When Lin Feng was refining the golden round pipe, he was also actively cultivating earth-based magic, and after a few days of penance in the Void Realm, several basic earth-based magics had been mastered by Lin Feng.

These basic earth magics are Earth Mastery, Sandification, Lithification, and Earth Thorn.

Earth control is the most basic earth magic, and only by being able to skillfully release earth control can you learn a higher level of earth magic.

After learning to control the earth, you can increase your sensitivity to the earth element, and you can perceive the inner situation of the earth by inputting magic into the earth, which is the basic magic of the earth system, and it is also a very practical magic, especially for Lin Feng who is about to dig the basement.

Sandification and Lithification are two spells that restrain each other, and these two spells have opposite effects.

Desertification is the transformation of rock into fine grains of sand, while lithification is the opposite, which is the aggregation of fine grains of sand into hard rock.

The ground thorn technique is an earth-based attack spell, which can protrude a ground thorn from the ground to attack the opponent, and the attack method of the ground thorn is very insidious, specifically attacking the next three ways, and the lethal surname is very high. However, the Spike's attack is too obvious and easy to dodge.

After another Void Realm practice, Lin Feng felt that he was sure, and only then did he enter the basement to prepare to dig.

The existence of the space tunnel is a secret that cannot be passed on, and how to keep it a secret while using the passage is a problem that Lin Feng has been thinking about.

Lin Feng's plan was to build the passage inside the mage tower and rely on the power of the mage tower to protect the existence of the passage.

After entering the basement, Lin Feng used the sand technique on the four walls to turn the hard walls into fine sand, and then Lin Feng used the storage ring to put the fine sand into the storage space.

After the basement was bigger, Lin Feng shifted his direction, and began to dig around the wall of the space tunnel, although the space tunnel was connected to another world, but the area occupied was not too large, almost occupying a 4 cubic meter of land, under Lin Feng's excavation, there was soon a cube with a length and width of 2 meters in the basement, and the middle of the cube was the space tunnel.

Lin Feng began to use lithification to strengthen the four walls of the cube, and then inserted twelve gold pipes around the walls of the cave, each of which was connected by special gold wires.

Lin Feng then re-buried the gold pipe with the fine sand that had just been excavated, and used lithification to turn the fine sand into rock.

After this step is completed, then the protection of the space tunnel is equivalent to completion, and after the mage tower is completed, the pre-buried gold pipe will be connected with the mage tower, thus forming a defensive magic array, unless the magic array is destroyed, otherwise, no one can forcibly destroy the defensive magic array composed of these twelve gold pipes.

Lin Feng began to tidy up the dug ground, and after Lin Feng's tidying, the entire basement became a huge circular pit with a diameter of thirty meters, and the left front of the pit was the existence of the space tunnel.

After the pit was tidied up, Lin Feng continued to bury the gold pipes on the four walls of the pit in a certain direction, and buried a total of thirty-six gold pipes in the surrounding cave walls, and then buried a special gold ball in the center, which happened to be thirty-six gold balls, all the gold balls and gold pipes were connected with gold wires, that is, the twelve gold pipes around the space tunnel were also connected with these gold balls and gold pipes by gold wires.

Once the wires and pipes are arranged, they are covered with fine sand and then solidified by lithification.

After several hours of busyness, this level of passage is finally completed.

Lin Feng then began to dig down at one of the locations, making a stone staircase down as he did.

The stone staircase continued ten meters down, and Lin Feng came to the end and began to dig the second basement.

A few hours later, the second basement was completed, and the second basement and the second basement were also arranged in the same way, except that the spatial tunnel in the middle was missing.

After the second basement was completed, Lin Feng still dug down the third basement, and the third basement was soon dug up, but when the third basement was halfway arranged, the gold pipe was actually used up, and the work of the third basement was forced to stop.

Lin Feng was completely immersed in the construction of the Mage Tower, as soon as he saw that the gold pipe was running out, he immediately started refining the gold pipe in the third basement, Lin Feng had become more and more proficient in the refining of the gold pipe, and after three hours, the required gold pipe refining was completed, and the third basement was also arranged.

Lin Feng stood up happily, but he immediately felt a burst of dizziness, and a deep feeling of exhaustion came out of his body, Lin Feng immediately knew that it was not good, he was too tired.

Although Lin Feng's body is strong, after all, he is flesh and blood, not steel machinery, he will also be tired and tired, Lin Feng is too obsessed with the construction of the mage tower, and his body is about to collapse.

