Dragons are creatures with magical powers, but they are not magicians after all, and it is completely impossible for them to perform certain types of magic.

However, this does not mean that Yinlong can't do similar work.

The so-called vigorous miracle, the stone will not fly, just pick it up and throw it out, anyway, there are many on the mountain.

"Think of this experiment as a game, I promise, you'll get a prize for every hit." Vincent whispered in Yinlong's ear before the experiment began, "By the way, if you hit the beef burger you like, I'll give you one."

"A five-pound Big Mac burger, especially a thick patty." The silver dragon glanced at him and said, "It's tiring to work, so don't expect to exert yourself if you don't have anything to eat."

The price of letting the dragon work hard was much cheaper than hiring a magister, and Vincent secretly called it cheap in his heart, so he agreed.

"Of course, as a thank you, I will add a double layer of bacon, the kind that has been grilled with oil."

"Deal!" The silver dragon swallowed a mouthful of saliva, "Demons, don't blame Yu for smashing the fortress."

"Please accept, you are the expert."

In return for enjoying the hamburger, the silver dragon's stone throwing was fast and fierce, and the aim became higher and higher, and after a while, the people who looked at their watches noticed that almost every ten seconds, a boulder whistled and smashed into a radius of about twenty meters.

Maybe the instantaneous output speed is not as fast as the Magister, but the accuracy, strength, and durability of the stone far exceed the genuine Boulder Star Shower, and as long as the lord does not stop, the dragon will not stop.

Although there is no special effect when the magic is activated, and you can't see the strange and treacherous magic of the magic array unfolding in the air, the destructive power of the dragon's throw is completely comparable to the magic of falling stones, and the damage is even more amazing under the continuous correction of the hit rate, and it is simply a terrifying bombardment from a distance.

The first direct hit came when the silver dragon threw the fourth stone, and a half-human-high boulder slammed into the top of the concrete fortress with a dull thud.

However, the hard shell of the cement fortress did not penetrate or collapse after being hit, but withstood the subsequent impact without moving.

Vincent could be sure that the silver dragon's arm strength was huge and had more kinetic energy than a trebuchet, but in the face of a one-meter-thick concrete fortress, this was still not enough.

The skeletons inside were unharmed, they had no life, and therefore no fear, and they would not flee the fortress out of timidity.

Of course, Vincent wouldn't always let the fortress rely on its thickness and structure to resist it like this, and defensive magic had to be used at the same time.

With the loud sound of stones falling to the ground, magic arrays appeared in front of the cement fortress, and seven intermediate magicians who were good at strengthening magic and defensive magic were raising their staffs in their hands, sparing no effort to use magic to empower and strengthen the fortress.

Some of them used magic to harden the surface of the fortress, some found other ways to slow down the movement of the stones, and some built earthen walls and ice shields to constantly cover the outer layer of the fortress.

Maybe the strength of the magic of the intermediate mage is not enough, and the magic may not be very effective, but Vincent doesn't care, the experience of these magic against boulder bombardment can also be used elsewhere, such as the current Western Jungle.

Due to the Great Magister Gasni's specialization in the earth system, most of the disciples and grandchildren he brought were also earth magicians, and the frequency of using stones to hit was extremely high, which was a reality that Brother Leopard and his subordinates had to face.

Herod's Magister is good at using the earth element, so it is very likely that he will encounter similar attacks in future wars, so Vincent is very much in need of similar test data, and he also urgently needs to find a way to fight it.

Finally, after dozens of thrilling blows, the main body of the fortress still stood there, like a small but impregnable fortress, withstanding the dragon's attack, although the surface was full of signs of cracked damage.

Not only is the shell thick, but the foundation is also deep, so even if the fort is actually only half built, it can still effectively protect the fighters inside.

Probably finding that the attack didn't work, the silver dragon gradually stopped throwing, probably not out of exhaustion, but out of shock.

Not only the silver dragon, but even Ninia was surprised, even with the protection of magic,

They didn't expect this seemingly small fortress to be so impregnable.

"Signal stop." Vincent said to Ninia, who was beside him, "It seems to be working well, the cement is cracked, but the main structure has withstood the test."

Before Vincent could get a clear look around the fortress, the silver dragon rushed down the hill like a gust of wind, her face was full of disbelief, and when she saw a group of people planning to investigate, she shouted orders at Vincent:

"Get out of the way! I'm going to burn this thing!"

"It's just the strength of normal magic on the battlefield......

"Roar! Less!"

The lord didn't dare to joke with the dragon's words, and just as he left in a hurry with his subordinates, the silver dragon's neck suddenly bulged, and then a mouthful of hot breath fell on the cement bunker, burning it directly into pitch black.

Under the frightening heat, the surface of the cement dries sharply due to the loss of moisture, and many cracks appear, but the structure is still intact.

The blow wasn't all for nothing, and the flames burrowed into the fortress, dropping a few skeletons inside.

"Master, she didn't do her best." Ninia whispered to Vincent, "When you were a dragon in the mountains, you burned all the mountains through......

The silver dragon was looking at the fortress in a daze, and she seemed to hear Ninia's whispering, and just a dodge jumped to her side, startling Ninia.

"Yu's body is so small now, of course it can't be compared with before, but Yu is very happy, although the body is small, but the food can be eaten to your heart's content, and the demon toys can be played casually, much happier than the dragon, do you understand?"

The silver dragon said and spit out a smoke ring at Ninia, which made Ninia cough for a long time, and in the face of the undefeatable strong provocation, the girl had to choose to endure.

"Alright, alright, it turns out that powerful fire attacks are still difficult to defend against." Vincent came over to play the round, "Great dragon, you did it, you can enjoy dinner to your heart's content."

"Cut...... It's full of undead creatures, it's a big deal to change a batch to go in and continue to guard," the silver dragon didn't feel much proud, probably dissatisfied with her performance, she also took the initiative to put forward an opinion, "Yu's flame is stronger than the magic level of the great magician, you are destined to not meet many great magicians on a small battlefield, even if there is, you can let the magicians fight with ice magic nearby, you can let the people inside survive."

"However, Yu also wondered why this fortress was so hard......

If it is made of the same material as the cement pavement seen before, even if the thickness is doubled, Yinlong does not think that it will be so strong.

Maybe it was too far away, or maybe it was too much smoke and dust, and she didn't see the faint metallic sheen that shimmered from the crumbling walls of the fortress.

The concrete protected the rebar at high temperatures, and the rebar dispersed the impact force on the cement surface, so neither the boulders nor the fire completely destroyed the small fortress.

Can the silver dragon destroy it? Of course, you can, but not everyone can do it easily.

This effect was exactly what the lord expected, and the experts accepted it.

"It's rebar, I added rebar." Vincent pointed to the black iron bars that had been completely peeled off and said, "As long as cement and steel production can keep up, the cement fort can be a nightmare for the invaders."