Chess against the opponent is the most desirable thing for all masters, and gradually Zhou Yan seems to have no idea where to start, and the battle between the two in front of him almost completely subverts his understanding of martial arts.

Du Feng's moves and styles are like flowing water, perfect without the slightest possibility of cracking, while the other side Zuo Chuan's attack is more like a storm, causing people to be killed, and every punch is incomparably lethal.

"Yes, yes, I didn't expect there to be someone who can compete with the test subject, haha Zuochuan don't kill this person, I'm useful!" the white-robed Japanese smiled a little cruelly, his eyes were full of fanaticism at this time!

Zhou Yan looked at Du Feng, and the doubts in his eyes were even heavier.

"Roar!" a loud roar recalled.

The muscles on Zuo Chuan's body are changing, this is the first time he has seen such a difficult opponent, the guy in front of him seems to know how to attack next, always dissolving his own tricks, it seems that he is pressing him to fight, but in fact, he knows his helplessness, and finally this anger from "weak" broke out.

The muscles on Zuo Chuan's body swelled again, "Poof!" A mouthful of blood spurted out of Zuo Chuan's mouth.

"Oh no! The test subject is going to run away?" The white-robed man stared at Zuo Chuan's expanding body with wide eyes, and hurriedly ran backwards as if he was frightened, and disappeared into the passage in the blink of an eye.

Don't run! Zhou Yan shouted to catch up, but Zuo Chuan blocked the way first.

"All of you are going to die!" Zuo Chuan's hoarse voice was like a demon of hell: "You!

After Zuo Chuan finished speaking, his muscles had swelled to an incredible extent, and his hideous appearance was almost like a licker in Resident Evil.

"Boom!" The amazing arm strength made Zuo Chuan like King Kong.

At this time, Zuo Chuan seemed to have undergone a qualitative change, Du Feng kicked Zuo Chuan in the back of the neck, if it was an ordinary person, this kick could kill him directly, but at this time, it was like kicking on steel, and it could not cause any harm to Zuo Chuan at all.

"Unexpectedly, Little Japan's biochemical experiments have already reached this level!" Du Feng secretly exclaimed in his heart.

"Roar!" Zuo Chuan continued to let out a beastly roar.

"CAO" Du Feng dodged this blow. Looking at the huge depression that had been smashed into the ground, he knew that even if it was himself, this blow would hurt him a lot.

However, Du Feng soon discovered something.

"If you're human, it might be a real headache right now, but since you're a beast, it doesn't matter if you're strong!"

At this time, Zuo Chuan is not wrong to become stronger, but his previous body style is gradually disappearing, saying that he relies on brute force to fight again, let alone relying on instinct, animal instinct to fight back against Du Feng.

"If you give up your qualifications to be a human being, even if you become the most ferocious beast, then you can't fight humans. Du Feng turned over: "Zhou Yan give me the gun!"

No matter how Zhou Yan said, he was also the person who used to be the most elite unit of the Republic, and he had never seen it on any occasion, and now it was not enough to scare Zuo Chuan, a "beast". Without hesitation, he quickly changed his pistol and threw it to Du Feng.

"Okay!" Du Feng smiled: "Next, let you see, how humans hunt!"

With a gun in his hand, Du Feng strode towards Zuo Chuan.

With a false blow, Du Feng flashed and came behind Zuo Chuan, and when Zuo Chuan turned back again, he found that there was an extra metal thing in front of him, and the brain occupied by the killing couldn't react at all at this time.

"Roar!" Zuo Chuan opened his big mouth and roared, his inhuman face was extremely hideous.

"You won't be resurrected this time!" Du Feng was waiting for this moment.

"Buzz, buzz, buzz。。。。 Du Feng was not stingy, and fired a shuttle of bullets in a row, and even at the end of the day, he did not hesitate to convert the electric energy into an electric beam bullet and shoot it together.

Suddenly, Zuo Chuan's head exploded, and the electromagnetic bullet was definitely not something that his flesh and blood could bear, not to mention the electric beams behind him, which scorched his shattered head.

"Bah!" Zuo Chuan's huge body fell to the ground, losing his head, blood bursting out of his chest, and the entire floor was crimson.

"It's really troublesome!" Du Feng looked at the corpse on the ground, picked up a gun again, and fired three more shots at the corpse's chest.

"Dead?" Zhou Yan said as he looked at Zuo Chuan, who fell to the ground.

Du Feng nodded, looked at Zuo Chuan, who was a little strange, and said, "Let's go, that little Japanese should be the researcher here, and he must be caught." ”

"Boom!" the sound of gas leaking came from a distance, and a cloud of yellowish gas was exiting from the corridor, slowly spreading throughout the corridor like leaking steam.

"Warning, the poison gas is exceeded!" Du Feng's individual system immediately prompted.

"Gas! Damn, these people are crazy. Du Feng looked at the yellow smoke scattered everywhere, at this time he already knew the composition of the poisonous gas, this kind of gas with garlic, and mustard smell is only one kind, that is, dichlorodiethyl sulfide, that is, the infamous "mustard poison gas!"

This thing belongs to rotting poisonous gas, as long as the concentration of 0.2 mg/L can poison people, and can invade the human body through air breathing, the most terrifying thing is that this poisonous gas has been studied since the last century, and there is no special medicine to cure it, if these gases leak in a city like the East China Sea, then the impact is absolutely terrifying!

"Bah!" Hearing the voice, Du Feng realized that Zhou Yan had already fallen.

"Zhou Yan!" Du Feng immediately rushed over, only to find that Zhou Yan already had some faint symptoms of poisoning.

Du Feng's strengthened body can ensure that he will not be eroded by this poisonous gas in a short period of time, but Zhou Yan's strengthening has not been completed, if it is divided into upper, middle and lower levels, Du Feng has already reached the medium, while Zhou Yan has just begun to contact strengthening. The toxicity resistance itself is very weak.

Of course, this kind of weakness is far from being comparable to ordinary people, and this level of poison gas can already kill instantly.

"How is it?" Du Feng helped Zhou Yan up.

"Liu Feng!" Zhou Yan said after putting on his mask.

Du Feng slowly turned his head and looked at Zhou Yan.

"I guess that's you. Zhou Yan's eyes were very sharp when he looked at Du Feng.

Looking down at the suspended screen on the watch, Du Feng said: "Yes, no, go chase first, and then listen to my explanation." ”