"What? Xuan iron ore? Lin Feng, are you mistaken? Didn't you say that the last time you refined flying sword? Even in ancient times, xuantie was a precious material for refining utensils. How could Zhian city have it? "

Hearing Lin Feng's exclamation, Li Yutong also marveled strangely. Her understanding of cultivation now is based on what Lin Feng taught her, so she also knows that the smelting materials such as black iron are more precious even in ancient times, which can not be obtained in large quantities by ordinary friars during Qi practice.

But now, according to Lin Fenggang, there is not one or two pieces of black iron under this place, but a piece of black iron ore. What is this concept? If it is in the cultivation world, such a mountain gate where xuantie iron ore is located is enough to develop a powerful cultivation sect.

In fact, the cultivation world is the same as today's human society. Everything pays attention to talent and resources. Gifted friars, with sufficient resources such as skills, pills and materials, are bound to have strong cultivation and combat power.

In addition to skill and pill, various refining materials are also one of the important cultivation resources. If this large area of Xuan iron ore is placed in the cultivation world, once it is found, it is absolutely necessary to seal the password to avoid the leakage of such important news. Because once the news is leaked, it may be known by other sects and compete.

However, in the current earth with exhausted resources and seriously polluted environment, Xiuzhen resources are even rarer than in ancient times. It is incredible to find such a large area of Xuan iron ore in the present end of the law era.

"I think it's incredible. Sister Tongtong, think about it. The two darts we got from the martial artist who played concealed weapons last time were so black iron. We already feel extremely precious and can be used to make Fengtong sword, a top-grade spirit weapon. Now there is a whole black iron mine here! Although we don't know how big the scale is, it's more than enough to make at least one thousand and ten thousand flying swords! "

Lin Feng is still in shock. His spiritual consciousness is constantly exploring deep underground, trying to explore how large the scale of this xuantie iron mine is.

However, the texture of Xuan iron ore is completely different from that of ordinary rocks. Lin Feng's spiritual consciousness can't go too deep. For example, Lin Feng's spiritual consciousness can be extended to a straight distance of 100 meters in the air, but if it is ordinary rock and soil, it can only go down 10 meters, but if it is xuantie iron ore, it is like hitting a wall and being bounced back.

"How could it be? Lin Feng, my spiritual knowledge can't even go deep into the ground for a meter. This Xuan iron mine is so powerful. "

Li Yutong's spiritual awareness is not as strong as Lin Feng, so she can't even go one meter deep.

"Sister Tong Tong, this fully proves that my judgment just now is correct. The density of black iron is about ten times higher than that of ordinary fine iron, so our spiritual consciousness can't pass through close metal atoms. However, because of this, black iron has some very strange chemical and physical properties, which is especially suitable for making flying swords and some body protecting spirit tools. "

After pulling up Feng Tong's sword, Lin Feng walked around the mountain again.

"How's it going? Lin Feng, how big is this black iron mine? " Li Yutong asked behind him.

"Very big! At least the range that my spiritual consciousness has just detected is so large... "Lin Feng said with a smile.

"That's great! There are so many black iron. Don't we have as many flying swords as we want? "

After refining Fengtong sword last time, Li Yutong has always wanted to have his own flying sword, but because the materials are scarce and their cultivation is not high, it would be a waste of resources if they were to refine spirit tools alone. Therefore, there has been no refining spirit tool level flying sword for a long time, but if you have so many black iron now, you don't have to worry about resource consumption.

"Ha ha! You don't need so much black iron to refine the flying sword. I think it's enough to refine the spaceship! "

It's a great surprise to find the xuantie mine in tianlaofeng today. If it weren't for investing in road construction here, Lin Feng would never find the xuantie mine buried under it even if he passed here 100 times and 1000 times.

However, at the thought of the road construction in the scenic spot, Lin Feng frowned: "no! Sister Tongtong, if... The underground is really black iron ore, I don't think it's a problem at first. Now it's a big problem. "

"Ah? What's the problem? Lin Feng, what you said should not... Is the problem of road construction in scenic spots? "

As soon as Li Yutong's heart sank, he immediately understood, "that's really a big problem. After all, it's hard for me to refine this black iron even with pure Yin Fire, not to mention other modern machines. Even with the means of other practitioners, it's easy to deal with ordinary rocks and minerals. But... If you deal with xuantie, just... "

"Yes! This is a headache. The texture of Xuan iron ore is so hard that it is difficult for my vitality fire to melt. Let alone open the way, we have to dig out some black iron to refine the flying sword. We don't know how to start. "

This is the huge problem Lin Feng is facing now. He defends Baoshan empty and doesn't know how to use it.

Whether you use it or not, the black iron is here. It doesn't move, and you can't move it.

"Then it will be troublesome. If the mountain road here is still unable to get through, the plan of the whole scenic spot will really run aground. Almost all the natural landscapes are behind Tianmu peak! We can't learn from some scenic spots in China and build some heavenly roads out of thin air? "

Li Yutong said in a deep voice, "but the cost of such a Tianlu is higher and the technical requirements are very strict. These are secondary. The key is that if we build Tianlu, we are extremely prone to various accidents. "

What is Tianlu?

The Tianlu mentioned by Li Yutong is a road with complex terrain in China. When other construction cannot be carried out, it can only build suspension bridges or piers out of thin air without relying on any mountains or other supports.

The cost of this kind of sky road is high, and the risk factor is very high when it is built. In addition, the maintenance cost every year is also very high, and it is difficult to guarantee 100% safety. Therefore, unless it is really a last resort, the construction unit will never adopt such a scheme.