A little essence stored in the dantian was sent into Feng Yu's body to help him replenish the essence element, although compared to what he lost, Fang Yan gave him a few points more, but this time out and in, Feng Yu was damaged after all, and he had to cultivate for a period of time before he could recover.

It's like a person who has lost too much blood, and then a blood transfusion refills the lost blood, and gives more, and on the surface it seems that there is no loss, but people are not machines.

"Did you use the Imperial Sword Technique just now?" Seeing that Fang Yan had finished his work, Feng Yu continued to recuperate, Senior Sister Hu asked casually. "The Demon Lin Sword is stronger. ”

Fang Yan looked at him and said, "After we separated, what did you encounter later?"

Senior Sister Hu turned her head and looked at Fang Yan's eyes and said, "What about you, what happened after you led away the sandworms?"

Fang Fengbao and Lin Feng drove the scaly horses back that had run away, and Fang Fengbao asked, "What are you talking about, Brother Yan, where have you been all these days?"

"It's a long story, after separating from you......" Fang Yan slowly explained the matter, of course, he only said it roughly, and the details were not explained, and what should be hidden naturally will not be revealed.

"The ninth-level demon beasts have all been killed by you, what about Neidan, what about the demon beast materials, you can sell them at a sky-high price just a little bit." Fang Fengbao's eyes turned into money, looking at Fang Yan's eyes shining, looking up and down, searching for the target.

"This is the skin of the sandworm, baby, hey, the magic weapon of storage, good things, it's made, it's made, it's rich......" Fang Fengbao took a few leather bags, and the whole person became a little crazy.

Everyone was used to it, and they didn't care about it, Fang Yan turned to ask: "What about you, what happened during this time, I am on the sandworm, I don't know how long it has been, has the barbarian army already gone south?"

Lin Feng said: "After we separated, we chased the sandworm to find you, and then encountered the beast tide, the barbarian's city was destroyed, and the barbarians who escaped scattered, and then the sandworm came out of the mountain, just in time to meet the barbarian army that rushed back......"

As Lin Feng spoke, Fang Yan gradually sorted out what had happened during this time.

After being swallowed by the sandworm at the beginning, Fang Yan had been parasitic on the sandworm for a month and a half, the sandworm came out of the mountain, destroyed several barbarian tribes, went west, encountered some of the barbarian army that rushed back, chased and killed the barbarian and went west, what happened later, it is not clear.

Because of the barbarian army's reinforcements, Lin Feng and the others did not dare to continue chasing the sandworms, so they could only deal with those deserters who were chased by the sandworms.

"I see, after I escaped, I also saw that the grassland was full of barbarian soldiers who left some things after being defeated and fled, I don't know if it was the main army of barbarians, or the vanguard army that went south to support, but no matter what, now it seems that the barbarians may divide their forces back to Heishui and White Mountain, or maybe they will break the cauldron and sink the boat, and the army will go south. Fang Yan said and his brows were furrowed.

An unexpected change disrupted his original plan, and coupled with the problem of time, many problems surfaced, making him feel a sense of helplessness.

"We went back to Heishui and Baishan, and now the opportunity has been missed, even if we go back to the border gate, it will be too late. Fang Yan made up his mind. "We still have to do what needs to be done. ”

Senior Sister Hu frowned and said, "You still want to wake up the Earth Dragon?"

Fang Yan shook his head slightly and said, "Take one step at a time, and look at it one step at a time, it can only be like this now." ”

Fang Fengbao suddenly ran to Fang Yan's side, groping around: "Brother Yan, Neidan, Sand Worm Neidan, Neidan of the ninth-level demon beast, give me a look, I haven't seen it in my life." ”

"Nope. ”

"How could it not be, Brother Yan, don't lie to me. Fang Fengbao looked unwilling. "Brother Yan, don't make trouble, show me, I promise to just take a look. ”

Fang Yan said with a cold face: "In order to escape from the belly of the sandworm, I naturally have to kill the sandworm, and Neidan has already been destroyed." ”

"Huh!?" Fang Fengbao was stunned on the spot, as if he was stupid.

After a while, Fang Fengbao cried and shouted: "My money, my ninth-level demon beast Neidan, it's just gone......"

Lin Feng shook his head helplessly, too lazy to care about him.

Riding a scale horse, everyone headed towards the Black Water and White Mountain, on the way, Fang Fengbao naturally kept chattering, and he was always obsessed with the sandworm Neidan, and everyone just didn't hear it.

Two days later, everyone came to the foot of the Black Water and White Mountain, and entered the mountain forest area, and Feng Yu, who was a little weak, pointed to the front with a simple map and said: "The black fire oil of the barbarians comes from the mountains, and it will be almost possible to walk fifty miles ahead." ”

"Have you explored the veins of the Jiuqu River clearly?" Fang Yan looked at the abstract map, and could only rely on imagination and calculation, and let Zhi Brain help analyze it.

