The momentum of running gradually accelerated, the roar of the giant elephants resounded over the entire battlefield, the momentum of the orc army was raised, and all the orcs howled wildly, waving the weapons in their hands and rushing towards the city wall.

Shangguan Yutong bit his lower lip tightly, his beautiful face looked a little pale, a strand of hair hung down in front of his forehead, and he didn't brush it away, his two hands were clenched into fists, and the green tendons on the back of his white jade hands were clearly visible, staring at the group of Comodo war giants running at the front.

At this time, all the surrounding orc troops began to assemble in this direction, and there was a loud roar from inside, looking at the posture, it was prepared that after the giant elephant broke through the city, the orc troops behind immediately followed up and rushed into Cameron Town in one fell swoop!

"Ahh

"It would be nice if I could dig some traps outside beforehand," Xiao Lin sighed and shook his head: "It's a pity that it's too sudden!"

"If this is the only ability, Cameron would have to be flattened a hundred years ago!" Shangguan Yutong almost gritted his teeth and said, "Why don't you use the magic crystal cannon yet!"

"Magic crystal cannon?" Ling Xiao repeated a sentence in his mouth, this word seemed to be somewhat familiar, probably mentioned by his father Ling Tianxiao, as if to solve Ling Xiao's doubts, the original defense army on the city wall suddenly decreased a lot, and immediately, more than a dozen huge black cannon barrels with one person were stuck on the battlements of the city wall, and the black muzzles were aimed at those Comodo war giants who were getting closer and closer.

"Great!" Shangguan Yutong exclaimed like a little girl with an excited expression on his face.

Just when those giant elephants were less than a hundred meters away from the city wall, they saw a sudden flash of red light on the mouth of one of the cannon barrels, and a very thick beam of light shot out silently!

The color of the speed of light turned white, and you could feel the tremendous destructive power contained in it from afar! In the middle of it, a Comodo war giant elephant rushed to the front, and the behemoth, which was more than five meters high, was shattered by this blow before it could even make a scream! Red blood danced all over the sky, and there was some minced meat! And on the ground, a huge pit with a diameter of more than ten meters and a depth of five or six meters was blasted out!

Ling Xiao was shocked to see it, this was the first time he had seen a powerful weapon in this world, it had such an amazing lethality! For Ling Xiao, I am afraid that only a master of the Yuan Infant Stage in the Cultivation Realm could make such a big move!

With his cultivation in the Jindan period at that time, he might be able to kill the war giant elephant, but he would definitely not be able to achieve such a terrifying killing effect!

The defenders on the city wall, a burst of cheers that shook the sky!

The other Comodo war giants below didn't even need to be commanded by the orcs on their bodies, and frantically turned around and ran back towards their headquarters. Those orc troops that had just been assembled were therefore affected to a certain extent, and many orcs were trampled to death. The entire orc camp was in a panic!

"If you take this opportunity to fight out of the city, you may be able to repel these beasts in one go!" Shangguan Yutong looked at the closed city gate and said with some annoyance.

Ling Xiao suddenly asked, "Since this magic crystal cannon is so effective, why didn't you take the opportunity to kill all these war giants just now?"

Shangguan Yutong glanced at Ling Xiao: "How did you get such a powerful lethality as a magic crystal cannon? To launch it once, you need at least a dozen second-order demonic beast crystal nuclei! And it must be the same kind of crystal nucleus! Otherwise, why are crystal nuclei so expensive? Many of them are purchased by the state! As a strategic reserve! No one will use this thing unless it is absolutely necessary!"

Regarding the knowledge of the magic crystal cannon, it seems that except for Shangguan Yutong, several other teachers don't understand, and they are all surprised when they hear it, God, where is this still a powerful weapon to kill and injure, it is simply a bottomless pit that devours gold coins!

Shangguan Yutong continued: "And this thing is huge and heavy, inconvenient to transport, there is no space ring to take away this kind of big guy, used in war, almost all of them are to defend the city, and you have also seen that its lethality only acts within 100 meters, so the magic crystal cannon is usually used for deterrence, if it is not for this terrible Comodo war giant elephant this time, I'm afraid we won't have a chance to see it!"

Su Xiu chuckled at this time: "Teacher Shangguan, you know so much!"

Shangguan Yutong smiled reservedly, and then said: "I just read a lot of classics in my usual days, when it comes to this knowledge, I think the strongest should be Teacher Ling Su!"

