The Tianhong Yuan Mine is deep underground, with only one entrance and exit, which is easy to defend but difficult to attack. It has been managed by the three major families of Linghu like an iron barrel. In history, other forces have wanted to seize this Yuan Mine, but they have been saved by the three major families.

The huge bottomless cave entrance is filled with cold air, which is the cold air deep underground.

Whoosh!

A ball of Qi fell from the sky and suddenly fell into the depths of the cave entrance.

The hole is not pitch black, and there are many luminous crystals inlaid. In order to ensure the oxygen in the underground mine, the use of torches is prohibited below.

Fortunately, the luminous crystals are extremely cheap, so there are countless crystals under the entire entrance of the cave, which makes the light inside not dim.

The entrance of this huge shaft is several hundred long and deep, almost all of which are made of a kind of hard boulder, and a huge spiral staircase extending from the opening to the bottom of the hole. The staircase is very wide, and guard posts, arrow towers, and even special stone chambers are established on every floor to live and guard.

This deep cave in the shaft has at least a thousand warriors from three major families.

The bottom of the cave is very wide, with a square radius of thousands of steps. The three major families have their own bases and do not interfere with each other.

The qi fell into the Jiang family's base, which was a crisscrossing stone chamber passage, and many Jiang family warriors were stationed.

"Fu Jie, Sang Wu, didn't expect that you two are Ao Lian and Jiu Bai?"

Two old men, one tall and one short, came up with a group of guards.

"You Xie, Blade, this time there is something wrong, so we are the two of us. Okay, don't talk nonsense, hand over quickly, you will know what's going on after you go back, but I can warn you not to get along with that old thing Jiang Chenglong, otherwise I, Sang Wuke, would be polite."

Grandma Sang Wu waved her hand.

The two old men also knew the character of Sang Wu's grandma. Although they were a little strange, they didn't care. They immediately told the situation in the Yuan Mine.

"The collection difficulty of the area we control now has increased a lot. The output in the second half of the year is probably going to be reduced. We are relieved. We will rely on you two next."

After the two old men finished speaking, they seemed to breathe a sigh of relief. After all, the Yuan Mine is of great importance and the burden is heavy. Now they are finally going to rotate, so they naturally feel relieved. Then the two of them didn't say much, and suddenly flew up and rushed to the shaft passage.

"Jiang Chen, according to the mining standards of our Jiang family, you must submit ten yuan of low-grade yuan mines every month. Once it is less, you must make up for it next month. Otherwise, there will be no salary. Of course, if you exceed ten yuan, the miner can get a value of one thousandth of the Yuanshi above the standard salary. If you are lucky, you will discover the medium-grade yuan stone and increase the reward level by one level, and you can get two thousand people. Since you are in the punishment period, the monthly standard will be increased by one hundred yuan mines. Of course, there are basic salary and rewards, so you have to work harder, which is a difficult task."

The Great Elder of Fujie patted Jiang Chen on the shoulder and said with a smile.

Jiang Chen nodded.

Jiang Yuelian and the other two are normal miners' standards.

"I'll show you Yuan Shi's appearance. You probably haven't seen it before."

At this time, Grandma Sang Wu took out a few Yuan stones.

"This is the lowest-grade Yuan stone, which contains the least and the most complex."

She said, pointing to a few crystals about the size of longans and different colors.

These crystals look very shiny and smooth, but if you look closely, you will find that there are still many dark patterns on it, which are the influence of the magazine's vitality.

The more advanced the Yuan stone, the purer it is.

The intermediate Yuan stone is only two-thirds of the size of the lower grade, very round, like the most beautiful gem.

Grandma Sang Wu also took a top-grade Yuan stone, which was only the size of a mung bean. It looked extremely dazzling, like a dream, and there were even light waves flowing inside.

"This top-grade Yuan stone is very rare. So far, our Yuan mine has only been dug up dozens of yuan, basically only a little larger. This top-grade Yuan stone can be used to directly absorb and practice. Okay, you have also seen Yuan stone, so start digging now! Good luck."

Grandma Sang Wu waved her hand.

Jiang Chen and the other two nodded, so they featured miners' tools, a miner's uniform, a lighting helmet, a miner's hoe, and a back bag.

The four of them went deep into the Yuan mine channel of the Jiang family. The main channel was very wide, and a large number of luminous crystals were embedded on the stone walls, forming a bright channel with no end. Moreover, around this channel, there were many direct channels connected, forming a fork like a spider web, with miners coming in and out along the way.

There are also many mine trucks coming in and out under the promotion of a large number of mine slaves. These mine trucks are used to pull waste stones. After all, a large number of stones will be formed during collection and must be transported out.

So in the Yuan Mine, besides miners, they are mine slaves.

Miners are all composed of warriors, while mine slaves either have low cultivation or ordinary people. They are all real coolies, the hardest, the lowest salary, and some even have no personal freedom.

"Let the four of us separate here!"

Jiang Yuelian suddenly said.

In Yuan Mine, it is inefficient to gather together and excavate Yuan stones.

Jiang Chen and the other two nodded, so after the four of them made an appointment for the next meeting, they each walked into a passage.

"Little Wolf, come out!"

Jiang Chen directly summoned the little wolf. The little wolf has changed a lot now, extremely fierce and extremely divine.

