After Lu Yi drove the people of the Qinglan family away, he went out directly, he went directly out of the capital of the Qinglan Empire, and used the teleportation array outside the city to teleport to the border of the Qinglan Kingdom, and he wanted to choose a suitable place as the site of the newly built Qingliu City.

It's easy to build, but it's so difficult to do. First of all, site selection is a major problem, although Lu Yi delineated the general area, but also need to conduct field surveys, which need to consider many factors, such as geographical environment, climate, nearby resources, etc. Lu Yi had previously drawn a piece of ground within a radius of thousands of miles on the geographical map, and this time he was going to go there with Venerable Litian to see where the final city would be built.

Lu Yi has already designed the scale, style, offensive and defensive layout of Qingliu City. According to his design with Venerable Li Tian, Qingliu City occupies a small area, it is only the scale of a small city, the inner city is square, each side is eighteen miles long, and the outer city is circular, and the four inflection points of the inner city wall each extend outward for three miles and then intersect with the outer city, forming four passages from the outer city to the inner city, which are used to enter and exit Qingliu City, and when the outer city is attacked, the four passages have another function. Lu Yi needs to find a higher place to build the inner city, which is conducive to defense, there are two small highlands and a small hill within a thousand miles, and Lu Yi wants to investigate all three places.

Lu Yi drove the bird all the way, first came to the small hill, this small hill covers an area of only more than fifty miles, if the city is built, it is just completely surrounded, in height, this small hill is about two hundred and forty or fifty zhang high, the only undesirable is the cliffs on three sides, after the city is built, it needs to spend a lot of effort to transform the mountain to build residential facilities and other facilities.

Lu Yi came to another small plateau, which is a rare large black rock in the Western Regions that appears abruptly on the ground, the highest height is only less than 60 zhang, and there are some gaps between the rocks of different widths.

Lu Yi came to the last alternative place, which is an oasis with dense vegetation and a small lake, covering the smallest area, only less than forty miles, the ground is silt and sand accumulated for many years, the geology is relatively soft, the edge of the highland has been sandy, and the highland is constantly being eaten away by the surrounding desert.

The three places do not seem to be too ideal, it is no wonder, the Western Regions is desolate, the geographical environment is harsh, and there are very few areas that can build cities, after so many years, all the good places have long been occupied, and if you want to excavate a new piece of land, and it is limited to such a small area, it will definitely not be too easy to find.

Lu Yi returned to the small hill again, and in comparison, this place was still more suitable. Lu Yi took out the hook and opened a cave more than one person high on the cliff in the middle of the mountain, so as to test the hardness of the mountain rock, and by the way, take a look at the internal situation of this hill. The rock outside the hill is a very ordinary weathered rock, which can't withstand excavation at all, and Lu Yi can even tear off large pieces of blade-like stone chips by hand, until the rock gradually solidifies after digging more than ten zhang inside. After digging more than 30 zhang inward, the hardness of the rock was already ideal.

"Otherwise, you will build a city in the belly of the mountain. Venerable Li Tian proposed, "Such a city has mountains as protection, and it is easy to defend and difficult to attack. If you set up a super-large psychedelic array on the outside, and you can hide the entire mountain, then no one else can find it, let alone attack it. ”

"Don't hide it from my predecessors, I have the same intention, let's dig in a little more, I'm curious about what the innermost part of this mountain will be like. Lu Yi replied while continuing to dig in his hands.

At a depth of 100 zhang, the rock is already comparable to a third-order material, and at a depth of 150 zhang, the hardness of the rock has reached the strength of a fourth-order material.

"How about building a layer of defense here?" Lu Yi discussed with Venerable Litian.

"Yes, the strength of the fourth order can already resist the usual attack a little, if it can reach the strength of the fifth order material at about two hundred zhang, you can give up here first, and directly establish a one-step defense inside. Venerable Li Tian motioned for Lu Yi to continue digging deeper.

At two hundred and forty zhang, the hardness of the rock has reached the level of a fifth-order material. After making the mark, Lu Yi continued to dig deeper, but he had been digging to a depth of more than ten miles, and the hardness of the rock had not changed again, and it seemed that he was about to dig to the center of the small hill, and it seemed that the structure of this mountain was like this. Because there was no plan to build a city in the belly of the mountain, Lu Yi had to go back and make a new plan, so he returned from the center of the mountain, and after leaving the cave, he went all the way to the border of the Tassel Empire. At this moment, the monks from the Tassel Family who went to the Qinglan Empire to support had arrived at the border of the Tassel Empire, and after receiving Lu Yi's summons, they stayed in place to repair in order to wait for Lu Yi's further instructions.

Maybe Tassel Katayama also had an explanation when he left, so the people of the Tassel family really treated Lu Yi as if they were their own family, shouting one by one, which made Lu Yi very uncomfortable, but the communication with the Tassel family is much smoother than with the Qinglan family, the people of the Tassel family are still very strategic, they expressed their agreement with Lu Yi after listening to Lu Yi's city building plan, and now Lu Yi said that he wanted to build a city in the belly of the mountain, they showed a strong interest, and he said that he would fund the construction of the Qingliu City alone, and he said that he was a family with Lu Yi sooner or later, and the fertilizer water could not flow into the fields of outsiders。 Lu Yi definitely can't let the tassel family dominate, he still has to control the overall situation, if the tassel family invests the lion's share, wouldn't he make a wedding dress for others? !

insisted on finalizing the thirty percent share of the tassel family, Lu Yi asked the others to go back to prepare first, and he took two representatives of the tassel family to the Qinglan Empire again.

When Lu Yi and the two Royal Spirit Consummation monks of the Tassel family appeared in the capital of the Qinglan Empire, Lu Yi immediately learned that the loose cultivators represented by Zhang Quanwen and the people of the Qinglan family had quarreled again, and the reason was that the people of the Qinglan family were causing trouble again.