"D-class weapons, priced at 500 gray crystals, include tanks, large-caliber artillery, missiles, warplanes, helicopters, ships and other heavy conventional weapons, conventional energy weapons, electrolyte liquid hydrogen technology, super battery technology, cutting-edge engine manufacturing materials, high-efficiency solar panels, and so on. Pen "Fun" Pavilion www.biquge.info"

"C-level weapons, the price is 2000 gray crystals, including alloy weapons, controllable nuclear fusion technology, laser weapons, intelligent robots with an intelligence coefficient of more than 0.95, intelligent housekeeper E3, artificial intelligence code writing mode, etc., for new material weapons."

The dazzling array of high-tech weapons, Zhang Yifeng's drooling made Zhang Yifeng drool, and he couldn't wait to change everything, and the next B-level weapons made Zhang Yifeng feel incredible.

"B-level weapons, tentatively priced at 10,000 gray crystals, crystal nucleus energy bioenergy weapons, God of War level suits (including flying armor, laser swords, energy swords, laser weapons), crystal energy weapons, crystal energy robots, etc."

"Class A weapons, the price is undecided, and they are not for public sale, which include high-yield nuclear bombs, space-based weapons, anti-gravity technology, ghost ships, and more."

"S and weapons, secrecy."

"SS-Class Ultimate Weapon, Confidential."

"Damn, there are so many high-tech equipment in Shenjing Base City, why are human beings still like this?" Zhang Yifeng asked in disbelief.

Mina emerged and explained softly: "High-tech weapons, need a scientific and technological foundation as support, the more high-tech things, the longer the research cycle, the master don't look at the number of weapons on the list There are many types, in fact, many B-level and above weapons are only conceptual weapons, or have just entered the state of research and development, and even Shenjing Base City is only partially equipped with C-level weapons." ”

"I see, so what should I exchange?" Zhang Yifeng asked, he really didn't know how to choose, because there were too many.

"Mina suggests that the master choose C-level weapons, and it is not recommended to choose weapons below D-level, because with the evolution of mutants, the power of conventional weapons is becoming more and more limited, especially heavy weapons such as tank artillery, which require cannonball fuel, and the consumption is too large, judging from the current situation of Satellite City No. 1, it can't support it for long, but C-level weapons are different, powerful, light and flexible, and consume less energy, such as alloy war knives, Seraphic M1 laser guns, and intelligent housekeeper E3, other scientific and technological weapons, the master is temporarily useless, Moreover, the owner has access to data chips, and these technologies can be obtained by Mina to a large extent, and the owner does not have to waste materials to exchange them. Mina said.

Zhang Yifeng thought about it, according to Mina, 50 tons of rice read the data storage chip of the Shenjing Academy of Sciences once, and the remaining 50 tons of rice, according to the price of 1 white crystal/kg of rice, is worth 50,000 white crystals, that is, 500,000 gray crystals, and I don't know where this woman heard the price, and she didn't even give Zhang Yifeng the opportunity to open his mouth.

A C-level weapon and equipment is worth 2000 gray crystals, a total of 250 pieces can be exchanged, Zhang Yifeng's idea is to give priority to equipping the No. 1 Guard, the squadron leader, the squad leader, and the deputy captain must be equipped with alloy combat knives, laser guns and E3, which play the role of deterrence and communication, and the rest can be used as reward resources.

"Master, the order list is sent, and Zero replied that the laser gun will not be sold for the time being, because there are mutants besieging the city in Shenjing Base City, and the situation in Shenjing is turbulent, and the laser gun production line cannot be expanded for the time being." Mina said.

"Damn, why don't you sell the list?" Zhang Yifeng was very annoyed, this woman was very wary of him, the laser gun appeared, the advantages of the third-level evolutionary, the fourth-level evolutionary, and even the fifth-level evolutionary were gone, once Zhang Yifeng had this weapon in his hand, it would inevitably cause a larger range of riots, and he could sweep through the entire Cloud City Base City.

In fact, the nursery rhyme did not deceive Zhang Yifeng, the laser gun production line in Shenjing Base City was destroyed by mutants, and it is still being repaired, and there is no extra exchange for him.

"Then revise the exchange list, E3 and Alloy Knives are half each." Zhang Yifeng said helplessly.

"Yes, master."

Finalizing the exchange list, Zhang Yifeng asked Leng Han to convene a meeting of all the squad leaders, deputy captains and senior leaders of the No. 1 Guard, with only one task, that is, to transport 100 tons of rice to the Yuncheng scientific research base before ten o'clock tomorrow morning.

The leaders of the first guard squad were confused, came in a hurry, left in a hurry, made a defense plan in advance, and arranged the relevant personnel.

Early the next morning, except for the first and second squads, which were responsible for defending Satellite City No. 1, the remaining six squads, a total of 180 second-level evolutionaries, carried rice and quietly disappeared into the occupied area.

The transportation of 100 tons of rice took an hour, and the powerful strength and endurance of the evolutionary were vividly displayed at this moment, looking at the rice stacked on the warehouse of the Cloud City Scientific Research Base, Zhang Yifeng smiled with satisfaction.

Now, it's just waiting for the nursery rhymes to arrive.

"Yi Feng, where is this place?" Liu Qiang asked curiously.

Hearing him ask, the members of the nearby No. 1 Guard secretly pricked up their ears to eavesdrop.

Zhang Yifeng glanced at them, and he didn't plan to hide it, and he couldn't hide it, so he immediately said: "This used to be the scientific research branch of the Shenjing Academy of Sciences. ”

Shenkyo Academy of Sciences!

Because Zhang Yifeng's voice was so loud that more than 100 team members heard it, their bodies shook in unison, their faces were full of surprise and abruptness, and they had great curiosity and awe about this mysterious institution that continued to appear in the news after the advent of the end times and was constantly passed on by word of mouth among the survivors.

At the same time, it also proves one thing, his boss Zhang Yifeng does have dealings with the big people in Shenjing Base City.

The team members who thought they knew the truth were full of excitement and honor!

"Look, what is it in the sky?"

At 9:59 a.m., an evolutionary exclamation suddenly sounded, and he accidentally saw something in the sky, which was a small black dot, flying towards the scientific research base at an extremely terrifying speed.

The flight speed that broke through the speed of sound, even more than ten times the speed of sound, appeared in the sky above everyone in the blink of an eye, casting a huge shadow and enveloping Zhang Yifeng and them.

"Is this a flying saucer?" Zhang Yifeng muttered to himself with a sluggish face.

Not only him, but the members of the No. 1 Guard behind him were shocked.

The ghost-level spaceship, suspended in mid-air ten meters above the ground, motionless, without sound, like an ancient giant beast, entrenched in the void, that kind of silent depression, as if pressing a mountain in Zhang Yifeng's heart.

At this time, a door cracked open at the bottom of the spaceship, and a vertical elevator fell, and the familiar appearance of the nursery rhyme appeared in Zhang Yifeng's eyes, her expression was serious, her eyes were sharp, and she swept over the people present, like a savior descending from the sky, with a thin momentum all over her body, which could compete with heaven and earth.

Everyone couldn't help but bend down slightly.