Although it is only at the third level of the True Qi Realm, with its pseudo-spiritual beast, the True Qi has already possessed spirituality, almost as high as the level one of the high-level martial artists. Moreover, as its cultivation level increases, its two innate magical powers are even more terrifying.

As for Xiaoluan, she is even stronger, and she definitely surpasses Xiaolang in terms of strength.

As soon as the little wolf appeared, all the miners and slaves he encountered along the way could not dodge and was extremely awe-inspiring, because this means that Jiang Chen is an extremely noble soul.

Jiang Chen rode the little wolf deep and unobstructed. After walking for more than ten minutes, he passed one fork in one after another and finally reached the end. There were no miners at the end of the fork, which was just right.

"It's just a passage, which is more than ten miles long. I don't know how many such passages are in the Yuan Mine. I'm afraid that a huge maze passage has been formed in the depths of the ground."

Jiang Chen sighed in his heart.

"Little Wolf, use true qi to detect the Yuan stone."

Jiang Chen gave the order to the little wolf.

So, a stream of true energy suddenly flew into the little wolf's body, as if it was spiritual, and they all drilled into the rocks.

This rock layer is very hard, and only warriors who reach the internal Qi realm can dig with special miners' hoes.

But for Jiang Chen, this is nothing.

"Master, the true energy has penetrated twenty feet deep, and only three low-grade Yuan stones have been found."

The little wolf replied.

"The density of this Yuan stone is really small. Okay, dig it out!"

Jiang Chen shook his head.

The little wolf's true energy suddenly exploded, and the hard rocks were shattered one after another. A large scattered rock in front became gravels. At the same time, three low-grade Yuan stones were swept out by the true energy and fell into Jiang Chen's hands.

He put Yuanshi into his back bag and Jiang Chen asked the little wolf to continue.

So, with the hard work of the little wolf, the lower-grade Yuan stones were excavated one by one.

However, Jiang Chen found that the density of Yuanshi is really not very low. Sometimes he can only get one piece at a time, or sometimes not. Moreover, when using true qi to dig, the consumption is extremely large. The little wolf is considered to have strong true qi. After only a dozen times, his body of true qi is consumed.

Jiang Chen directly replenished the little wolf's true energy with the divine beast breeding system.

"No wonder the efficiency is so low. If it is all due to the expert's use of true qi, I am afraid that the collection efficiency will not be very high, and it will consume too much true qi. No wonder the monthly standard is only ten yuan. The little wolf's strength is equivalent to that of a senior martial artist. If there is no divine beast breeding system, it is impossible to dig so many stones in such a short time. They must recover the consumed true qi and maybe they can use pills, but this is too much of a loss. If you rely on self-recovery, you are afraid that you can discover it once or twice a day."

Jiang Chen understood.

In fact, this mining method is also a disadvantage for Jiang Chen, because he must consume a lot of soul power. If the divine beast breeding system could always absorb the soul power in the void and soul test tower, it would not be so wasteful to kill him.

One day passed, and Jiang Chen had more than a hundred low-grade Yuanshi on his hand. In other words, he had completed the task for more than a month. If others knew about it, they would probably be extremely shocked.

But who would think he was so luxurious? And there was also a divine artifact that could instantly replenish true qi, a divine beast breeding system. If you know others, even if you use elixirs, there would be a refining and transformation process!

"Master, I found a medium-grade Yuanshi, oh, more than one, but two more."

The little wolf has worked as an excavator for a day and has been replaced by Xiaoluan.

"Oh. Dig it out quickly."

Jiang Chen was shocked. In this mine, it was pitch black and it was really depressing. In addition to being fresh at the beginning, he quickly became bored and lonely.

As Xiaoluan's true energy shook, the rocks shattered, and three pea-sized precious jade stones flew out.

"There are three medium-grade pieces at one time. Have I encountered the rich ore vein?"

Jiang Chen was a little surprised. Generally speaking, a large number of medium-grade or above Yuan stones appeared at one time, which means there were rich ore veins around it. However, the probability was very low and it was difficult to encounter. Tianhongyuan Mine had been mined for hundreds of years, and the rich ore veins were only mined for more than a dozen times.

After several consecutive excavations, several medium-grade Yuan stones were unearthed. As for the lower-grade Yuan stones, there were more than 100, and the density was much larger than before.

Jiang Chen quickly found the little wolf and mined the two war beasts together.

After some mining, Jiang Chen finally determined that this was a rich ore vein, and the specific direction was also determined. More and more medium-grade Yuan stones were mined, and the total amount was thirty or forty yuan.

With so many medium-grade Yuan stones, according to the normal output, all miners collected so many attacks within one month.

As for the lower-grade Yuan stone, it totals more than a thousand yuan.

How long has it been?

Just three days.

However, Jiang Chen found that the deeper the deeper the mining, the more difficult it is, and the rocks in this area become harder.

"Master, I found a top-grade Yuanshi."

Suddenly, the little wolf let out a surprise, and then a top-grade Yuan stone the size of a mung bean flew out of the gravel.

Jiang Chen was also excited. He was so lucky that he even got the best quality Yuanshi.

According to the exchange ratio of Yuan stones, a medium-grade Yuan stone is equivalent to ten low-grade, and a high-grade Yuan stone is equivalent to one hundred medium-grade Yuan stones. That is to say, a high-grade Yuan stone is comparable to a thousand low-grade Yuan stones. This is just the exchange ratio in the Yuan mine. If you really take it outside to exchange it, it will be even more exaggerated.

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