The black mist that floated through the air faded away at a speed visible to the naked eye, and the air in the area became fresh and clean.

And the black "little thing", like seeing something that frightened it, crawled on the ground and trembled, and if you didn't look closely, you couldn't find it at all.

"Don't be afraid, it's fine." Zhang Yuan reached out and sucked the little thing over.

"W-This is the 'little thing'?" Huang Zihan's eyes were shining, because the little thing was very small, like a miniature version of the silkworm, except that it was black, and the silkworm was white.

"It's called Yin Worm, and it's still in early childhood, and when it grows up, it's really no exaggeration to say that it's as fast as lightning." Zhang Yuan said with some affection, "The lethality of the Yin insect itself is not very good, but because of its small size and fast speed, it can often achieve unexpected effects when fighting against people. ”

"It's so cute, it's a pity, if only you could listen to me." Huang Zihan lost the road.

"It's easy." Zhang Yuan smiled, "Give me a drop of your blood." ”

"Okay." Although Huang Zihan was puzzled, he still bit his finger, and then handed his finger to Zhang Yuan.

This kind of thing is estimated to be difficult for other girls, but there is no pressure at all for Huang Zihan, who is a dragon tooth warrior.

Zhang Yuan stretched out his sword finger and wiped it on Huang Zihan's finger, and then used Huang Zihan's blood to draw an invisible rune and hit the Yin Worm's body, and the Yin Worm had almost no power to resist, so he signed a master-servant contract with Huang Zihan.

"Huh." Huang Zihan exclaimed, "I feel that it can understand my words, no, not only, it seems that I can also understand its thoughts, it's amazing!" ”

"Zihan, I'll give you this little thing, but you have to promise me one condition." Zhang Yuan said at this time.

"Brother Zhang, you say, no matter how difficult it is, I will definitely work hard to complete it." Huang Zihan said with a serious face.

"You are with me, what you see, what you think is incredible that has happened to me, you are not allowed to spread it, including your parents and your comrades-in-arms." Zhang Yuan said solemnly.

"I'll keep it a secret, Brother Zhang, believe me!" Huang Zihan said solemnly.

"Okay." Zhang Yuan smiled and threw the Yin Worm to Huang Zihan, "I've sent it to you, remember that this little thing should also be kept secret, don't leak it easily, it can save your life at a critical moment." ”

"Thank you, Brother Zhang!" Huang Zihan looked at the yin worm in his palm and looked happy, "Brother Zhang, let's give it a name, shall we?" ”

"Let's call it a little thing." Zhang Yuan said casually.

"Okay, little thing, little thing......" Huang Zihan lay on Zhang Yuan's back and played.

"Zihan, you rest here, I'll go to the front to collect some medicine, and I'll be back soon." With that, Zhang Yuan put Huang Zihan on a big stone and sat down, and then without waiting for Huang Zihan to answer, he turned around and rushed out quickly.

Knowing Zhang Yuan's power, Huang Zihan didn't worry about Zhang Yuan's safety, and sat there teasing the little things.

Zhang Yuan entered through a hidden cave and went directly to the basement, where the old man who had been practicing in retreat had died, because the Yin Worm had been subdued by Zhang Yuan and had injured his foundation.

The birth method of the Yin Worm is very peculiar, it belongs to neither mammals nor non-mammals, that is, those who cultivate the Ghost Method, in the process of cultivation, they have a chance to give birth to the Natal Ghost Treasure Yin Worm, but the probability is extremely low, maybe only one in a million.

And those who have cultivated the natal yin worm will often have immeasurable future achievements.

According to Zhang Yuan's guess, this old man probably didn't even know that he had cultivated the natal yin worm, because the birth time of the yin worm just now was only more than a week, and the old man's time of retreat was at least a month.

During the retreat, interference is the most taboo, let alone someone breaking his natal yin worm, so this old man's life is so funny that even Zhang Yuan can't help but feel funny.

Let's say that the old man is unlucky, and he has cultivated the natal yin worm again.

Let's say that the old man is lucky, and he just met Zhang Yuan as soon as he cultivated the natal yin worm.

Zhang Yuan walked around the basement and didn't find anything valuable, but there was a letter in the old man's bag, saying that he would meet at the Blue Blood Peak of the Hengduan Mountains two months later to discuss the distribution of treasures.

