"Oh, could it be from a book that you read it from, but wasn't this dungeon discovered half a year ago?"

Edward, who was not far away, heard the conversation between the two and seemed to be interested, "Boy, you must be bragging, I heard many people mention this city wall when I was in the camp, and everyone who has seen it is deeply impressed, but no one knows how high this wall is, and there is even a special market to bet on the height of this wall, but unfortunately until now, everyone still has their own opinions, and no one can come up with any decisive evidence." Pen Fun Pavilion wWw. ｂiquge。 ｉｎfo”

"Well, it's not that complicated, we all know that the position of the sun in the sky is constantly changing, but if it doesn't take a long time, this change can actually be ignored, and the light coming out of the sun, well, can basically be seen as a straight line. "When light falls on an opaque object, it leaves a shadow on the ground, and if you measure these objects and shadows, you come to the interesting conclusion that at the same point in time, any object, regardless of size, has a fixed proportion to their shadows. ”

"I used this conclusion to calculate the height of the wall. ”

"Wait, how do you do that?" Edward was confused, what light, shadow, proportion...... These things are a little too trendy for old thieves.

"Specifically, I knew my height, and I could calculate the length of my shadow on the ground, so that I could get a proportional value, and then I measured the length of the shadow cast on the ground by my footsteps, and finally I could calculate the approximate height of the city. ”

"Is it just that simple?" the old thief's eyes widened, and although he still didn't understand much, it didn't prevent him from having an unclear feeling in his heart, should he say that he really deserved to be a learned fellow, and his head was full of these strange things.

The rookie brave man on the side roughly understood the little entourage's thoughts, but because of this, the girl's face couldn't help but show a surprised expression, "You even know geometry?"

"Uh...... It seems that yes. ”

"Wouldn't you be a little too foul like that?"

"No, make a fire...... I don't understand. ”

"Well, I now have more and more reason to suspect that you are simply evading your responsibility to cook. ”

Fortunately, Luo Luo didn't dwell on this issue too much, and soon had a new question, "With such a high wall, is it the Giant Clan living in it?"

It is not unreasonable for the girl to speculate like this, not only is the wall ridiculously high, but even the stone bricks used to build the wall are also amazingly large, the width of a single stone brick is about two meters, and the length is an astonishing six meters, no brick kiln can fire such huge stone bricks.

"Not the Giants. Edward interjected, "Those stupid big men of the Giants don't have such a high construction process, those guys can't even build a pigsty, let alone this majestic city wall, it is said that the dwellings in the inner city are close to the size of the buildings on the ground, so the race that built this place should be about the same size as us humans." ”

Rob stretched out a palm and pressed it on a stone brick, although it had passed the baptism of time, the surface of the city wall was still smooth and smooth, the gap between the bricks was very small, no plant could take root here, when the boy's finger touched the stone brick, the great magician found that he had suddenly lost contact with the magic elements around him.

Tsk, sure enough, just like the book records, the walls of the dungeon can actually block magic.

This is because each stone brick used to build the castle has a certain amount of Mithril mixed into it.

At present, the best of all known materials for elemental isolation is Mithril, but the reserves of Mithril have always been very scarce, and the Mithril veins are usually buried very deep, except for the dwarves, no other race has effective exploration methods, in fact, even in the dwarf world, Mithril is also very rare, and the dwarven craftsmen are also very precious to Mithril, and they are only willing to use a little when building the best equipment.

This type of equipment is also known as demon-breaking equipment, and in the Second Magic War, demon-breaking equipment was once regarded as a trump card against human magicians, but unfortunately, because the production of Mithril is too small, this kind of equipment is destined to be unable to be mass-produced.

If those grumpy dwarven craftsmen saw this wall, they would probably jump to their feet in anger, and mix Mithril into every brick, which must be a lot of ruined behavior, and building such a wall, the consumption of Mithril will be astronomical.

Of course, the defensive effect in exchange is also extremely terrifying.

Basically, spells below the forbidden spell had no effect on this wall at all, and even if the ninth-order forbidden spell landed on this forbidden demon wall, it was only less than half of its power.

In a sense, the existence of this wall is as if it were specifically designed to restrain the mage profession.

But strange humans have mastered magic less than a thousand years ago, and this dungeon has been sleeping here for tens of thousands of years, so why should a civilized person be wary of threats from tens of thousands of years later?

His Excellency the future Ultra Magister quickly overturned this assumption, no, this wall was not designed to deal with mages, for the simple reason - it was simply too high.

If it's really to deal with human mages, instead of building a high wall like this, it's better to use excess Mithril to craft more demon-breaking equipment, just like the dwarves did in the Second Magic War.

Known as the Steel Fortress, the Fireplace Fort is one of the best cities in the Dawn Continent, and it has paid a heavy price for the Terrans there back then. But even the walls of the Fireplace Fort are only thirty meters, which is far more than the height of many siege machines, and the magician's favorite levitation technique can only make people twenty meters above the ground, plus five hundred pairs of demon-breaking equipment, that battle is not ordinarily hard.

Even if you include the floating battery, which is known as the ultimate weapon of mankind, the limit height of this heavy weapon is only 100 meters. Therefore, if it is just to guard against the magician, there is no need to build a behemoth with a height of two hundred and forty meters.

Seeing this magnificent wall, His Excellency the future Super Magister couldn't help but have a trace of curiosity in his heart, what kind of enemy did the guy on the other side of the city wall face back then?

Hansen, as the leader of the team, was thinking about something else, and the second-order swordsman looked up at the wall and said regretfully, "It's a pity that you can't climb up, otherwise there must be a lot of good things on it." ”

"Huh?"

"The head of the city usually prepares some heavy long-range weapons, and if you can get one and sell it to any force, you can make a lot of money, but unfortunately it is said that the stairs to climb the wall in the city have also been destroyed, and the wall is too high, and no one can climb it now. ”

(Thanks to the sister control of the big devil, the third number theft, obsessed with chemistry, Dongfeng Intercontinental and other tips from several boots~)