Because they need more than 30 kinds of raw materials, and although these raw materials are all in the same area, they are far apart. The mining area is now blocked off, so they need to go to the mining area to carry them out.

The mining area already has a simple city wall, and it's not a particularly important area. Even if it's breached by the mutated lizards, they can simply abandon it and bring it back from another location.

After a busy day, Lu Yuan finally managed to install the equipment in a new city. Once in the new city, everyone got to work in a tense but orderly manner.

The grinding machine was quickly set up, and the surrounding mining equipment delivered piles of raw materials for ammunition to the inlet. After being screened, separated, and processed by the equipment, the materials were finally fed into the grinding machine.

Boom boom boom.

A loud noise came from the grinder.

Lu Yuan felt his body shaking back and forth with the mill; the noise was just too loud.

Lu Yuan finally understood why Qi Zheng had told him that once the grinding machine was started, it would definitely produce such a huge amount of material.

This noise... If the mutated lizards can't hear it, then it means they're deaf.

Sure enough, less than an hour after the grinder started running, a warning sound came from outside from the Flying Tiger.

"Reporting to Master, tens of thousands of mutated lizards have appeared outside. Should we intercept them?"

Without a second thought, Lu Yuan nodded in agreement.

So dozens of Flying Tiger robots outside began to engage in combat with the mutated lizards.

The two sides were locked in fierce combat. The mutated lizards, after all, were made of flesh and blood and were no match for the onslaught of steel and artillery shells.

Soon, tens of thousands of mutated lizards were decimated and killed on the spot, unable to reach the city walls. However, two Flying Tiger robots had run out of ammunition.

Seeing that even the Flying Tiger robot ammunition supply was running out, Lu Yuan felt even more distressed. Although they were now using it sparingly, their raw materials were not keeping up, and the consumption was still enormous, especially in the face of an attack by as many as a million mutated beasts.

Lu Yuan checked the number of remaining mutations so far, and what he saw made him feel terrible.

"Is there something wrong with Dahuang's statistics? How come there are still so many after so long? We've been fighting for two whole days and we've only killed 200,000?"

"Reporting to Master, the statistics have been confirmed to be correct; it is indeed two hundred thousand!"

"Doesn't that mean their main force is still behind?"

"Yes, Master and the others are still gathering more mutated beasts. We will face an even greater impact then. The city's ammunition reserves are already severely insufficient!"

Lu Yuan felt a headache coming on. He looked at the huge noise coming from the factory in the distance, but he didn't feel so bad.

After a moment of contemplation, he decided to send dozens more Flying Tigers to this location for defense, because he simply couldn't afford to delay any longer.

After the first batch of materials was processed at the factory, Lu Yuan immediately dispatched warships to act as cargo carriers to load the bags of dusty raw materials. The robots then transported them directly to the main urban area, where the director of the ammunition processing plant would begin production.

Soon the first batch of ammunition was produced, and Lu Yuan's expression finally improved. However, there were still more arduous tasks waiting for them.

A large-scale attack by a mutated lizard force has been detected, numbering between 300,000 and 400,000. This massive offensive will be an enormous spectacle.

The entire city is now filled with a stench of decay. The putrid liquid from the mutated lizards' dead bodies is dissipating, leaving the surrounding ground a wasteland.

The sticky liquid on the ground piled up like mountains, attracting all sorts of insects.

A tense silence fell before the great battle. Everyone knew that the upcoming battle would be even more serious, and tension was written on everyone's face.

Lu Yuan knew that everyone was both looking forward to the final battle and worried about it.

What Lu Yuan was concerned about was their ammunition supply and whether they could hold out until this moment.

He kept calling the factory workers, urging them to hurry up. Old Qi, who worked at the factory, was also a little frustrated.

He called Lu Yuan five times in one hour, each time asking whether the ammunition had been produced, showing how anxious he was.

There was nothing they could do; the equipment in the workshop was running at full speed, but it still couldn't solve their problem.

At midnight, it was completely dark, but the lights on the base stations on the city wall were all lit up, and everyone was waiting for the final battle.

No, this is not the last battle. This is the strongest battle they have fought since they first made contact, because Lu Yuan originally said that there were 300,000 mutated lizards, but now the number has reached 500,000 and is still gathering.

They had already wiped out 200,000, and now another 500,000 are coming. What a magnificent scene it would be if 500,000 lizards attacked the city together! No one could predict it.

As midnight approached, no one was sleepy. They endured the pungent, acrid smell and kept observing the distance.

Lu Yuan is currently instructing the robots in the city to deliver protective equipment to each post. This strong, sour smell can cause some damage to the human body when it enters the eyes and mouth.

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