I have a supermarket system, shocking the whole court

The only stressful part is when the collection date approaches.

Speaking of this, Ning Ning picked up the badge again and looked at it carefully. Qiufen needed to hand over 30,000 taels of gold to the court.

Thirty thousand taels of gold is equivalent to 3000 kilograms. The good news is that the purity of Daliang gold ingots is very low, with a gold content of only about 10%.

Strictly speaking, Ning Ning only needs to find 300 kilograms of gold and exchange it for 3000 kilograms.

However, according to the mine's usual mining records, the maximum output per month is only about 200-500 kilograms. The reason for such a large fluctuation is mainly due to the difficulty in excavation. The shallow layers have almost been turned over, and only underground can be dug.

But digging underground is not easy. What is dug out is just rough rock, which needs to be washed and refined. In short, 3000 kilograms is not so easy to handle.

It would have been fine if there hadn't been any delay in the past two months.

Now that it has been delayed for such a long time, it is really troublesome to catch up with the progress.

Considering that this is her first job after taking office, she has to complete it well no matter what and cannot let it become a hindrance for her.

Ning Ning had no choice but to take the initiative. These days, Ning Ning went to the mines in person and observed all the open-air and underground mining sites.

Then I finally discovered the reason why people are inefficient at work.

First of all, it’s a matter of manpower.

The scale of blasting a mountain with explosives or even drills is definitely different from that of blasting a mountain with manpower.

Furthermore, the tools they have are limited in what they can do.

Although Shang Wenqi's sword could cut through iron like mud, Ning Ning discovered that this was only an exception for the Qingyun Left Cavalry, or in other words, only those specially supplied to the royal family would be so powerful.

But for ordinary people, they only use white cast iron.

Here we need to popularize some knowledge.

As we all know, in ancient times, salt, iron, tea, etc. were generally controlled by the imperial court, and ordinary people were not allowed to operate these businesses.

Although there were many iron shops in the city, the specifications of the iron shops and the products they produced were strictly controlled by the imperial court.

Ordinary iron shops can only make farm tools, sickles and other daily ironware. They are not allowed to produce weapons.

As for this iron, it is the most common type, commonly known as white cast iron.

This type of iron lacks some elements such as carbon and silicon, and is very brittle. Anything slightly hard will break it.

The gray cast iron produced by later generations will have much better toughness and hardness.

When she saw Shang Wenqi's weapons, she thought that gray cast iron was already widely used in Daliang. However, after an on-site inspection, she found that this was not the case.

Even Shang Wenqi's knife is not made of gray iron, but black iron, meteorite or the like. In short, it is a rare and precious type of iron ore.

So, the question is, should she improve the efficiency of the iron tools in the quarry?

Ning Ning thought about it seriously.

If we turn it into a business and do business with the imperial court, theoretically we should be able to make some money.

But if you really want to do this, you have to plan carefully. After all, you have to deceive Shang Wenqi and the people in the court.

Otherwise, according to the nature of the imperial court, if they knew that the prescription was provided by her, they would definitely ask her to provide it for free.

She can be generous and do good things, but will the court also be generous enough to give her 2000 kilograms of pure gold?

Obviously not.

Since it was not an equal transaction, Ning Ning decided not to discuss it for now and talk about it when there was a chance.

Of course, besides poorly used tools and limited manpower, there is another biggest problem that causes low efficiency in mining operations.

That is inaccurate positioning.

Ning Ning discovered that the mining site they selected was not based on scientific evidence, such as monitoring showing a high gold content or any other significant data.

All they looked at was whether there was any money plant growing in the area.

Yes, you read that right, it is that magical.

There is indeed a saying in the gold mining world that there is a kind of grass in the world that only grows on soil with high metal content. As long as there are large areas of fertile money grass in a place, there must be mines in this place.

Gold diggers never get tired of this saying and have indeed dug up gold in places where money grass grows.

However, this statement is too general.

Not to mention the failed cases, let's just talk about the successful cases. You should know that the places where Money Plant appears range from a few hundred square meters to hundreds of miles in radius.

Given such a vast area, where should we set the point? Do we really have to pry open the entire 500-li area? Obviously, it is impossible.

Therefore, relying on this method to find dragon points not only wastes manpower and material resources, but may not be very effective.

Ning Ning can do something about this.

She had bought a robot before that could detect whether there was gold within a radius of 100 miles.

If you want to improve the efficiency of gold mining in a short period of time, it seems that it is faster to use high technology.

Find a mine with abundant gold, and then dig it up. Not to mention 30,000 taels of gold, even 300,000 should be no problem.

Ning Ning did what she said and secretly asked the system to deploy the robot when no one was paying attention.

The robot then started its journey up the mountain to search for treasure.

Ning Ning was waiting at the base camp for the robot to return triumphantly.

About two days later, the robot really fed back the news that there was a large area of ​​gold ore 1500 meters down about 25 meters away from here.

There are probably several thousand tons of gold ore, which is ten times the amount of the mine they are currently mining.

Don’t think this data is exaggerated. What was discovered was just gold ore, which needs to be refined to obtain pure gold.

And this ratio is very, very scary. On the whole, about 30 grams of pure gold can be extracted from every ton of gold ore.

Of course, this is according to modern purification methods.

According to Daliang's rough purification, one ton of gold ore can produce 300-500 grams, which is about one kilogram or even more.

These several thousand tons are enough to cope with the imperial court's levies.

Even her 2000 kilograms of pure gold had a place to go.

Ning Ning was filled with excitement. As long as she dug this mine, she could immediately connect to the interstellar mall, and curing her feet would no longer be a dream!

Thinking of this, Ning Ning no longer hesitated and started digging new mines.

However, people are not very enthusiastic about digging new mines.

After all, they already had 7 mining areas at that time. Although the output was not high, production had not been interrupted.

If you invest in a new mine before all the old mines are mined, it would be a waste of the old mines.

But it is too late to recruit miners again. Not to mention skill training, just the background check takes time.

The miners here are not death row prisoners, but ordinary people from Minzhou and even surrounding cities.

However, if these ordinary people want to come in and work as miners, they must do a good investigation and find someone in the village to act as a guarantor.

After all, it is related to gold. If it is stolen, even if he runs away, his family, clan and neighbors will suffer.

Therefore, under normal circumstances, the miners here dare not steal.

But recruiting also requires a complicated process.