Let's suffer a little longer, fellow Blue Star folks.

The old man nodded expressionlessly and tapped his fingers lightly on the table.

"It's too much. This long sword can only be used by people below the intermediate level of the Yellow Rank. The maximum weight is 110 taels."

"110 taels, plus the long sword outside." Tang Yi still did not hesitate.

The old man pondered for a moment.

"Okay, deal."

Chapter 16 What is this? A cannon barrel?

On the banks of the Yunshan River, outside a dilapidated hut, there are several piles of logs of various sizes.

"Seriously, these logs are fine for building houses, but if they're used for fortifications, if the inferior demons are really as fierce as Brother Shuizi said, then if they all charge at me, the whole wall will probably collapse."

Ah Tui held a simple stone axe in his hand, looked at the piles of wood, and then shook his head slightly.

"What should we do then?" Yu Shui asked.

"Actually, under the current conditions, I suggest using rammed earth walls." Ah Tui looked at the woods surrounding the gathering place.

"I noticed this afternoon when Ah Tui and I were chopping trees. The soil around here is loess, so we can use local materials."

He made a rough estimate and concluded that if he used materials such as straw, lime and sand to make rammed earth and bamboo strips as wall frames, he could build a small wall within a week.

Although the earth wall is slightly weaker at this point because it has not been reinforced yet, it is still much stronger than directly sticking wood into the ground.

Moreover, the earth wall can be further widened later, and a corridor similar to the ancient city wall can be made on it.

Attacking from top to bottom in this way will not only greatly increase the lethality, but also make it less likely for them to suffer casualties.

After all, it costs 50 Alliance Coins to resurrect once.

He felt sad just thinking about it.

"What is a rammed earth wall?" the traitor asked.

"Just think of it as an ancient city wall, or the earthen buildings of Fujian Province," Ah Tui explained simply. "These were all built using rammed earth technology."

"That seems alright."

Yu Shui searched for the images of these two buildings in his mind.

"Can Ah Tui build this rammed earth wall?"

"What a coincidence."

Ah Tui clenched his right fist and tapped his chest lightly.

"Me! Ah Tui! My undergraduate thesis was about this!"

"I'm currently a graduate student and have woven countless models of this kind by hand, so I have extensive practical experience."

"Bullfrog."

Yu Shui patted Ah Tui's shoulder with excitement.

"The organization needs talents like you!"

With the help of professional talents, Yu Shui and A Tui began emergency consultations.

In view of the current specific situation, the two decided on the spot to change their thinking and use this rammed earth wall to build defensive fortifications for the gathering place.

"So are we going to look for some loess now?" Erwuzai rubbed his hands and was eager to try.

For someone like him who grew up in the city, this opportunity to play in the mud openly is truly a rare opportunity.

"Yes, but not really." Ah Tui looked around. "It would be best if we could use loess with better quality. This way, the earth wall we build will be stronger."

"Let's look around to see if there's any other place with loess besides this place."

……

While the players were dispersing to look for high-quality loess, Tang Yi, who was still in Yunhe Town, was walking back to Cai Cheng's home very cautiously, carrying a large sack on his back.

There are a full 110 taels of Qi Stone in here.

It may not sound like a lot, but if you exchange them all for copper coins, there will be more than 10,000 coins. In Yunhe Town, this amount is enough to provide a family of three with food and clothing for several years.

Ensure that wealth is not exposed.

In this world a hundred years after the war, it has become a basic principle.

When Tang Yi was wandering in the northwest region, he saw more than once that people had their wives and children separated and their families destroyed because of unexpected wealth.

"One hundred taels of Qi Stone, when put into the Qi Transformation Device, will yield one hundred units of 'Qi'. The remaining ten taels will be used to buy some supplies."

Looking at the sack on the ground, Tang Yi nodded slightly.

"Yeah, just right."

In this way, the current main task will be completed, and there will be enough money for a short period of time.

However, selling weapons is not a long-term solution.

We still have to think of some way to make money steadily.

Suddenly, there was a noise at the door.

Tang Yi looked back and saw Cai Cheng pushing open the door and walking in carrying a medicine basket.

As soon as he returned to the room, he immediately closed the door, and then took out a piece of paper covered with handwriting from his arms.

"I brought back the list. There may be one or two missing, but most of the patients should be on it."

