Mythical Qin: I, Gao Yao, will never be a eunuch!

Gao Yao then placed the jade pendant on a stone beside him, picked up another stone and smashed it heavily on the jade pendant.

"Bang..."

After a dull sound, Gao Yao picked up the stone and took a look at the smashed tiger-shaped jade pendant. This surprised Gao Yao. At this time, the tiger-shaped jade pendant did not seem to be broken at all, but there were some scratches on it. This scene shocked Gao Yao and also aroused his temper. He used several stones to try to destroy the tiger-shaped jade pendant again. However, after trying for half an hour, the tiger-shaped jade pendant had some signs of wear and tear, but there was no sign of cracking. This surprised Gao Yao. He did not expect that this thing was so strong.

After thinking for a while, Gao Yao returned to the army with his men and continued to rush towards the northern border. The mission could not be delayed. Nearly five days had passed and they were about to approach the northern border. Along the way, Gao Yao had been trying to destroy the tiger-shaped jade pendant but had not succeeded. He had tried everything, including throwing stones, chopping with knives and axes, but he could not destroy the tiger-shaped jade pendant itself.

Seeing that he was about to hand over the corvée labor, Gao Yao had been about to give up the idea, but Erniu's silly words made Gao Yao think differently again.

Because Erniu was Gao Yao's personal soldier, he naturally saw Gao Yao trying every possible way to destroy the tiger-shaped jade pendant, so he said, why not just burn it with fire? This directly reminded Gao Yao, and while ordering the troops to continue advancing, Gao Yao took a dozen personal soldiers and went straight to the nearby county town, directly found a blacksmith shop, and spent a little money to temporarily requisition the blacksmith shop.

"Erniu, you are responsible for pulling the fire."

"Here"

The blacksmith shops in the Qin Dynasty already had something similar to a bellows, but the design was different, that is, it was just to keep the fire going. In fact, the Qin Dynasty already had the rudiments of iron smelting technology, but it was not developed.

"You two, go get some water from the well, the cooler the better, and bring it back to fill this barrel."

"Here"

At this time, Gao Yao did not hesitate to command everyone to start working. Gao Yao personally clamped the jade pendant with a clamp and put it into the fire to roast it continuously. At the same time, he ordered people to continuously add firewood. There was no other way because coal mines had not been used in this era, so he could only use this method.

As Erniu continued to pull the bellows, the fire burned very vigorously, and Gao Yao put the tiger-shaped jade pendant into the flames and roasted it repeatedly. After a period of time, he quickly put it into cold water to cool it down rapidly. What Gao Yao used now was the most scientific method. Although the tiger-shaped jade pendant was very special, it was just a jade pendant after all.

Most jade can withstand a temperature of about 600°C. When the temperature reaches this value, the structure and color of the jade remain basically stable and will not change significantly. However, when the temperature exceeds 600°C, the internal structure of the jade begins to change, and the molecular structure of tremolite is destroyed, causing the hardness and glossiness of the Hetian jade to decrease. High temperature will also expand the tiny cracks inside the jade, and may even cause the jade to explode. Of course, this refers to the temperature it can withstand. To reach the melting temperature, it generally needs to reach above 1200°C.

The temperature of burning firewood is about 600 to 800 degrees Celsius. With the continuous addition of firewood and the blowing of the bellows, the temperature can basically be maintained above 700 degrees Celsius, which is enough for Gao Yao. When the jade that has been calcined for a certain period of time is directly placed in cold water, the huge temperature difference will cause a large number of cracks inside, which can easily lead to the breakage of the jade. This is similar to the fact that when starting to crush stones, some larger stones are first calcined with a strong fire and then poured with a large amount of cold water. This is also a typical effect of thermal expansion and contraction.

After taking it out of the cold water, he quickly struck it to destroy it. This cycle continued for two hours. When Gao Yao took the tiger-shaped jade pendant out of the cold water again, he finally smiled. At this time, the surface of the tiger-shaped jade pendant had begun to expand and crack irregularly, which showed that his method was still very effective.

Gao Yao also continued to use the hammer to hit the tiger-shaped jade pendant.

"Ding, ding, ding..."

After knocking four or five times in a row, a slight cracking sound was heard, and the tiger-shaped jade pendant suddenly shattered into countless pieces under Gao Yao's hammer. In Gao Yao's shocked eyes, the shattered pieces quickly turned into powder-like existence, and disappeared completely in the blink of an eye when the wind blew.

(Ding, destroy important props in the world, significantly change the direction of the plot, and get a bonus portable space)

Just when Gao Yao was still confused about everything in front of him, the system prompt sounded again in his mind. This sudden system prompt sound made Gao Yao a little stunned for a moment. The tiger-shaped jade pendant turned out to be an important world prop, and now it was destroyed by himself.

Moreover, the portable space rewarded by this person is a magical skill that countless time travelers dream of. However, Gao Yao was not in a hurry to check the portable space. Instead, he asked people to pack up their things and left the blacksmith shop directly, and then caught up with the main force.

It was not until they set up camp and rested that Gao Yao had time to open his personal space to check. This check made Gao Yao so excited that he almost couldn't sleep all night.

Being able to collect things from the outside into the space at any time and take them out at any time is just the most basic skill. In the space, there are ten acres of fertile land. In the portable space, Gao Yao does not need to do anything. He only needs to click on planting and harvesting to harvest a lot of food. It only takes one tenth of the time to plant outside, and he does not need to pay attention to any weather factors to harvest the best yield per acre.

As for whether this portable space can be upgraded, Gao Yao is not sure yet. At the same time, Gao Yao is not sure whether the things planted in the space can be taken out for a second planting. However, Gao Yao chose to plant sweet potatoes as soon as possible. There is no doubt about this. The yield of sweet potatoes per mu is basically between 5000 and 8000 kilograms. If the system space has a perfect harvest, tens of thousands of kilograms is not a problem.

And according to the calculation of the system space, basically one batch can mature in 800 days, and one tenth of the time, that is, ten days, can produce at least 2400 catties of sweet potatoes. In addition, there is a difference in weight between ancient and modern times. In fact, it is equivalent to harvesting at least dan of food and grass every ten days, and at least dan in a month.

Although this number is a drop in the bucket compared to the tens of thousands of tons of grain and grass, it does not require any manual work from anyone, and all you have to do is wait quietly for the food to mature and be harvested.