As soon as Liu Shu walked away, Ye Xuan from the research department ran over with a lot of design drawings in his arms, "Chief! Chief..."

Hearing Ye Xuan's voice, Luo Ji looked calm. Anyway, he must have encountered difficulties when developing the hand crossbow. Luo Ji, who had gone offline to cram in relevant knowledge before, said he was not panic at all.

As a result, when Ye Xuan came in, Luo Ji was shocked. He subconsciously rubbed his eyes, which were a little sore and painful after reading too many reports. If he read it correctly [Liancheng www.wsx5

.cn], what Xuan Ye is holding at this moment is a hand crossbow?!

"Damn!" Luo Ji was shocked. Counting the time, it was indeed a long time ago. But before, it was just a sketch. How could the sample be made so quickly?

He quickly took a deep breath, drank some water to calm down, and then heard Luo Ji speak in a relatively calm tone, "Yexuan, what is in your hand is a sample of a hand crossbow?"

"Sample?" Ye Xuan subconsciously glanced down at the crossbow in her hand, and then said in a subtle tone, "Well, probably."

"Probably? Is that so?" At this moment, Luo Ji undoubtedly felt the change in the other party's tone. After a while of understanding, a hint of understanding flashed in his eyes, and at the same time, a hint of loss flashed.

This hand crossbow is indeed not that easy to make. The one in Ye Xuan's hand is far from being called a sample, because there are still many mechanisms and structures that have not been completed, and things like firing crossbow arrows are completely impossible.

arrive.

So this thing in her hand is at best a reference object. To put it bluntly, no matter how many problems remain to be overcome, make a real object first. After having a real object as a reference, we can more directly figure out where the specific problems lie.

After that, it was undoubtedly Michelle Ye’s question time.

Luo Ji had obviously done his homework for the large number of questions that Xuan Ye threw at him, and he looked like he was talking eloquently. However, after chatting and facing Xuan Ye's imaginative thinking, each one of them

As Luo Ji became more and more cunning and asked more and more out-of-the-blue questions, the look on Luo Ji's face gradually lost its original calmness...

"But, it's scary, is this a real genius?" After finally sending Ye Xuan away, Luo Ji breathed a sigh of relief and couldn't help but wipe the cold sweat from his forehead. Under the premise that he had made up for his knowledge in this area, then

One tricky question after another made him almost unable to answer.

"leader……"

The sudden sound again made Luo Ji, who had just relaxed, become tense again. Looking back, he stared at the guard who walked in, and then asked with an annoyed look, "Who else is there?"

Here? Why am I like that today?!"

"It's Zhang Jiqiu, the captain of the fourth team of the reconnaissance team." He was already familiar with Luo Ji's character. The guard who came in to report naturally knew that their leader was not really angry. This was just a daily complaint.

, so when reporting, he was not panicked at all and seemed unusually calm.

"Zhang Ji?" Luo Ji frowned slightly when he heard the name. "Didn't he lead the fourth team and go on the expedition with Guo Jia and the others? The battle report had just been sent back. In other words, what happened?

Emergency situations?"

Thinking of this, Luo Ji said decisively, "Tell him to come in."

After getting permission, Zhang Ji came very quickly. Before Luo Ji could sit down, someone had already walked in quickly, "Zhang Ji, captain of the fourth team of the reconnaissance team, see the leader!"

"Okay, get up." Luo Ji waved his hand. Although he didn't like this, rules are rules, and there would be nothing without rules, so similar etiquette was promulgated along with the new batch of laws.

Go out, "You came back suddenly, was there an emergency?"

"Chief Qi, I came back this time to give you this." As he spoke, Zhang Ji quickly took off the animal skin bag from his waist, and then presented the contents in front of Luo Ji.

"Is this an ore?" Luo Ji looked at the contents of the animal skin package with a hint of uncertainty in his tone, because it looked just like an ordinary stone.

"Chief, please look at the fracture below."

Luo Ji nodded and turned one of the stones over in his hand. Immediately, his pupils shrank. To be honest, this really looked like an ordinary stone, but it could be seen at the fracture.

A somewhat different color.

This difference is really not obvious at all. If you throw this piece of ore into a pile of rocks, you won't be able to tell any difference at first glance, but there is no doubt that this is a piece of ore!

"Could this be..." Looking at the ore in his hand carefully, Luo Ji's heart suddenly beat faster. He didn't understand much about the ore, but there were a few types that he had studied carefully.

, and there is a kind of ore that is more consistent with the ore in front of him, "Let's go to the forging department!"

Whether it is what he thinks it is, you will know after taking it to the forging furnace of the Forging Department, smashing it and burning it!

Things that Luo Ji personally ordered were naturally the top priority. The craftsmen in the blacksmithing department decisively put down their work and set aside a forging furnace to work on the newly discovered ore.

The craftsmen in the forging department have long been very skilled in the steps of crushing the ore, then grinding it into the smallest particles, and then smelting it at high temperatures to extract the metal inside. The entire smelting was completed quickly.

Looking at the copper pot that was emitting high temperatures, Luo Ji waved his hand, instructing the craftsmen to remove the impurities floating on the surface of the metallic liquid. Then, he looked at the layer of liquid below that was like mercury flowing slowly at the bottom of the pot.

The ecstasy that swept over him instantly made Luo Ji laugh uncontrollably, "Hahaha..."

It's tin ore! He found tin ore! The melting point of tin ore is very low. After simple smelting and removing impurities, it will take on a mercury-like appearance, which is completely consistent with what he saw in front of him!

There is no doubt that his previous guess was confirmed. Tin ore is one of the few ores that he has carefully studied, because after it and pure copper are smelted together in a certain proportion, they will form a substance called

Bronze alloy!

Bronze! This is a symbol of the Bronze Age! This indicates that once the subsequent alloy smelting is successful, the civilization under his command that was still lingering on the threshold of the Bronze Age will officially take that crucial step and become a true civilization.

Bronze Civilization!!

Two hundred monthly passes will be given as an extra bonus!
Chapter completed!