Three days later.

A golden sword flew through the air, and on the sword, a man was hugging a girl tightly. The man was handsome and had an extraordinary demeanor; although the girl was still young, she was still very beautiful.

These two people are Feng Shao and Lin Xiaoran.

After discussing with Deng Jingyun, Feng Shao and Lin Xiaoran left Qingdi City. They did not take the spirit boat, but rode Feng Shao's Golden Crow Sword and flew all the way. Three days later, they arrived at the small village they had been to before.

At this time, in the downstream of the small village, a few wooden houses and tents have been set up, and simple buildings are under construction. In this camp, the people walking around are all disciples of the Nine Nether Holy Land wearing black clothes. They have been here for more than ten days under the leadership of Zuo Linglan, and are quickly adapting to the new life.

When Feng Shao and Lin Xiaoran arrived here, the disciples of Jiuyou Holy Land noticed it. They quickly reported to Zuo Linglan, who then received the two in the largest wooden house.

Looking at the perfect couple in front of her, Zuo Linglan's eyes flashed with envy. But she immediately hid the envy and smiled at the two of them, "You two are finally here. We have been waiting for you for a long time."

Before Feng Shao could reply, Lin Xiaoran couldn't wait to say to Zuo Linglan: "Sister Zuo, since you are here, you will not leave in the future, right? My husband wants to build his own foundation, and he doesn't have many people. I hope you can stay and help!"

Zuo Linglan smiled and said, "Of course. We are very grateful that Master Feng is willing to take us in. If there is anything we can do to help, please don't hesitate to help."

Feng Shao smiled and said, "Since Miss Zuo has made a decision, I will welcome you. Then, let me tell Miss Zuo about the situation of this land first!"

Zuo Linglan nodded solemnly: "Please go ahead."

Afterwards, Feng Shao introduced this land to Zuo Linglan in detail.

This land, called Wulingyuan in ancient times, was once a place with abundant spiritual energy. About ten thousand years ago, the spiritual energy here gradually dried up, and the sects originally located here were forced to migrate.

In fact, the reason why this place was originally rich in spiritual energy was because of the natural spiritual energy vein buried deep underground. This vein leaked natural spiritual energy to the surface through a very small branch. Since the leaked spiritual energy was not much, after being diluted by the air, it became spiritual energy suitable for monks to use. The sect located here also became a well-known and powerful sect because of this.

However, due to geological changes, this small branch was blocked by rock layers, preventing the spiritual energy from leaking to the surface. This was mistakenly believed to be the exhaustion of spiritual energy, so the sect moved without a detailed investigation, and the place gradually became deserted.

After tens of thousands of years of changes, the remains of the sect have completely disappeared, leaving only a small, uninhabited plain.

After listening to Feng Shao's introduction, Zuo Linglan couldn't help but ask in surprise: "Mr. Feng is indeed well-informed, but how did he know this ancient secret?"

Feng Shao smiled faintly and said, "I was fortunate enough to obtain a geographical atlas from ancient times, and only then did I know about this."

Zuo Linglan nodded: "So Master Feng means that as long as we find a way to open up that underground mineral vein, we can turn this piece of land into a place with abundant spiritual energy suitable for cultivation?"

"good."

"So Master Feng wants to create a sect?"

"No." Feng Shao shook his head, "I plan to build a city here."

Next, Feng Shao told Zuo Linglan about his next plan.

“Miss Zuo, in a few days, the spiritual energy pipeline that I ordered from Yunjian Pavilion will be delivered. At that time, we can start to extract the natural spiritual energy from underground. However, this natural spiritual energy is too concentrated. If a cultivator absorbs it without dilution, it will be harmful to the body. So after extraction, I still have to do some research to figure out the best dilution ratio before I can release it.” Feng Shao said.

Zuo Linglan smiled and said, "In that case, I will wait for Master Feng's instructions with my fellow apprentices!"

Two days later, Xue Li, the head of the Fire Refining Hall of Yunjian Pavilion, came to Wulingyuan with the former Taiwei Sect disciples. As soon as he saw Feng Shao, Xue Li laughed and said, "Son-in-law, I, Old Xue, have made all the pipes you want! Come over and take a look at how good Old Xue's craftsmanship is!"

Feng Shao smiled and said, "Master Xue's craftsmanship is beyond reproach. Hurry and show it to me. I can't wait any longer!"

