The Biological Research Institute of the Evil Spirit Legion is the size of half a city, with a total area of several hundred squares, and the entrance is composed of blue ice, the whole is composed of white quartz blocks, and the decoration is composed of various colors of terracotta, which does not look like a research institute, but like a palace where the emperor lives.

Looking at the biological research institute in front of him, Ye Yu suddenly felt that his wooden villa was simply weak, and the building in front of him was really like a palace.

Zombies and skeleton soldiers patrol back and forth meticulously, and if they don't guard well, they will be punished greatly, so they take it seriously, for fear that there will be the slightest mistake and allow the intruder to break in and wreak havoc.

Observing the main entrance of the Institute of Biology with a telescope, Ye Yu felt that it would definitely not work to go through the main entrance, and he had to walk in from somewhere else.

"That's right, the defense is so thorough, and the guards are all sapient skeletons and zombies, this must be the biological research institute of the Evil Spirit Legion."

Nuno didn't think like Ye Yu, what she was thinking about was determining whether the building in front of her was a real biological research institute.

Touching Nuo Nuo's little head, Ye Yu said to her with a smile: "I said Madam, the Evil Spirit Legion will not spend so much money to set up a fake biological research institute here, so the biological research institute in front of it must be real." ”

"Who knows, what if it's fake, anything is possible!"

Nuno retracted her head and didn't let Ye Yu continue to touch, she said to Ye Yu confidently.

Ye Yu was a little helpless in his heart, shook his head and said to Nuo Nuo: "Let's not consider whether it is true or false, and we can only know if it is true or false until we go in, anyway, I don't think the Evil Spirit Legion will spend so much effort, there is a fake research institute here, and there is a real research institute below." ”

Now Nono doesn't think about whether the biological research institute in front of her is real or not, she just wants to know where to enter the research institute.

After observing all directions, Nuo Nuo and Ye Yu determined that the Biological Research Institute was like an iron bucket, and there were no flaws that allowed them to enter easily.

"I didn't find any flaws, otherwise we will attack?"

Nuno turned his head to look at Ye Yu and asked for his opinion.

Ye Yu shook his head and said to Nuo Nuo: "The defense outside is so tight, I don't believe that the defense of the underground will be relaxed, that guy is a chicken thief, I'm afraid the underground is all molten and waiting for us." ”

"I said are you stupid, that institute is standing on the ice, where are you going to get a molten trap?"

After listening to what Nuo Nuo said, Ye Yu reacted and took a closer look at the location where the Institute of Biology stood.

"It's really on the ice, but it's not safe that way, and I think even if there is no molten lava, I'm afraid there will be some mechanism or ambush."

There was really no way to take Ye Yu, and Nuno only gave him one suggestion, that is, to kill it directly, and then put the C4 bomb in it and destroy the entire research institute.

"What are you kidding, you think the two of us are ten thousand enemies, there are so many zombies and skeleton soldiers, I don't know how many guards there are inside, the two of us can't kill them at all."

Ye Yu shook his head and said to Nuo Nuo, and after finishing speaking, he was a little speechless in his heart, and then he continued to look for the flaws in the Biological Research Institute.

Nuo Nuo took a picture of the telescope in Ye Yu's hand, and Nuo Nuo said to him: "Don't look for it, there are no flaws, there are zombies and skeletons patrolling everywhere, as long as we are discovered, it is estimated that they can support as quickly as possible." ”

"Alas!" Sighing lightly, Ye Yu felt very powerless, he really didn't know how to sneak into the Biological Research Institute of the Evil Spirit Legion.

"You can't rush directly, you can't go to the ground, and I'm afraid you can't sneak in from the sky."

After Nuo Nuo said this, Ye Yu suddenly became enlightened and felt that the method of sneaking into the research institute from the air was feasible.

"Let's just dive in from the air, it's going to be fine!" Ye Yu said excitedly to Nuo Nuo, after thinking about it, Nuo Nuo shook his head and felt that this plan was not feasible.

"Xiaoying and Phoenix's target is too big, once it is discovered, won't we become a living target?"

