth for the first time in the world. In the 3rd century BC, Eratosthenes, a scientist from Alexandria, established the concept of the earth using geometric methods. In the second century A.D., the Greek geographer Ptolemy also argued that the earth was a sphere in his Almagest Astronomy.

However, these are just some mathematical inferences and theoretical arguments. In this day and age, almost no one agrees with the doctrine of the earth circle.

It was not until the 16th century that the Western explorer and navigator Magellan proved the theory of the circle of the earth with practical actions.

As for the reason why the apple fell to the ground that the madman in his mouth said, isn't it the law of gravitation discovered by Newton?

But Guo Ye remembers very clearly that Newton was not a person of this era, let alone a big eater, but an Englishman from the 17th century, which was obviously a thousand years away.

Guo Ye glanced at the eldest grandson Yumo, and said in his heart, maybe what he met in the Great Food Country was not a madman, but a wise man who was awesome and roaring.

Yu Mo, this stupid boy, it's a pity, if this wise man is brought to the Tang Dynasty, maybe we Chinese people can replace Newton and let the law of gravitation be born a thousand years in advance. It can also replace Magellan and take the lead in proving the theory of the circle of the earth with practical actions.

Who knew that Guo Ye was secretly sighing a pity here, and the eldest grandson Yumo over there spread his arms endlessly and shouted: "So, through this trip to the Western Regions and the trip to the Great Food Country, I have found what I want to pursue in this life." Guo Ye, do you know? Before I returned to Chang'an, I made a great wish that I must lead a fleet of my own and go out to sea for an expedition, and I will reach the other end of the vast sea, and I will see what the people of other countries look like, and see their customs and customs. Finally, I want to find the end of this world, and I want to see if this world is square or round. ”

Your sister!

Guo Ye was stunned by Eldest Sun Yumo's words, he looked at Eldest Sun Yumo with a face full of yearning and endless desire to explore, and muttered silently:

"Leading a fleet on an expedition?"

"To prove that the world is not a ball after all?"

Damn, does this kid really want to be China's Magellan?

Guo Ye couldn't help but get moved, and secretly thought, if I help Yu Mo at this time, will world history be quietly changed because of it?

Grandma's, at this time, Guo Ye has to admit that Archimedes is too right, give me a fulcrum, I can pry the earth!

"Hey, Guo Ye, what do you think of my thoughts? Is it reliable? ”

Eldest Sun Yumo's eyes were full of anticipation, staring at Guo Ye without blinking.

"Uh...... Yu Mo ......"

Guo Ye scratched his cheeks, then nodded heavily, and said, "The world has changed because of you!" I can do something for you, my brother! ”