Coming to the future world again, the crossing location is still the last city, Homeland City.

Homestead City is one of the lines of defense against alien invasions, and it is often attacked, but because of people's determination and courage, it has not fallen so far, like a cactus standing in the desert, tenacious and full of life.

Zhao Shun already knew a little about the city, and walked towards the ordnance store with a familiar car.

The boss didn't change people, it was still the uncle last time, he still recognized Zhao Shun, and said hello: "Long time no see, where have you been during this time?" I haven't seen you since the last invasion. ”

Zhao Shun casually lied: "I went to other cities, and I just came back today." ”

"I see, what do you want to buy today?"

Zhao Shun took off the silver bracelet and handed it to the owner of the ordnance shop: "This thing can't be used, you can help me take a look." ”

The owner of the armory shop checked it and said with a smile: "It's just that there is no energy, just change the battery." ”

"Do you sell batteries here?"

"Of course, there are batteries of any type, and this device uses small batteries, and I have more than that."

"How do you sell small batteries?"

"It's not expensive, one hundred federal coins a piece."

Zhao Shun looked at the package, there are more than seven hundred left after buying the potential stimulation device last time, and the fare for a trip to the sub-world is expensive, in order not to come often, Zhao Shun bought seven small batteries in one go, and felt that it was not enough, and planned to pick up some rags and sell them for some money later, at least he had to make up a group to go back.

Under the guidance of the owner of the armory shop, Zhao Shun learned how to replace the battery, which is actually very simple, just pick up a small lid, take out the metal battery the size of a pill inside, and install a new one.

With a new battery, the energy storage of the potential stimulation device has changed from 0/200 to 200/200, and it can be used again.

"Boss, I have something to ask you for."

"What's the matter?"

"Can you tell me where the person who invented this device lives? I want to pay him a visit. ”

"No problem, the person who invented this device is called Zhou Yuanfeng, and he lives at No. 16 Lihua Street."

After saying thank you, Zhao Shun went to Pear Blossom Street.

Ewha Street is a very remote street, the houses are old and dilapidated, and under the shade of high-rise buildings, the sun does not shine here, and it is shrouded in darkness.

I easily found No. 16, a wooden house with a small open space in front of the door, and all kinds of parts were piled up in the open space, like a garbage dump.

Zhao Shun rang the doorbell, and after a while, a middle-aged man with stains on his work clothes and hair like a chicken coop opened the door and walked out.

He stood at the door of his house like this, talking to Zhao Shun across the open space.

"Who are you?"

"My name is Zhao Shun, and I'm the one who bought your potential stimulation device."

"Is there something wrong?"

"Can you let me in first? I have something to ask you. ”

Zhou Yuanfeng took out the remote control from his trouser pocket and pressed it on a blue button, and the iron fence in front of Zhao Shun automatically pushed inward, making way for him to enter and exit.

Walking through the open space full of parts, Zhao Shun came to the door of the wooden house.

Zhou Yuanfeng turned his head towards the house: "Come in." ”

When the two entered the house, Zhou Yuanfeng closed the door, and he led Zhao Shun to walk in the messy house, where parts were also piled up, which was very crowded, and some places could only pass sideways.

In what looked like a living room, Zhou Yuanfeng stopped, squatted on the ground to disassemble a broken mechanical beast, and faced Zhao Shun with his back.

"I'm busy, please tell me if there's anything you want." Zhou Yuanfeng said without looking back.

"That's right, after I bought your potential stimulation device, I think it's very useful, but the cooldown time is a bit long, and I want to ask if there is a way to make the time shorter."

"Yes, yes, as long as the chip inside is replaced with a better one, the cooldown time will naturally be shorter than now."

Zhao Shun said happily: "Really? Help me. ”

The potential stimulation device is easy to use, but the cooldown time is too long, and you have to wait ten minutes if you use it once, which greatly affects Zhao Shun's speed of leveling up and taking the boss, so I took advantage of this time to buy a battery to see if there is a way to shorten the cooldown time, but I didn't have much hope, but who knew that it really could, which made him quite surprised.

"I can help you, but the most important thing is missing, the chip."

"Don't you have one here?" Zhao Shun asked, pointing to the mountain of parts.

"There are chips, but there is nothing better than the device, the device you bought is already the chip with the best level of human science and technology, to find a better one, I'm afraid only aliens have it."

"You mean you have to get the chip from the aliens?"

"Yes, the aliens have an ultra-cold chip in their hands, which was developed for combat drones, and if this chip is replaced, the cooldown time of the potential stimulation device will be cut in half."

If the cooldown of the Potential Activation Device could really be cut in half, then it would only take five minutes like Demon Transfiguration, and the two skills would be perfectly matched, reaching one use in five minutes.

Zhao Shun was moved and asked, "Where can I get this ultra-cold chip?" ”

"As I said, this is an alien equipped on a combat drone, and if you want to get this kind of chip, you naturally have to find a drone."

During the last alien invasion, Zhao Shun had seen some alien drones in the sky, and remembered that several of them were shot down, just outside the city, thinking of this, Zhao Shun said goodbye to Zhou Yuanfeng and rushed out of the city.

After the last battle, the outside of the city was even more barren, and there were countless craters on the ground, just like the surface of the moon, full of craters.

There were wreckage everywhere, there were machines, there were humans, there were no plants on the scorched earth, only flies flying around the carrion.

Zhao Shun is looking for alien combat drones, while picking up available parts, this mission is not only to get ultra-cold chips, but also to buy enough batteries, picking up rags is the safest and most familiar way to make money, kill two birds with one stone, why not.

In the distance, a wing-like part was erected on the ground, and Zhao Shun ran over with a happy face.

But when he arrived at the place, the smile on his face disappeared, and it was indeed a drone on the ground, but the damage was very serious, the entire fuselage was scattered, and it was burned by fire, and the whole body was charred black, and in some places it would turn into ashes and drift away with the wind.

Zhao Shun didn't give up, found the console at the head of the machine, rummaged for a while, and found a black box that was split in half, and there was indeed a fingernail-sized chip inserted in the box, but unfortunately it was burnt.

Pulling out the chip and putting it in his hand, the information text displayed by the system finally made Zhao Shun die.

Ultra-cold chip (scrapped) worth 0 Federated Coins.

Zhao Shun did not give up because of this, threw away the useless chip in his hand, and continued to look for the drone in the ruins.