Ye Yu began to tell Nuo Nuo about the plan to infiltrate the research institute from the sky, and after listening to Ye Yu's plan, Nuo Nuo felt that this plan was feasible.

"The plan is feasible, but we don't have the materials for that thing, what should we do?"

Pulling Nuno away, Ye Yu planned to take her to prepare the things and materials needed for the plan first, and then start the plan to sneak into the sky.

On the vast plain, like a whirlwind, the iron hooves of the evil spirit army rushed forward, and Chu Jiangcheng swept this time, killing the heavy cavalry army of five or six zombie skeletons in an instant.

Hordes of cavalry of the Evil Spirit Legion rushed towards Chu Jiangcheng, Chu Jiangcheng was now physically strong, and killing them was like slaughtering a pig and slaughtering a dog.

After collecting some sugar cane and obtaining some silk thread and wool, Nuno asked Ye Yu if the materials were enough.

Ye Yu stared at the virtual panel in front of him and replied to Nuo Nuo: "Enough, enough!" ”

Spend the last points to buy the blueprints of the parachute, fortunately, Ye Yu didn't use all the points obtained from the later tasks to upgrade the lucky bow, otherwise he really didn't know what to do next.

Open the ordinary workbench and put the drawings and materials into the box of the workbench, Ye Yu directly made two parachutes.

Handing one of the two parachutes to Nuno, Ye Yu said to her: "Remember, when it's time to jump, you must take it in your hand, if it doesn't have it in your hand, you just wait to fall to your death." ”

"I know, I'm not stupid, don't worry."

Taking the parachute handed over by Ye Yu, Nuno decided to keep holding it.

Suddenly remembering that Xiaoying and Phoenix didn't know where they were, Nuo Nuo asked Ye Yu: "The two of our mounts are gone, why do you call them to help?" ”

"Don't worry, the two of them will appear in front of you and me soon."

After that, he whistled, and Ye Yujing waited for Xiaoying to bring the phoenix to him and Nuo Nuo.

"Roar!"

A dragon roar resounded in the sky above, and when he heard the dragon roar, Nono looked up at the sky.

"Woohoo! Whining! ”

The long song of the phoenix also reached Nono's ears, and Nono saw it and Xiaoying with a smile on his face.

"Let's go, ma'am, it's time for us to do something!"

Ye Yu said to Nuo Nuo, who nodded, walked to the back of the phoenix, and waited for it to take itself to a high place.

The battle in Griffon City was very fierce, especially Chu Jiangcheng, who was struggling to fight against the cavalry of the Evil Spirit Legion, trying his best to delay them.

"Tiedan, let's hurry up and rush to the aid of Senior Chu, if this continues, he will be consumed alive."

Steve frowned and said anxiously to Zhao Tiedan.

Zhao Tiedan shook his head and signaled to Steve and Zhao Dingjun not to bring anyone to save Chu Jiangcheng.

It's not that Zhao Tiedan doesn't want to save Chu Jiangcheng, but there is really no way to save it, if he sends someone to support Chu Jiangcheng now, then the firepower against the emperor zombies will be reduced, and when the emperor zombies break through the griffin city, then they will lose everything.

Only when the Emperor Zombie is finished, can Zhao Tiedan raise the whole army to support Chu Jiangcheng and repel the Evil Spirit Army.

Fortunately, the gates behind Griffin City were all made of obsidian, and the imperial zombies were attacked by weak arrows, so they were in a weak state, so they did not break through the city.

The health of the Emperor Zombies is about to be exhausted, and Zhao Tiedan takes out the Blasting Gatling to help in the battle, and wants to destroy them in one fell swoop.

On the other side of the snowy region, Ye Yu and Nuo Nuo rode Xiaoying and the phoenix to the sky, they penetrated the clouds to a position with extremely low visibility above, and it was difficult for zombies and skeletons to find them.

When HIM first arranged the defense of the Biological Research Institute, he deployed the defense of the Biological Research Institute like an iron bucket, not only at the main entrance but also underground, and even the sky was constantly checked by soldiers to prevent someone from attacking from the air.

