"Lord, there is Linhai City in front of you." Wang Tao turned back to Yun Yi and said that Wang Tao was the little commander of the twenty-one guards that Yun Yi entourage.

"Okay, let's speed up our march and get some rest in the city." Yun Yi looked at the blue-gray city wall that was revealed in the distance and gave an order.

"Drive!"

The time has just entered June, and the formation of Yunyi has been completed more than three-quarters, to be more precise, most of the goals of Yunyi's trip have been completed, and the speed of returning to Yunhua County from Linhai City will be accelerated.

In the past two months, although Yunyi did not find a trace of gold mines, he found dozens of kinds of silver ore, copper ore, iron ore, lead ore, sulfur ore, saltpeter ore and other ore veins, and even Yunyi also found coal and oil.

Silver is not as valuable as gold, but silver coins are the most valuable coins commonly used by ordinary people, most of the time ordinary people use copper coins, and the possibility of using gold coins is very low, after all, the total income of ordinary people in a year is only one or two gold coins.

Yunyi found a total of three silver mines in two places, the silver ore alone is relatively low grade and does not have mining value, and the location of the two silver mines is close to Yunyi guesses that there is a medium and large silver mine here, the silver ore grade is relatively high, and it has mining value, and the total value of the silver ore is more than 1 million gold coins.

You must know that Yun's net income in a year is only more than 10,000 gold coins, and the total value of silver ore actually reaches the sum of Yun's net income in a hundred years, of course, if Yun's mining silver ore, the income obtained is not so directly calculated, and counting the various expenses required by Yun's silver mining, the huge taxes that have been paid to the empire, and the net income of Yun's can reach 500,000 gold coins when mining the entire silver mine is too much, and it takes a lot of time for such a large silver mine to be mined, with the current technology, Don't think about mining in at least a hundred years.

In another silver mining area, Yunyi discovered lead and zinc deposits, which can only be regarded as associated silver deposits.

Then a copper ore and an iron ore were discovered, which were of average grade and could be mined, and it is estimated that their reserves are sufficient for Yunyi to develop basic industries in Yunhua County.

Sulfur and saltpeter are the necessities for the preparation of gunpowder, in this world, gunpowder has also appeared, it is the group of delusional immortal Taoist alchemy was accidentally made, but the gunpowder did not attract people's attention, with sulfur and saltpeter, Yun Yi can raise his family's force to a higher level, even if the empire is in chaos, the Yun family also has some confidence to protect themselves.

Finding coal is very simple, Yunyi walked there and saw the "black stone" on the surface, there was no need to verify it, Yunyi knew that it was coal, with iron and coal, it was more likely that Yunyi would establish a basic steam industry in Yunhua County.

And the discovery of oil is very unexpected, there is a small village more than 30 miles away from Linhai City, Yunyi and his party accidentally learned in the mouth of the villagers that there is a black oil pool near the village, the smell is strange, and the black oil can also burn, the water can not be extinguished, the villagers are surprised by this, although the black oil can burn, but the smell is not good, the villagers have never used black oil, and even think that black oil will bring disaster, unwilling to approach the black oil pool, and when Yunyi came to the black oil pool, he found that this is the oil, this oil field can actually achieve self-spraying.

Oil is a good thing, Yunyi can't be used in industry in a short period of time, but during the war, oil is a terrifying killer weapon, think about the time to attack the city, sprinkle oil on the city wall, set it on fire, the enemy who is besieging the city will be burned alive, in addition, in the war, the use of oil as a means to resist the enemy is various, and even oil can be used to develop a variety of tactics, water splashes the flame, who can resist?

The places where various ore veins and products were found were marked on the map by Yunyi, and when he turned back, he had to mine them step by step, and Yunyi also found the place where the giant trees grew to standardize.

Yunhua County is close to the sea, and the wealth in the sea is not less than on the land, just because the wind and waves in the sea in this world are more and bigger than the wind and waves in the sea in Yunyi's previous life, and there are giant beasts in the sea, which will attack strange things on the sea.

Even if the sea is weird, but Yun Yi also has the idea of conquering the sea in his heart, there are many winds and waves and giant beasts in the sea, then build bigger and stronger ships, if the wooden ship can't be built, build a steel ship, if the sail power is not good, then steam power, Yun Yi will one day start to conquer the sea, to see if there is only one continent and one human race in this world.

……

In a moment, Yun Yi and his party had already come to Linhai City, compared to Yunhua County, but the scale of Linhai City in the county seat was smaller, but because of the salt industry, Linhai City was about the same prosperity as Yunhua County, and many merchants came to Linhai City to buy salt directly from the Yun family.

The Great Li Empire strictly controlled the salt industry, and only first-class nobles and imperial officials were qualified to make salt, and private individuals were not allowed to make salt, and violators were sentenced to criminal penalties.

No matter where ordinary people buy salt, the price is 10 silver a catty, whether it is Yunhua Yun's direct sale of salt to the common people, or Yun's first sale to merchants, and then the merchants sell salt, it is this price.

The price of salt is very high, but the net income that the Yun family can only get is less than 30% of the total income, and most of the income has to be handed over to the state, and a small part is used to purchase salt from the salt workers, and most of the empire's income comes from the salt industry, and 80% of the Yun's annual income comes from the salt industry. force, mastering the salt industry, mastering a huge cash cow.

So how could the Yun clan sell salt to merchants? Isn't this diluting one's own interests?

In fact, most of the salt obtained by Yun's every year has to be sold to the entire Zezhou, Yunhua County has a population of more than 90,000, and the salt consumed every year is limited, but transporting salt to other places will greatly increase the cost, some small merchants in remote areas come to buy salt and transport it back to sell, and eventually Yun's net income will increase to a certain extent, and the salt will be sold to these small merchants at a certain price, and Yun's will profit, why not do it.

The salt of the Dali Empire is basically obtained by salt workers boiling seawater in iron pots, which is very inefficient, and the salt workers who boil salt are very lucky, they have been dealing with seawater for a long time, and they have many physical diseases, and their income can only support the life of a family.

Yunyi came to Linhai City, on the one hand, he wanted to take a break in Linhai City and investigate the geographical and geological conditions of Linhai City, on the other hand, Yunyi wanted to change Yun's current salt-making process and replace it with a new salt-making process.