Bai Jie smiled after hearing this and said to Li Yu: "Humans' sense of smell and zombies' sense of smell are different. There are some smells that humans cannot smell, but zombies can smell them.

After testing, we found that zombies are not only attracted by the smell of blood, but rather by a certain element in the blood, so we added this element.

City Lord, you can rest assured that this potion can also attract zombies, and its attraction to zombies is even more powerful!"

Li Yu thought for a while and asked: "You mean, this latest zombie attracting potion can not be smelled by humans, but it will target zombies?"

"Yes, and the color has also changed. The current color has become black." Bai Jie said.

Li Yu looked at Bai Jie and thought to himself: You are really thoughtful enough.

Such a bottle of zombie attracting potion is black in color, and there is no smell of blood through the human nose.

Others have no idea what it is, and it is extremely concealable.

So he said to them: "Yes, I am very satisfied with the potion you have developed, but three pills are not enough. Let's make three more pills."

Madi asked with some worry: "If you make so many, if you use them all at once, the power may be a bit scary..."

Bai Jie also said: "Teacher Ma is right. The main reason is that since the No. 2 zombie potion, this potion has extremely strong adhesion and is difficult to evaporate. If we are not careful, it can easily cause huge damage."

harm.

To tell you the truth, the two of us were a little frightened when we were making the No. 3 zombie attracting potion."

Li Yu thought for a while and then said: "I understand your concerns, but the situation outside is very tense now. If we don't have something more ruthless in our hands, sooner or later we will be eaten down to the bone.

As for you, just make the remaining three potions, and don’t let anyone else know about making this, okay?”

Bai Jie quickly said: "Understand, we went to another scientific research laboratory to make this potion alone, and even Xiaolan and the others don't know about it."

Li Yu felt relieved when he heard what she said.

Currently, the only people who can make this potion are Ma Di and Bai Jie, and their cooperation is needed to make it.

If the recipe for this potion is spread, the entire base will be doomed.

Therefore, Li Yu firmly controlled Ma Di and Bai Jie.

Let them live in the inner city.

"Okay, give me the three prepared potions later." Li Yu said to Bai Jie.

Bai Jie nodded and said, "Okay, I'll give it to you later."

"Well, then you go back and do your work." Li Yu said to the two of them.

Madi nodded and excused himself.

Bai Jie walked behind and gave Li Yu a wink as she closed the door.

Li Yu waited here for about ten minutes, and then Bai Jie came in carrying a white box.

The white box is custom-made by the maintenance factory. The outer layer is aluminum alloy, and some soft materials are used inside to prevent shock.

Bai Jie carefully placed the box on the table, then opened the box and took out a potion from inside.

I saw that this potion was the size of a mineral water bottle, a full 500 ml.

The whole thing is as Bai Jie said, the color is black.

Bai Jie pulled away the outer protective sheath, and Li Yu reached out to take it and take a closer look.

Tut tut praised: "This is twice the dose. I'm afraid this is three or four times the dose, right?"

Bai Jie said with a smile: "It's not that exaggerated. It's just that the glass bottle is relatively long, which means it only has two to three times the dosage. By the way, Mr. Li, according to Ma Di and I's calculations, the radiation range of this medicine will be larger than

The previous one was about twice as strong.”

This chapter is not over yet, please click on the next page to continue reading the exciting content! Li Yu widened his eyes when he heard this and said: "In other words, can it attract zombies within a range of two hundred kilometers?"

"Under heavy rain, it will be stronger!" Bai Jie explained.

Li Yu smiled and put the glass bottle in the protective cover and put it back into the silver box.

He closed the box and said to Bai Jie, "Performing well."

Bai Jie's face was full of smiles, and her eyes were almost blurry. She leaned over and said in Li Yu's ear: "I want a reward~"

Li Yu waved his hand and patted Bai Jie on the back.

The ripples tremble.

"Don't make trouble. It's broad daylight. I have something to do. I'll do it another day."

After saying that, he opened the door ruthlessly and walked out.

Bai Jie looked at Li Yu's leaving figure and glanced resentfully.

However, Li Yu, who was carrying the zombie attracting potion box, immediately returned to the inner city, and then sealed the potion box directly into the strongest room in the underground warehouse.

Only he has the key to this room.

The medicine box was even put into a safe that was purchased from the bank for zero yuan.

If you want to steal this potion, you must first be able to enter the inner city.

Secondly, you need to be able to enter the underground warehouse, then open the door, and finally open the safe.

There is basically no chance of it being stolen.

After putting the medicine away, Li Yu closed the safe, closed the door, and left the underground warehouse.

Time is like water.

It was evening in a blink of an eye.

Jackal and the others returned successfully in the helicopter.

After two trips of transportation, the oil reserves in the base increased, and a lot of food and cold-proof materials were sent to the Oil City.

But when they came back in the evening, they obviously felt that the temperature had dropped a lot.

The weather was cloudy, and although the sun was still hanging in the sky, they no longer had to wear helmets or worry about damage from solar radiation.

Solar activity is weakening much faster than they thought.

The sun's rays have completely recovered, but the temperature has dropped extremely quickly.

.......
Chapter completed!