Feeling that it was time to land, Ye Yu looked at Nuno and nodded at her to signal her to act.

Nuno understood what Ye Yu meant, held a parachute, jumped off the back of the phoenix, and slowly landed towards the sky.

Ye Yu didn't take a parachute as soon as he fell down, like Nuo Nuo, and he planned to take a parachute when it was not much higher than the ground.

Seeing that he was falling too slowly, Nuno also put away his parachute and fell straight down.

When the two were about to fall to the ground, they quickly took out their parachutes and slowly descended, landing smoothly on the top of the Biological Research Institute.

Clapping her chest, Nono was glad that she had taken out her parachute in time, otherwise she would definitely fall to her death, even if the armor was protected from falling, it would not be able to withstand the damage caused by falling from such a height.

When the Evil Spirit Legion soldiers who detected the sky saw Ye Yu and Nuo Nuo, they immediately panicked, and Nuo Nuo and Ye Yu landed from behind them, so they didn't find out.

Without saying a word, he took out the meteorite and threw it over, and then rushed away with the death scythe in his hand, Ye Yu didn't give those soldiers any chance to raise the alarm, and solved them with the momentum of the autumn wind sweeping the fallen leaves.

Compared with the soldiers at the main entrance and the underground of the research institute, the soldiers at the top of the research institute were easier to deal with, and Ye Yu and Nuo Nuo solved them all by dividing them by two.

Retract the Meteorite and switch the Death Scythe to a Diamond Pickaxe, Ye Yu's efficiency enchantment Diamond Pickaxe can dig up quartz blocks in the blink of an eye.

Digging out two spaces that could accommodate people, Ye Yu took back the diamond pickaxe and switched it back to the Death Scythe, and said to Nuno, "Let's go, let's go in." ”

Nodding his head and jumping directly into the biological research institute, Ye Yu and Nuo Nuo began to install C4 bombs.

The C4 bomb was being installed, Ye Yu suddenly found something, and hurriedly asked Nuno to stop planting the C4 bomb.

"What's wrong?" Nuno stopped planting the C4 bomb and asked Ye Yu with a frown.

The reason why Ye Yu stopped planting C4 bombs was because he felt that this place did not look like a biological research institute at all, but rather like a large ore smelter.

"Old Master Chu shouldn't be wrong, right?" Ye Yu said to himself, he was worried that Chu Jiangcheng had provided the wrong information, this was not the Evil Spirit Legion's biological research institute at all, but the smelter where they smelted ore.

Looking around, Nono also felt that this place was not like a biological research institute, like an ore smelter, the temperature here was gradually rising, and the equipment around it was a smelting furnace or something.

"It's a smelter, not a biological research institute at all." Nuno was a little deflated, but in the next second, she asked Ye Yu to continue to install the C4 bomb.

"Even if it's a smelter, this smelter is not small, we can't keep it for the Evil Spirit Legion and blow it up!"

After Nuo Nuo finished speaking, Ye Yu nodded and agreed with what she said, and the two continued to install the C4 bomb.

Since they are all here, they can't come in vain, and they have to make the Evil Spirit Legion pay some price.

After installing all the C4 bombs, Ye Yu and Nuno left the interior of the smelter with cobblestones, and fled far away after reaching the top.

"The two of us should be able to run so far, right?"

Nuno asked Ye Yu, Ye Yu nodded, and felt that he could start blasting.

Take out the remote control that activates the C4 bomb, press the button of the remote control, and Ye Yu activates the C4 bombs that are placed inside the smelter.

"Boom! Rumble! Boom ......"

The C4 bombs exploded one after another, and the entire smelter was turned into ruins in an instant, and the zombies and skeleton soldiers outside the smelter hurried into the smelter to see what was going on after hearing the first explosion.

Originally, the Evil Spirit Legion soldiers stationed in the smelter thought that the smelter was just a little trouble, but what they didn't expect was that the smelter exploded entirely, and it also took the lives of their people.

The strong explosion killed all the Evil Spirit Legion soldiers stationed here, and Nuo Nuo and Ye Yu walked in the ruins of the smelter to see if they could bring back anything that could still be used.