Cai Yong solved this question for many days without success, and he later had an idea to come up with the answer, at that time he boasted that he was very smart, but now he saw that Li Yi only used a moment of effort, and easily solved the answer. Pen? Interesting? Pavilion wWw. ｂiquge。 info Cai Yong was really shocked, he lost convincingly, even if he was twenty years younger, he knew that he was by no means Li Yi's opponent, this number of techniques, Li Yi was a well-deserved leader, Cai Yong was willing to bow down.

"Qing Gangxian's nephew can solve questions and answer problems in an instant, and he is worthy of being a young talent, but he is beyond the reach of old decay!" Cai Yong's eyes were full of appreciation.

But Cai Yong was determined to embarrass Li Yi, and he would never give up until he reached his goal, and happened to catch a glimpse of a book on the astronomical calendar. Cai Yong immediately had an idea, he took the book in his hand and asked: "Qinggang has a solid foundation in mathematics, and it is second to none in my Han Dynasty, and no one can match it!" But the number of fine arts must be practiced in the calendar, I don't know how much Qinggang has experience in this? ”

Astronomy is vast and profound, and it is difficult to get a glimpse of it in his entire life, and Li Yi is only full of curiosity about the vast universe, and he has liked to dabble in this knowledge since he was a child.

Li Yi still clearly remembers that there was a text in primary school "The Child Who Counts the Stars", in which the child who was full of fantasy and liked to count the stars in the sky at night when he couldn't see his fingers was named Zhang Heng. He was a famous astronomer in the Han Dynasty, who invented the armillary sphere and the geodynamic sphere, and was also a representative of the armillary theory.

However, the overall low level of science and technology limited the exploration of astronomy by the Han people, and their understanding of the celestial bodies of the universe only stayed in the initial stage of the armillary theory.

Faced with Cai Yong's question, Li Yizhen didn't know where to start. If you don't know anything about it, even if you are facing Zhang Heng, a top scientist, you will fall into the clouds. But I don't know how much effort it will take to explain in detail, and I don't know if Cai Yong has the ability to understand.

Li Yi's astronomical knowledge is only a drop in the ocean, and even the scientists of his era have extremely limited understanding of the universe. The universe is vast and all-encompassing, from the macro to the microcosm, with the wisdom and scientific and technological level of human beings, it is also a long way to go to explore the mysteries.

"Although he was not familiar with the evolution of celestial phenomena in his later life, he could also know that he was not far from ten; For the calendar agricultural time, the younger generation can also know a little bit about it. Taking the astronomical level of the Han Dynasty as a yardstick, in line with the attitude of seeking truth from facts, Li Yi is not exaggerating, he said with confidence: "The incompleteness of the records in this book, I know more than ten times more than this." ”

What the? Did this young man suffer from typhoid fever, and why did he talk so nonsense? If you want to say that the number of techniques is superior, you can really do it with your flexible brain. But this astronomical calendar, but many astrological magicians, after an unknown number of years of investigation and research, summed up the experience, you a milky and dry hairy child, you are not ashamed, boasting of surpassing the total!

"I really didn't see it, Qinggang actually has this magical power, the old man is ready, and he listens to Xiaoyou's high opinions." Cai Yong was no longer simply angry, he was already slightly angry, and the few strands of beard under his chin trembled slightly.

This blew his beard and stared, Li Yi sighed secretly in his heart, but on the surface, his face tightened, and he kept as calm as possible: "Let's start with this heavenly theory, today's people of insight believe that the earth is floating in the atmosphere, can rotate and float, and luminous stars are distributed on the 'celestial sphere' and orbit around the earth. But I would like to remind you that this argument is extremely inaccurate, and that only the moon orbits around the earth, and that the other stars, although they are different, are absolutely not centered on our earth. ”

What the? Sure enough, he advocated heresy, and I don't know where this kid got such a fallacious reasoning, and he said it so justifiably. Well, wait until you talk about it, and if there is the slightest flaw, you will hit it hard. Cai Yong remained silent, because Li Yi had just made a start, and he wanted to listen more to find more flaws.

"Actually, the earth we live in revolves around the solar cycle, and each revolution is a little more than 365 days, that is, one solar year. The earth itself is also revolving around the earth's axis, and it takes twelve hours, or one day and night, for each rotation of the earth. There are countless stars orbiting the Sun, and there are eight huge planets in them, which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune from the inside out. There is a law of these eight planets, gold, wood, water, fire, and earth are the five elements, heaven, earth and sea are the three realms, and the five elements and three realms plus the star and the sun constitute the main body of the solar system. Of course, the solar system is extremely huge, not only the nine brothers, but also many followers, those innumerable small celestial bodies, the stars orbit the sun periodically like the moon, which constitutes our solar system. Li Yi said for so long in one breath, a little dry mouth, he licked his lips habitually, but found that it was not dry and cracked, the climate in the south of the Yangtze River is good, although it is late autumn, it is still moist.

Listening to the brand-new tone, Cai Yong's expression was extremely complicated, if you want to say that you don't believe it, but Li Yi is the truth, and he can't find a loophole for a while, if he believes it and has no evidence, how can he change the opinion he has formed over the years with the mouth of a young man?

"What Xiaoyou said is not unreasonable, but based on facts, please show real evidence to prove your established views." Cai Yong's expression became extremely peaceful, but there was a needle hidden in his words, and he hit the nail on the head.

"That'...... This ...... "I am a mortal with the naked eye, and I can only look at the Big Dipper, a few planets, stars and galaxies such as gold, wood, fire, and earth, let me come up with evidence and have fun!" It's purely embarrassing, okay!

Seeing that Li Yi was speechless, his face was red and his neck was thick, but he couldn't list the evidence, Zhang Ying, who had been listening for a long time, had to break the siege: "Mr. Cai, don't worry, it's not difficult for you to ask for evidence, as long as you follow us to observe every night, you will definitely be able to get it over time." ”

If you want to chase stars every day, who can do this! Besides, you are young, energetic, deaf and blind, and you can stare at the stars, but I am an old man, even if I have this spiritual head, I don't have good eyes!

"Wenyuan, you...... It's hard to be old with integrity, I'm over half a hundred years old, how can I compare with you and other juniors, I can stare at the stars without blinking, but I can't be old! Cai Yong's face was helpless, Zhang Ying gave a solution, he couldn't do it!

Zhang Ying was also extremely cunning, she made a helpless gesture, and then said nothing. If you are old and lacking in spirit and your eyes are spent, then you can't talk about it, and it doesn't matter if you believe it or not, just don't go against it.

Li Yi secretly raised his finger and praised Zhang Ying for his strategy, in the field she is not good at, she also has surprising and winning tricks, which is really convincing. (To be continued.) )