A castle needed some supporting facilities.
One of them was a city wall!
In ancient times, walls were built around castles.
The quality of the wall represented the strength and defense of the castle!
Crossbows could even be placed on top of the wall to destroy an enemy without personally taking any damage!
For a war that did not include tanks, cannons, and missiles, having a city wall was undoubtedly important!
Xu Hang was determined.
To make a city wall, what was needed most were stones!
Shaping huge stones into bricks was feasible, but it would consume too much time and energy!
Moreover, he needed to figure out a way for the stones to stick firmly together!
Without a doubt, lime was his best choice.
Lime was a type of air-hardened inorganic cementing material with calcium oxide as the main component. It was a product with high content of calcium carbonates such as limestone, dolomite, chalk, and shells that had been calcined at 1600 °F - 2000 °F. Lime was the first cementing material used by humans.
Fortunately, Xu Hang had not forgotten the knowledge that he had learned from the real world!
Limestone could be obtained from the cave where the dragons were located.
Xu Hang had done some construction jobs before, so he was somewhat familiar with the process.
Next, he needed a building that could be calcined at a high temperature.
[ Earth Kiln Requirements: 300 stones and 100 clays. Function: To heat at high temperatures ]
[ Build earth kiln? ]
[ Yes ] [ No ]
Obviously, Xu Hang clicked [ Yes ].
Before this, he had asked Hill to collect the limestones.
A few minutes later, the kiln was completed.
Hill had also returned.
[ Limestone +500 ]
[ Iron Ore +20 ]
'Iron ore?
'Does this mean that I can make iron weapons?
'What an unexpected surprise!
'But first, I need to make some lime.'
Xu Hang recalled his previous experience and showed the farmers how to make lime.
However, the process did not go smoothly.
After all, he was not a professional. So, he failed a number of times.
However, he finally succeeded after consuming 200 pieces of limestone.
[ System Announcement: Congratulations to Lord Xu Hang for unlocking the infrastructure construction formula 'Lime'. You have received 300 pieces of limestone as a reward. ]
[ Kid, what are you doing? Are you trying to build a house? ]
[ Are you planning to play house? What a joke. ]
[ Did you build yourself a car and house here because you did not have them in the real world? ]
[ Hahahahaha! ]
[ System Announcement: Congratulations to Lord Sun Yu for unlocking the gunpowder recipe. You have received 20 iron ore as a reward. ]
The world chat channel fell silent.
They began to check the ranking list.
Sun Yu was just a nobody who ranked in the thousands.
However, she had managed to unlock gunpowder.
Gunpowder was one of the four great inventions of China. In the military, it was mainly used as the propellant for guns, rockets, missiles, and other driving devices. It was an important form of ammunition.
In other words, this person was now capable of making guns. At the very least, she could use the gunpowder to make a few clay grenades, bombs, and so on. She would be invincible during the Beast Tide.
Regardless, there was a prerequisite before she could obtain the recipes. She needed to have enough gunpowder.
[ No way, you've made gunpowder? ]
[ Boss, tell me the formula, I'm willing to pay a high price for it. ]
[ I'm willing to pay 800 gold. ]
[ I'll pay 1000 gold. ]
[ Boss, can you take me as your underling? As long as you help me survive the Beast Tide, I'll do whatever you want. I'll even wear whatever you want. ]
[ Is this woman crazy? As long as someone had the advantage, she would suck up to them. ]
[ She's like a dog. ]
[ Look at the gender, okay? Sun Yu is a woman. ]
[ Hahahahaha. ]
The world chat channel was filled with requests for Sun Yu.
However, everyone began to realize something.
The so-called combat strength ranking list was nothing but bullsh*t.
It only took account of the soldiers' combat strength. Other important details were not considered.
For example, Xu Hang, who ranked last on the list, managed to beat Zhang Tao and his group with a few traps.
Additionally, Zhang Tao was ranked 53rd on the list at that time.
Now, this low-ranking woman called Sun Yu had developed gunpowder.
As long as she played smart, she could even beat those who were on top of the list.
In this chaotic world, strength reigned supreme.
However, there were many different forms of strength.
[ Damn Zhang Wuji, return me my wood. ]
[ That's right. I want a refund. ]
[ Me too! ]
Those who had paid for Zhang Wuji's advice began to realize that they had been cheated.
[ Zhang Wuji: I said that I would teach you how to rank higher on the leaderboards. There are no lies in that! ]
[ Zhang Wuji: Look at me. I'm also developing my military. ]
[ What's the use of having soldiers? They can be easily blown away by gunpowder. ]
[ Should we think of a way to mess with him? ]
[ Zhang Wuji: You want to attack me? Fine, I'll show you what I can do! ]
[ System Announcement: Congratulations to Lord Zhang Wuji for unlocking the sulfuric acid recipe. You have received 10
[ Awesome. So he's not just all talk. ]
[ Are we heading towards a scientific era in this world? ]
[ It's all my fault for not paying attention in class. I regret it now. ]
The world chat channel was as lively as ever.
More and more people were trying to improve their overall strength other than through the military.
Just like in modern society, everyone worked things out in various methods such as through financial resources, intelligence, hard work, or connections.
Everyone was different.
Xu Hang felt that he was quite lucky. He did not merely rely on the strength of his farmers. Otherwise, he would probably be defeated.
He might not even know the cause of his own death.
In general, everyone came to an understanding.
It would be fine as long as you had an ability. The type of ability did not matter. You just needed to hone it.
This world was different. It was new and undeveloped. There were many possibilities and more chances of being successful.
If you sat and did nothing, then only death awaits.