Suddenly, when he heard Teacher Shangguan mention his sister who he had never met, Ling Xiao was suddenly very interested and listened attentively.

Several other teachers glanced at Ling Xiao, then nodded in unison, and Su Xiu said, "Yes, Teacher Lingsu hasn't been back for a long time, and it's been more than half a year since he left!"

Shangguan Yutong also showed a nostalgic look on his face, and said softly: "She will, she should still be in the Zichuan Empire, when she left, she said that she got an ancient drawing, located in a certain mountain range of the Zichuan Empire, she is alone, I am really worried about her!" said and looked at Ling Xiao with a smile: "You have to become stronger quickly, then your sister will be protected!"

Ling Xiao nodded, the first time he heard others talk about his sister, there was a strange feeling in his heart, for his brother and sister who he had never seen, Ling Xiao had always been vague, and at the same time there was a strong desire in his heart, as if he would feel very close when he heard the name!

"The orcs have retreated temporarily!" Xiao Lin pointed to the group of orc troops retreating into the Butamian grassland, and then said, "We have a chance to enter the city!"

"Could it be their trick, right?" Su Xiu whispered.

Shangguan Yutong shook his head: "They just suffered a big loss, so it is unlikely that they will be cheated!"

Sure enough, the large army of orcs retreated for miles before they began to rest.

The caravans and adventurers who were trapped outside flocked to the city gate, and as soon as the defenders saw the orcs retreating, they also opened the city gate, and Ling Xiao and a few people took the opportunity to blend in. Because the orcs were so easy to recognize, the tired soldiers didn't even look too hard to let the group in, and then quickly closed the gates.

The streets of Cameron Town are no longer as lively and prosperous as before, the streets are deserted, and there are almost no people in sight, a few people quickly returned to the Brilliant Hotel, and saw a few teachers below, and finally reassured that all the students are currently very safe, and even those who have not gone out are staying in the hotel.

Ling Xiao was anxious to refine Zhuji Dan, and after saying hello to Shangguan Yutong, he went back to the room, and the night owl was really not there, because refining Zhuji Dan took a certain amount of time, so he went to see Isha first, and saw Ling Xiao return safely, Isha was so happy that although it was a little strange for Ling Xiao not to be disturbed, he agreed obediently and did not ask.

Ling Xiao returned to the room, locked the door, and took out the high-grade alchemy furnace that had been prepared from the ring, this kind of Dan furnace was triggered by a first-order crystal nucleus, which could be regarded as an extremely luxurious Dan furnace, and ordinary people would never dare to use it if they were not super rich.

Taking out the purple and blue vermilion fruit, the heart of the earth dragon, and the caryophyllum grass at one time, Ling Xiao was silent for a while, praying in his heart for the blessing of the ancestors of the Shushan faction, and it was best to succeed in alchemy once.

Speaking of which, Ling Xiao was still relatively sure about refining the pill, but this time it was of great significance, so he couldn't help but be cautious.

Finally, when his state of mind was completely peaceful, Ling Xiao cut a piece of the Earth Dragon's Heart with a jade sword and put it into the Dan furnace first.

The pure power of the first-order fire crystal nucleus made the Dan furnace heat up rapidly, and at this time, Ling Xiao's state of mind also returned to the most stable realm, falling into an ethereal state.

Alchemy must not be sloppy, and if you are not careful, you may fail in refining.

As time passed, the sweat on Ling Xiao's forehead gradually increased, alchemy consumed spiritual power extremely much, and at the same time, it also had great benefits for the growth of spiritual power!

Finally, hearing the sound of the Earth Dragon Heart being refined in the Dan Furnace, Ling Xiao quickly picked up the lid of the Dan Furnace with a tool, put two caryophyllum grasses into it, and continued refining. At the same time, a refreshing fragrance came from the Dan furnace, and Ling Xiao had a smile on the corner of his mouth, and he didn't care about wiping the sweat on his forehead.

Finally, after more than four hours, the refining of the pill came to an end, and Ling Xiao opened his eyes and stared at the Dan furnace with some nervousness in his heart.

At this time, there was a sudden panicked sound outside, and then I heard Isha's knock on the door: "Brother Ling Xiao, open the door quickly, the orcs have come in!"

Ling Xiao looked still, looked at the Dan furnace intently, withdrew the last trace of firepower, picked up the lid of the Dan furnace, and suddenly, the room was full of incense!

And the knock at the door became more and more urgent......;