A large number of people began to gather to resist the price gouging of oxygen on the black market.

However, most people still followed the established procedure and queued up at the front.

Lu Yuan could clearly see that the protesters started to panic when they realized that no one was really supporting them.

Some people eventually left the queue and rejoined it.

Everyone knows that without oxygen, one dies. Rather than causing trouble, it's better to accept reality.

Lu Yuan would never do something so foolish; he stood silently in line among the crowd.

Carrying oxygen cylinders, he took one step forward and another followed by one. Finally, when it was his turn, Lu Yuan placed four oxygen cylinders in front of him.

The operator then held the bottle to the air inlet and gently pressed it. Immediately, an oxygen cylinder was filled and the green light on it lit up, indicating that the oxygen was full.

The other party then handed the bottle to Lu Yuan, who took out the corresponding amount of money and placed it on the table. However, just as Lu Yuan was about to leave, a question suddenly popped into his mind. He turned to look at the sales clerk and asked, "Are we going to have another war?"

The other person paused slightly, pondering Lu Yuan's words, and looked up at him: "Yeah, that's right, there might be a war. It's because of the war that the price of oxygen is going up. Those troublemakers, don't be like him, they're all doing stupid things."

"Are the Earthlings coming? Will we be in danger?"

Lu Yuan felt his heart pounding all the way there. In his memory, you could usually hear gunfire before a battle.

They felt safer back then, but today the price of oxygen has suddenly skyrocketed, and Lu Yuan has a vague sense of foreboding.

The other party smiled helplessly: "That's up to fate."

After counting the remaining gold dust, he said, "War is beyond our control. Anyway, we can't leave for the time being, so let's all wait and see."

If they really do attack our side, the military will probably have to think twice, since we're a major drain on their resources, and a large portion of their revenue comes from us!

Hearing such an ambiguous answer, Lu Yuan had no choice but to turn around and leave.

When he returned to his residence with the oxygen cylinder, his neighbors next door couldn't sit still in their homes.

They gathered in a shady spot and chatted, their whispered conversation seeming somewhat mysterious.

"I heard there's no oxygen, and prices are going to skyrocket. My fellow Earthlings and I are about to have another big battle with the enemy's resistance!"

"Yes, the resistance forces are quite strong. If a fight broke out, they could probably fight the Earthlings to a draw!"

"I'm really afraid those shells will land on our side. Last time, a single shell killed or wounded a couple hundred people on our side, and the Earthlings didn't even utter a sound. They deserve to die!"

"Although we are the weakest and most helpless civilians, forget it, let's not think about it anymore. Let's pack up more oxygen later. Maybe if the war breaks out, our oxygen supply will even be cut off!"

"Who can argue with that? Oxygen is expensive, oxygen cylinders are even more expensive, and they can't be stored for long periods of time. It's such a hassle!"

Several people had already started getting up to use oxygen. When they saw Lu Yuan leading the oxygen tank over, they greeted him and asked about the price for the day.

I heard that the price of oxygen is still soaring, and it might go up by another five gold coins this afternoon. Everyone had a worried look on their faces.

"Oh dear, the price is going up again this afternoon! What are we waiting for? Let's hurry up and go, or we might not even be able to get the ten-yuan one!"

So the group of people went back to their lodgings, grabbed more oxygen cylinders, and headed towards the oxygen supply station.

Lu Yuan didn't actually need to buy oxygen. He already had a small oxygen generator in the dimensional space, so he didn't need to worry about a lack of oxygen. Going out to buy oxygen was just a cover.

After returning to her residence, Anna heard footsteps outside and quickly came downstairs. She breathed a sigh of relief when she saw Lu Yuan.

Lu Yuan looked at the dagger in his hand and shook his head with a wry smile.

"It's pretty safe here for now, so why do you always carry a dagger upstairs?"

Anna bit her lip and then her head; she still didn't trust the two bodyguards patrolling outside.

"Okay, as long as you feel safe. By the way, the oxygen has been brought over. There might be a war outside, so it'll be quite dangerous out there these next few days. We need to be prepared for battle!"

Upon hearing that war was imminent, Anna felt a surge of anxiety and rushed downstairs, asking, "Are the Earthlings going to invade?"

"Yes, the Earthlings are about to invade, but no warships have arrived yet. I reckon they should be here soon. The price of oxygen is going up every hour, it's practically skyrocketing!"

Anna held a small package in her hand. When she opened it, she found grains of gold dust inside, which were the result of her collection over the past few days.

"We should still have quite a bit of gold sand left! It should be enough for our needs!"

Lu Yuan was surprised to find that the other party had started accumulating gold sand.

"Oh, I didn't know you'd been saving money all this time!"

"Yeah, I saved some money when we went to buy oxygen together. Sometimes the price goes down and sometimes I feel like you gave me too much, so I'll keep this money for when we buy oxygen in the future!"

Lu Yuan smiled slightly and shook his head, wondering if a business opportunity had popped into his mind.

“We’ve almost used up our sand. I’m worried we’ll need it even more when we get to Shanghai. We probably won’t be short of oxygen, but sand is essential for us, so I have an idea!”

After saying that, Lu Yuan took out the portable oxygen concentrator he had prepared in advance from his backpack and placed it in front of him.

"What is this? Is this an oxygen concentrator?"

When Anna saw the oxygen concentrator, a look of horror appeared on her face.

"Yes, that's right. The price of oxygen outside has skyrocketed these past two days. I reckon the supply will probably run out soon. We'll see how things go with the oxygen generator. If the people in the neighborhood are really short of oxygen, then we'll start selling it!"

Anna nodded; this was definitely a great idea to make money.

However, that can only happen after the black market cuts off supplies; otherwise, openly selling them would definitely provoke dissatisfaction from the black market.