Sure enough, comparing the area on the map with the real land area, it was really exactly the same as what Chen Xuan said, which surprised them.

However, he nodded as a matter of course, how could they figure out who could be the representatives of all the classes.

"Students, I'm sure you can see that what the class representative said is exactly the same as what you saw, so you want to know why this is the case?" Chen Yushan looked at the students who were studying seriously, nodded with satisfaction, and spoke.

"Teacher, let's let the class representative continue to speak." One student raised his hand to speak.

"Forehead......" Chen Yushan glanced at Chen Xuan with some resentment. However, he still maintained the teacher's etiquette, smiled slightly, and said, "Then please ask the class representative to continue." ”

Chen Xuan thought about it, and slowly said what he knew, "The earth is originally a sphere, and the length of the latitude varies, among which the equator is the longest, and the farther away from the equator is the shorter the latitude. ”

The Mercator projection turns a three-dimensional sphere into a rectangular two-dimensional map, spreading all the parallels on a plane, so that the lines of latitude near the north and south poles are stretched to the same length as the equator. The advantage of this method is that the meridian and latitude lines intersect perpendicular to any location, and you can always "find north" on the map, which is widely used in navigation maps. ”

"However, the disadvantage is also very significant, the closer you get to the poles, the more deformed the area becomes, which is why Greenland looks so big."

"It's worthy of being a top student, it's amazing!"

"A great god is a great god, and it is really not something that we ordinary people can figure out."

"He is so handsome and knowledgeable, he really deserves to be the man I fancied......"

The female students below, looking at the confident and handsome Chen Xuan, couldn't help but feel a little nymphorough, and they were constantly lustful in their hearts.

"Teacher, since the Mercator projection method is so inaccurate, why don't we use other projection methods?" A male classmate wearing glasses raised his hand and asked suspiciously.

"In fact, there are many kinds of map projection methods, each with its own advantages and disadvantages, and it can be used alternately in different use scenarios, but none of them is perfect." Chen Yushan explained with a smile, "Maps are not completely real worlds, but they subtly affect our worldview. ”

"Bell bell bell ......"

"Alright, that's all for today, class!" Chen Yushan smiled lightly.

After Chen Yushan left, a bunch of men and women surrounded and began to ask questions excitedly.

Chen Xuan supported his chin with one hand and replied seriously and gently.

"Chen Xuan, why is your academic performance so good, and how do you study."

"Read more books, use your brain more, and practice more."

"Class representative, why are you doing so well in all your subjects, you must have a specific way, right?"

"No, just extra time to read."

"Class representative, you are so smart, will you be very stressed at the same table?"

"Ah......" After hearing everyone talk about herself, Ye Lingxuan's cheeks flushed, and she lowered her head slightly, not knowing how to answer.

"What's wrong with poor academic performance, I also have poor grades." Xiao Qiongjing hugged Ye Lingxuan's head and said proudly and confidently.

"Little Joan, don't make trouble." Ye Lingxuan said embarrassedly.

"In fact, grades are not a measure of a person's standards, a person's personality, style of doing things, and adaptability are all things I admire." Chen Xuan smiled lightly.

"Xueba deserves to be a scholar, and his thoughts are really not beyond the reach of us mortals."

"Big head, it's useless for you to say these words, it's better to go and fight the king."

"I also have ideals to repay the negative, okay?"

"Oh? Your ideal is not to count the money until your hands cramp? Sleep until you wake up naturally? ”

"That's my main business, and I still have a side hustle!" The big head smiled confidently and raised his head proudly, my brother is so confident.

"Phew, shameless!"

"What......"

……

In this way, in the laughter, three years passed in a hurry.

Chen Xuan leisurely strolled through a small path in the quiet and dark campus, the sky was drizzling at this time, Chen Xuan did not run to avoid the rain like those students, but let the drizzle fall on his body.

"Every grass and tree, the sun and the drizzle, all have avenues in the period, in my life, some too cautious, I don't seem to remember clearly, how long has I not carefully tasted the natural gifts of this world."

Walking step by step in the tree-lined paths of the campus, Chen Xuan's clothes had already been wet by the rain at this time, although the rain was not violent, but between the drizzle and the lasting, moisturizing things silently, Chen Xuan's clothes had already been wet, making him look like a down-and-out young man.

Chen Xuan looked up at the sky, and his palm gently stretched out.

"Smack!"

A few drops of rain fell from the sky into Chen Xuan's palm, "Is it silent to moisten things?" ”

Chen Xuan muttered to himself, "This rain was born in the sky and died on the earth, and the process in between is its life." ”

"Today's rain is rain, it's not rain, it's this day, it's not this day, it's this earth, it doesn't seem to be this land, it's the life of this rain, this ...... It's life and death! ”

When the words fell, Chen Xuan's wrist was slightly raised, and his five fingers were pressed into the air.

"Boom!"

In an instant, the drizzle of this piece of heaven and earth instantly stopped in mid-air, as if time stood still!

Between heaven and earth, fate arises and dies. Just like falling flowers and flowing water, when the flowers are at the end, the water has an end, and it is clear that it is over, but it is the time when the flowers bloom. Hundreds of millions of flowers bloom, how can we know prosperity and glitz, only through experience, can we understand.

Only when you have been in pain will you understand. Just go, come and go, come and go without staying, life is disillusioned, like a mirror. There is a beginning and an end, and there is life and there is destruction. In the vast universe, nothing can escape the cycle of birth, death, prosperity and decline. Nothing is outside, drifting away, and there is no longer the slightest stagnation.

"All things in life are cyclical, rain falls from the sky, falls to the ground, moistens all things, under the action of the sun, and returns to the air, and then becomes rain and falls on the earth, this is an endless process!"

"Is it endless?" Chen Xuan stared at the raindrops that kept dripping, the seal in his body gradually weakened, and suddenly, the purple-gold sword qi in his body gushed out wildly, turning into a purple-gold dragon that swept across the Eight Desolations.

"Is this the law of life?" Chen Xuan frowned, then shook his head, "No, this is not the law of life, but the law of destruction!" ”

"Haha, comprehend the law of destruction today and break through the god transformation period!"

Chen Xuan laughed lightly, and the Divine Illusory Shadow behind him then towered above the Nine Heavens, and then an invincible aura of destruction erupted, and an invincible Divine Illusory Shadow evolved above his head.

As if it could destroy the heavens and the earth, and it seemed to be able to destroy everything, the endless Dao rhyme was like ripples, rippling above the nine heavens.

"Dang!"

A bell rang, and the rolling aura of Dao rhyme seemed to congratulate Chen Xuan on his comprehension of the law of destruction, and it seemed to be protecting the common people.

"No wonder the great powers of heaven and earth like to walk alone between heaven and earth, and sure enough, this heaven and earth are the teachers of cultivation!" Chen Xuan let out a long sigh, looked at the gradually disappearing campus, and finally entered a passage, his path had gradually become clear.

(End of chapter)