"Also, some people can't afford to go to the hospital when they're sick, or they're serving soldiers. Their bodies will be handled by the guards after they die, so the city guards should have a similar list, but I can't get it."

"Okay, thank you for your hard work."

Tang Yi quickly stood up, took the list, and glanced at it casually.

Very good, he didn't know any of them.

"Do you have a general idea of ​​the people here?" Tang Yi looked back at Cai Cheng and asked, "For example, their family members, their previous jobs, etc."

"I'm afraid that won't work." Cai Cheng put down the medicine basket and shook his head.

After all, he is just a doctor, responsible only for curing illnesses and saving lives, and he would not go out of his way to inquire about such information.

"It's okay, thank you very much." Tang Yi nodded slightly.

The reason why he asked Cai Cheng for this list was to confirm whether the sudden appearance of the strange disease was related to his "assassination" of Xia Keyu's "father".

If this strange disease is caused by the three great demons in the city...

Oh no, there are two now.

If this is the method they use to eliminate the Xia family, then many people on this list should be related to the Xia family.

Tang Yi put the list away.

When the time comes, I'll show this list to Xia Keyu, and she should be able to find some clues.

……

"Hey! Come on, brother! I think I found something good!"

The traitor ran back to the camp and said to the two people who were studying the loess.

"What good stuff?"

"It's not clear yet, but from the part that has been dug out so far, it looks like a metal pipe!"

Erwuzai described it very excitedly.

"Could I have unearthed some relics?"

"remains?"

Hearing these two words, Yu Shui and A Tui immediately became alert.

Everyone knows that sometimes working yourself to death is not as good as inheriting some of the wealth left by your predecessors.

What’s more, this is the end of the world.

Who knows if someone hid their treasure here decades ago.

"Hurry, hurry, take us there!"

The two men immediately threw away the simple earth wall in their hands, and then followed the traitor as fast as they could to the big pit he had just dug.

The big pit is not far from the Yunshan River.

Erwuzai immediately jumped into the pit first, then pointed at a silvery-white bulge exposed on the edge of the pit, his tone very excited.

"Look, this is it. I touched it, and it feels exactly like metal in the real world."

Yu Shui and A Tui squatted at the edge of the pit, stretched their heads, and stared at the bulge with wide eyes.

“It really seems to be made of metal.”

"Then start digging!"

……

The thing was not buried very deep, and it looked like it was buried here by someone many years ago.

The three of them dug hard, and soon they could see what the thing looked like.

This is a metal cylinder, about six meters long. The diameter of the cross section is not wide, only about ten centimeters, but it is hollow in the middle and there are some patterns engraved inside whose purpose is unknown.

"What is this?"

Ah Tui sat on the ground, his face full of confusion.

"A pipe carrying something? Or a supporting column for a building?"

For a moment, Yu Shui was not sure what the round tube was used for.

The traitor looked around the metal cylinder and finally said hesitantly:

"This... I feel a bit like a cannon barrel."

Chapter 17: Ordinary military fan?

"What? A gun barrel?"

"What gun barrel??"

Ah Tui and Yu Shui both looked at Er Wu Zai in surprise.

"It's the barrel of a cannon."

Erwuzai reached out and touched the surface of the metal tube, then knocked it gently. Listening to the crisp echoes inside, an expression of excitement gradually appeared on his face.

"Six meters long, with a caliber of approximately 130mm, it meets the standards for a heavy tank gun barrel."

"Also, real-life gun barrels have rifling on the inside. This metal tube also has some patterns inside. Perhaps they are used to increase the range and stability of the ammunition."

Having said that, Erwuzai raised his head and looked at A Tui and Yu Shui excitedly.

"Think about it, if we could really build a cannon, then the task of building fortifications would be overfulfilled!"

"Forehead……"

A Tui and Yu Shui looked at each other.

"Are there really cannons in this world?"

"It's said to be a cyber cultivation, it's possible that he doesn't even have a cannon!" Erwuzai stood up again, his tone becoming a little high.

"And now it's very simple to verify my hypothesis. If this round tube is really a gun barrel, then there must be other parts buried underneath!"

"How about we continue digging?"

Erwuzai raised his shovel with great enthusiasm.

Yu Shui and A Tui looked at each other, and then nodded vigorously together.

After all, this is a cannon!

Anyway, it is much more attractive than rammed earth walls.

……