Feng Yu pointed to the map and said: "This is the source of black fire oil, and the source branch of the Jiuqu River is here, about forty miles apart, and there should be other veins, which need to be investigated on the spot." ”

Senior Sister Hu said: "If we can go deep into the mountains, we can also change the river course, anyway, the water source of the Jiuqu River is the melting of the snow on the top of the Black Water and White Mountain." ”

Lin Feng shook his head and said: "If you want to introduce the black fire oil into the Jiuqu River, if you change the river course, it will be too troublesome, there is a mountain in the middle, and it will pass through the territory of the demon beast, it will be too time-consuming, not to mention, and it will not be safe." ”

Fang Fengbao shook his head and said, "It's so troublesome, is it useful? The black fire oil was introduced into the river, and the barbarians burned it, and everything was solved in the coming year." ”

Senior Sister Hu said: "You also said that it is the coming year, and the barbarians will not have a good time this year, so it's okay." ”

Fang Yan pondered for a moment and said, "The Temple of Earth and the Jiuqu River are quite close, have you ever been there?"

Fang Fengbao said: "How can you go, it's a place where the earth dragon sleeps, go and die?"

Feng Yu said: "The location of the Temple of Earth is remote, and we only found it after three days of searching, and it doesn't look like the place where the Earth Dragon is sleeping, I think the legend may not necessarily be true." ”

"What's going on?" Fang Yan looked at Fang Fengbao, the legend of the Earth Dragon, he inquired most clearly.

Fang Fengbao smashed his mouth: "I also heard that the earth altar is a pile of stones piled up in a stone pile, if you want me to say, maybe the earth dragon is a sandworm, because of the age, the legend has changed its taste." ”

Senior Sister Hu said: "The legend of the earth dragon is too long, and the information is not complete, according to the legend of the earth dragon, I also think that the earth dragon may be a sandworm." ”

Feng Yu said: "For the Ming King Domain, in fact, god-level demon beasts and ninth-level demon beasts are almost the same, anyway, no one is invincible, and it takes too long, and it is impossible to verify." ”

"We'll see. Fang Yan exhaled a breath of turbidity, after experiencing the sandworm incident, he felt a lot of emotion, the plan could never catch up with the changes, it was originally just to confirm the Demon Lin Sword and deal with a barbarian team of 10,000 people, but he didn't want the final problem to snowball and become out of control.

Now that there is a problem in the matter of Dilong, Fang Yan almost does not dare to guarantee what situation he will encounter, no matter how much he plans at this moment, it may become useless in the end, all plans may be broken by changes, he can only keep the plan in his heart for the time being, and then it will depend on the situation.

Returning to the first line of heaven, Fang Yan looked at the corner stone wall at the end of the road, and felt some emotion in his heart, patting the horse and leaving, and not entering the first line of heaven.

After a glimmer of time, it was the city of bald people, and now it was naturally a sandy area, and there was nothing to be found when you went in.

Ten miles to the right of the first line of the sky, everyone saw a dilapidated building, surrounded by no vegetation, the land seemed to have been soaked in oil, and a large pit in the center of the building was full of oil, because of the pressure, the oil overflowed and spread to the lower places.

Fang Fengbao looked at the sticky ground with disgust, and didn't want to step forward again: "You say, if I light a fire, what will become of here?"

Everyone didn't bother to respond to him, Fang Yan took out a Luoyang shovel and stuck it into the ground.

Observing the soil layer and studying the underground soil structure, Fang Yan is not a geological expert, and he can only use a little information he knows about the previous life to explore the geological situation, roughly understand the oil vein, and drill to find oil.

"Zhi Brain, let me calculate, according to the rules of soil layer change, where can I dig up oil?" Fang Yan is not an expert, so naturally it is impossible to see anything from the soil layer, so he can only rely on Zhi Brain to help.

"The data is incomplete and cannot be calculated, and if the host needs to explore oil, it can be explored with a vein detector. ”

Fang Yan paused for a moment, looked at the oil in the pit, and shook his head with a wry smile: "Being smart is mistaken by being smart, and thinking has gone into a misunderstanding." ”

The things that the ore vein refiner must learn when he gets started, Fang Yan had also used it in the Taiwu Secret Realm, and now it is easy to refine a detector again, but he needs to specialize in oil exploration.

This time is rich in aura, not the earth, and oil also contains aura, Fang Yan specifically searched for oil, let the wisdom brain help calculate, and soon refined five detectors.

"Let's take the detector and scatter to explore, go down, walk in the direction of the Jiuqu River, and don't go wrong along the vein. "Hand over the detector to the four people, Fang Yan reminded.

Fang Fengbao took the detector and said, "Brother Yan, you don't want to drill a well by the river, you are not afraid of lack of time." Even if you find the black fire oil, what can you do with that amount of oil when you pour it into the Jiuqu River. ”

Fang Yan smiled: "You don't understand, I don't blame you." You'll find out then. ”

To explain the oil production problem clearly, Fang Yan himself can't explain it clearly, and it involves many problems such as underground oil reserves, underground pressure, etc., and it is better to explain it than not to explain it.

Following the detector induction, everyone walked in the direction of the Jiuqu River, the initial induction was extremely strong, and as they moved forward, the induction gradually weakened.

This special detector is originally made for oil, and the detection range has also been enhanced to a range of five miles, which requires continuous injection of true gas supply detection, and the farther the distance, the weaker the induction.