Since Feng Shao needed to build a spiritual energy pipeline that was at least 500 meters long, Xue Li had to build a lot of pipes, and it took several storage rings to install all the pipes. The two found an open space, and Xue Li began to empty the spiritual energy pipeline from the storage ring.

The modified spiritual energy pipeline adopts a nested design. Each pipeline is nearly ten meters long, and there are more than sixty pipelines in total. There is a pressure relief design on the pipeline, which can relieve the pressure of spiritual energy layer by layer. In order to have an intuitive data expression of the pressure relief, Xue Li also designed a pressure gauge very considerately, which made Feng Shao stunned.

Who says the ancients were stupid? They just lacked some knowledge due to the limitations of the times. But if you give them a chance, they can definitely design something that will surprise you.

The pressure gauge designed by Xue Li was a little crude, but it was ingenious. At least for this world where pressure gauges had never been invented, Xue Li's design was already extremely advanced. After debugging it, Feng Shao couldn't help but give Xue Li a thumbs up and praised him: "Master Xue, you are amazing. You can make such a good thing!"

Xue Li smiled proudly and said, "Son-in-law, you may look down on anyone but you can never look down on me, Old Xue! With my skills, even the Pavilion Master would be scared back then!"

The two looked at each other and burst into laughter.

Now that the equipment is complete, the next thing to consider is drilling.

The diameter of the spiritual power pipeline is one meter, so the width of the drill hole must also be one meter. Feng Shao had no experience in mining, and his original plan was to take it one step at a time and modify the next action according to the situation. But Xue Li patted his chest and said, "Leave this kind of thing to me, Old Xue! It's just drilling a hole, how difficult can it be?"

Feng Shao hurriedly said: "Master Xue, this matter cannot be taken lightly. If we are not careful and cause the spiritual energy to leak, the consequences will be disastrous!"

Xue Li squatted down, picked up a branch, and drew on the ground while saying, "Son-in-law, your plan is nothing more than drilling a hole that can reach a depth of one mile underground. The principle should be similar to digging a well. But the deeper the well is dug, the harder it is to dig below. Generally speaking, a well can be dug ten feet deep at most, but the hole you want to dig is ten times that deep, so we have to change our thinking to dig."

Xue Li was drawing as he spoke: "You see, the ground below ten feet is basically rock, and it cannot be dug with ordinary means. But we are cultivators, and we have our own methods. My idea is to make a drill first, but leave some holes on the drill so that the gravel can be transported out through the holes. But if this drill is to be controlled, it may have to be made into a magic weapon. Wait for me for a few days, I can make this drill for you in two days!"

Feng Shao looked at the drill pattern that had been drawn by Xue Li, and the corner of his mouth twitched.

Isn't this just a simple drill version of a shield machine? Although it is much simpler in form than a real shield machine, the principle is the same. It is unlikely that the drill designed by Xue Li can dig a subway tunnel, but it is not difficult to drill a hole 500 meters deep!

Feng Shao couldn't help but fall into deep self-doubt. Although he never dared to look down on the natives of this world, he always had a sense of superiority in his mentality after experiencing the high-tech world. He felt that some of his knowledge was completely unknown to the people of this world. But now, he found that his advantage might only be his own knowledge. But in terms of professional ability, he was completely inferior to the natives who really studied hard.

It seems that I need to adjust my mindset and not underestimate the people in this world!

After the two discussed it again, they initially determined the style and usage of the drill. It must be said that some of the monks' methods are indeed much easier than conventional methods. In reality, it took several years to study a shield machine, and countless researchers worked day and night to make a shield machine that is famous both at home and abroad. Looking at them again, with just a simple sketch, they determined the prototype of the shield machine like a magic weapon.

After this magic weapon is made, it will have the ability to store space and can store chopped rocks. The saw teeth are strengthened with special materials and sharpened with magic arrays, making it easier to cut rocks. The magic weapon can be embedded with spiritual stones to maintain its operation. As for the control, any Jindan realm cultivator can easily control it, and the threshold is extremely low.

However, after the design was completed, Xue Li said with emotion: "Although I have designed this kind of tool-type magic weapon before, they can all be used as weapons to a certain extent. At the very least, they can be used to hit people. Making a magic weapon specifically for drilling into the ground is really the first time for me, Old Xue!"

Feng Shao heard this and nodded thoughtfully: "Perhaps in the future, we will have to make more magical instruments of this type."

Feng Shao almost understood why this world, with so many convenient conditions, still had not developed cultivation technology. Perhaps it was because the cultivators paid too much attention to the means of killing and ignored the role of tools!