Zhang Yuan put away the letter, planning to take a look at it when he had time, and then returned to the ground and rushed back the same way with Huang Zihan on his back.

"Brother Zhang, let me ask you something, you killed those four people, did you find anything from them?" On the way, Huang Zihan suddenly asked.

"There's a military document, do you want it?" Zhang Yuan said that that thing was useless to him, but he faintly felt that it was not simple, as an immortal cultivator, the sixth sense could not be ignored. However, since Huang Zihan recognizes him as his eldest brother, if Huang Zihan wants it, he will naturally give it.

"I ......" Huang Zihan hesitated, but still said, "Brother Zhang, keep it for yourself, it's a good thing, but you remember not to let others know, otherwise you will get into trouble, a big disaster!" ”

"Oh?" Zhang Yuan was curious.

"I don't know the specifics, but I know that many countries, including China, are looking for it, so its value can no longer be measured by money. Of course, if you want to exchange money, you will definitely be able to exchange it for an immeasurable amount of wealth, but I hope that if there is a real day, Brother Zhang can exchange it with our country, because I heard my father say that if this thing falls into the hands of other countries, it will pose a huge threat to our country. ”

"I see, thank you, Zihan." Zhang Yuan nodded solemnly, he can't help but be imprudent, the current era is the era of science and technology, in other words, whoever stands at the top of military science and technology will be able to gain the dominance of the world.

Some of today's hot weapons, such as an atomic bomb, can destroy a city, and if this military information surpasses the military technology of today's time, the consequences are ......

"But, Zihan, if that information is useful to the country, why don't we hand it in?" Zhang Yuan is curious, the left and right can be exchanged for money, why not now?

"Because my dad said that the content of that information is very likely to surpass the current level of technology, and it will be about 50 years from now that the earth will be able to reach the level of technology in the data. And the information in your hand is only a part, so even if it is handed over to the state, the state will not be able to develop anything.

If, I mean, if our country gets another part of the information, and it happens that the information in your hand can be completed, then the value of your information is very high, and you can exchange it for more money.

The reason why I asked you to keep it secret is because many countries are looking for this information, and secondly, because it comes from an extremely powerful organization, which is active all over the world, so mysterious that even the United States has nothing to do with it. ”

Huang Zihan said like a military advisor.

Zhang Yuan was funny in his heart, this sister didn't take it in vain.

"By the way, Brother Zhang, after you go back in a while, if our captain asks you about this, you will say that you didn't see it." Huang Zihan said again, as if he was turning his elbow out.

"Got it." Zhang Yuan replied and quickened his pace.

From a distance, seeing Zhang Yuan running with Huang Zihan on his back, Huang Zihan's comrades-in-arms quickly greeted him.

"Zihan, where have you been?" The captain said with a worried look on his face.

"I'll take Brother Zhang to collect medicine." Huang Zihan jumped off Zhang Yuan's back and said with a little blush.

"Zihan, your injuries are healed?" The round-chin woman said in surprise.

"Well, Brother Zhang helped me heal." Huang Zihan said.

Hearing this, everyone sighed, such a brilliant medical skill is really a hidden master.

"Thank you, Brother Zhang Yuan." The captain took the initiative to extend his hand.

"You're welcome." Zhang Yuan shook hands with this person and said with a smile.

"Brother Zhang Yuan, I have something to ask you, if there is anything presumptuous, please forgive me." The captain said hesitantly, his tone was very polite, there was no way, his strength was not as good as others, if he could beat Zhang Yuan, he would definitely shoot directly and use strong means to find out the truth.

"Please." Zhang Yuan said calmly, knowing that this person was going to ask for that information.

"I want to ask, did you find anything from them after you killed those four people?" When he said this, the captain's eyes were fixed on the change in the expression on Zhang Yuan's face.

It's a pity that what he saw was an ancient well without waves, and it was as calm as water.

"There was a change of clothes, and some military equipment, such as daggers and guns, and tens of thousands of cash, and I took the cash, and I burned the rest of the things on the spot." Zhang Yuan said lightly.

"Didn't you find a single piece of information?" The captain said unwillingly.

"Nope." Zhang Yuan shook his head.

"Really?" The man who admired Huang Zihan's face sank, and he asked, even holding a pistol in one hand.

"What do you mean, I swallowed the information from your mouth?" Zhang Yuan took a step forward, his voice was cold, revealing murderous intent.