Lin Feng really felt so tired and tired, he didn't bother to move and lay down on the ground, and then fell asleep.

Lin Feng slept for a day and two nights, and after waking up, Lin Feng still felt that his brain was groggy, and this drowsy state lasted for a day before he recovered.

Lin Feng will be obedient, and he will no longer dare to overdraw his physical strength, so he can only carefully dig the basement.

In the blink of an eye, another five days passed, and the remaining three basements were finally completed by Lin Feng, and the underground part of the Mage Tower was finally completed.

The Mage Tower is divided into two parts, six underground floors and nine floors above ground, for a total of fifteen floors.

The six underground floors have been completed by Lin Feng himself, and now there are nine floors on the ground.

Although the mage tower is divided into two parts underground and aboveground, there is no passage left between the underground and the ground, and if you want to enter the underground part freely, you can only use the teleportation magic array arranged by the mage tower, and enter and exit the underground part through the teleportation of the magic array, and the operation of the teleportation circle is only in the hands of Lin Feng, which can basically prevent outsiders from entering the basement.

Although only the six underground floors were built, the amount of gold consumed was also very amazing, at least three billion worth of gold had been buried in the six underground floors, which was only the six underground floors, and the amount of gold consumed by the six floors above ground would probably be even more amazing, and when the entire mage tower was built, the amount of gold consumed would probably exceed 10 billion yuan.

The amount of gold consumed by this mage tower is so staggering that it is really not an exaggeration to say that it is a tower of gold.

Lin Feng silently calculated by himself, and was also taken aback, although he had plenty of gold, he couldn't withstand such consumption.

Even if all the gold stolen from the Zhou family is used for the construction of the mage tower, I am afraid that the rest of the gold will not be able to build this tower.

In fact, the amount of gold consumed by Lin Feng has far exceeded the consumption of normal mage towers, and Lin Feng's mage tower is enough for dozens of mages to build their own mage towers.

Of course, it takes gold to build the Mage Tower, but it doesn't need so much gold, Lin Feng is a Mage Tower built according to the highest specifications, and it is built so tall, so it consumes so much gold.

Lin Feng silently calculated, the remaining gold in the storage space could only build another six-story mage tower at most, and at least three billion worth of gold was needed to complete the construction of the last part of the mage tower.

Lin Feng is not short of money, but this amazing amount of gold, where to buy it?

It's too conspicuous to buy at home, so it's better to buy it abroad and then bring it back secretly through a storage ring.

Well, that's it.

The matter of buying gold was handed over to Chen Xueer to contact, and it is estimated that it will take a few days to have news.

The tin house in the backyard has been officially demolished by Lin Feng, the backyard has been completely sealed, and the traces of the existence of the basement have been completely erased, unless the surface is dug up, the existence of the basement is invisible.

Soon after the demolition of the iron house, the old house was also demolished by the construction team invited, and the construction team began to build the mage tower according to the plan.

The people in the construction team can't manage so much feng shui or anything, they also collect money to do things for others, as long as the owner of the house pays on time, they will naturally work hard.

The construction team had no choice but to pour a layer of cement up to two meters thick on the ground as a foundation, and then build a pagoda on the thick cement floor.

The construction of the tower is no better than digging a hole underground, it is impossible to complete it so quickly, Lin Feng can only send someone to guard the construction site as a supervisor, and the person who supervises the construction is easy to find, just pick a few people who understand construction from Zhao Darong's comrades-in-arms.

Everything was going on in an orderly manner, and Lin Feng did not relax his cultivation.

Lin Feng's cultivation has finally reached the late stage of the magician realm after so many days of cultivation, but the strange thing is that Lin Feng has tried to impact the ** master realm several times, but he can't succeed.

The impact of the realm lies in breaking and then standing, you need to use the magic power in your own star core to break the star core first, and then refine the star core, regather the star core, and wait until the star core gathers again, and then you enter the realm of the great magician.

The breaking and standing of the star core is a washing and sublimation of power, and only then can it enter the realm of the Great Magician.

The star core seems fragile, but in fact it is extremely hard, ordinary mana cannot break the star core, only when you enter the late stage of the magician realm, and the magic power reaches the peak state, it is possible to break the star core and enter the great magician realm.

This process is very difficult, and the ten ** magicians are all blocked by this process, and they can only be a mere magician for the rest of their lives.

The three magicians in Dolan City have been blocked by this process for decades, so that they still stay in the magician realm.

Lin Feng checked his own state and was soon surprised to discover the reason why he couldn't break the star core.

(To be continued)