My brother is so cunning.

Wen Rui once combined the treacherous sword path of Moye Sword Technique with the high speed of Feijin Sword Technique, and spent a lot of effort to develop a set of "Piaomiao Wuding Water Drop Sword Technique".

This sword technique is still in version 1.0. Wen Rui wants to improve it, but he has not thought of the direction of improvement for a while.

Now he reversely analyzes the heart nail and gets inspiration all of a sudden.

Among all the flying sword techniques in the three realms, the strength of Piaomiao Wuding Water Drop Sword Technique can at least be ranked in the top three.

However, the difficulty of practicing this sword technique has greatly limited its popularity. After several rounds of Jinling Xianzong, only four disciples, Shui Ning'er, Bing Linglong, He Lingyun, and Ya Yan Ge, have studied it.

The reason is that the sword path calculation is too brain-burning. If the mathematics does not reach a very high level, you are not even qualified to practice. If you make a mistake in calculating a parameter and draw a sword, it is equivalent to suicide.

Needless to say, Ao Lie and Luan Qingyu, the combination of Crouching Dragon and Phoenix, have not yet graduated from high school.

Even Little Fox and Cheng Ziwei, two top students who have obtained master's degrees, still have a math level that does not meet the passing line for cultivation.

Such a sharp sword technique cannot be widely taught and made into the standard for Jinling Xianzong disciples, which Wen Rui deeply regrets.

Today, the number of disciples in Jinling Xianzong has exceeded three digits, reaching more than one hundred. The newly added disciples are mainly orphans rescued from Dingguang Xianzong.

Over the years, the children have gradually grown up. Among them, Wen Rui selects those with outstanding cultivation qualifications and recruits them into Jinling Xianzong. In addition to studying university knowledge, he also teaches the method of cultivation.

Comprehensive development of morality, intelligence and physical fitness is the hard truth. Only those with scientific thinking, profound knowledge and high cultivation can be regarded as the real hexagonal talents in the prehistoric world.

The talisman spells reproduced on the heart nail can be used to lower the entry threshold of the Misty Unfixed Water Drop Sword Technique and greatly reduce the amount of calculation required to use this sword technique.

In the future, when the disciples of Jinling Xianzong travel in the wild, they will use the sword with unpredictable high-speed and fast sword, and they will not be afraid of being bullied by the disciples of Xianjiao Sect.

The saved calculations can be applied to other aspects to develop advanced moves of the Misty Water Drop Sword Technique.

For example, the brainpower originally consumed in calculating the sword path can be used to calculate the dimension and space to achieve the highest level of cross-dimensional killing of Moye Sword Technique.

In this way, the disciples with poor mathematical talent can be taken into account, and those mathematical geniuses can also go further.

Thinking of this, Wen Rui entered the closed-door development state again, and devoted himself to the analysis of the magic formula of the Heart Nail Talisman.

…

A few months later, Wen Rui returned to the fierce demon domain of Damo Luoye Mountain.

Only a few months later, the tribal business alliance has built a huge stone city on the plain at the foot of the mountain.

The Rakshasa people are naturally strong and strong, and it is effortless to open mountains and chisel stones. This city was built by a group of demons hired by the Chamber of Commerce.

The stone hall built by the demon tribe is already quite magnificent, but due to technical and aesthetic issues, the building is tall and wide, but very simple.

The main city of the commercial alliance built with the assistance of the system has no such defects at all.

For the construction of some key locations, Jarvis was afraid that the demons were too stupid to learn the system instructions, so he took over the body directly and controlled the demons as bionic robots.

As the leader of the alliance, Wen Rui could actually force the demons to work for free.

However, in order to promote the universal currency of demons and let the demons understand the concept of "money", the construction of the city adopted the method of employment, and paid the demons meat coins as wages.

The demons who participated in the construction of the city and the demons who opened mountains, quarried stones and transported building materials for the city can all get meat coins as wages.

The demons' "portable technical school" system teaches the demons to use these currencies that can summon transport ships to deliver meat.

As the city gradually took shape, meat coins also began to circulate.

In the center of the city is a huge rock castle, which is the administrative residence of the commercial alliance.

Wen Rui, who arrived quietly, replaced the shadow warrior and met Huang Tianhua on the tower of the castle's main tower.

Taking out the Heart-piercing Nail and handing it over, Wen Rui said, "Brother, I have studied this magic weapon and made some changes to the formula. The improved lethality is enough to severely damage the Demon King."

Huang Tianhua took it with expectation. Wen Rui motioned him to follow, and then controlled the armor to take off.

Huang Tianhua quickly used the cloud-riding technique and followed Wen Rui to the depths of the mountains.

In mid-air, Wen Rui described the improved method of using the Heart-piercing Nail, especially the improved magic formula, and explained it word by word.

Huang Tianhua's mind is actually not stupid, but his foundation is too poor. After hearing Wen Rui's description several times, he memorized it by rote, knowing the result but not the reason.

The two went deep into the mountains, flew farther and farther, and came to a valley with a strong yin energy.

Before reaching the valley, they heard the roar of beasts in the valley.

When he flew over the valley, Huang Tianhua suddenly saw a giant beast tens of meters tall crawling slowly in the dead woods of the valley.

Such a large beast is rarely seen in the mortal world.

The beasts in the mortal world swallow the essence of the moon and the sun to cultivate continuously, and their bodies can continue to grow, but when their cultivation reaches a certain level, they often awaken their spiritual wisdom.

The awakened animals can quickly figure out the disadvantages of being too big, and deliberately change the direction of cultivation, no longer simply accumulating strength and size, but working hard to transform.

The beasts in the earth realm cannot be illuminated by the essence of the moon and the sun, and absorb demonic energy and yin energy to grow. Their thinking becomes more and more confused, and they only follow their primitive instincts, so they grow bigger and bigger.

Wen Rui pointed at the primitive beast that looked a bit like Godzilla, and said to Huang Tianhua: "Take that beast and test it. First, shoot it with a nail using the original attack method."

Huang Tianhua nodded, chanted the original spell passed down to him by Daode Zhenjun, and threw the heart-piercing nail at the beast.

A golden light flew out and passed through the chest of the beast, but it had clearly opened a hole as big as a bowl in the beast, and the beast only roared twice in pain.

The creatures in the Demon Realm survive the fittest in the harsh environment, and their vitality is very tenacious.

It was hit by the immortal magic weapon of the God General, but because the wound was too small, it healed soon, leaving only a shallow scab scar.

Huang Tianhua smiled bitterly and said, "The target is too big. Even if it hits the vital point and passes through the heart, the injury will not be serious."

"When your master refined this magic weapon, the imaginary enemy was only an immortal. He never thought of using it to fight a giant beast, so it needs to be improved."

Wen Rui spread his hands and said, "Try it with my improved method and compare the destructive power."

Huang Tianhua once again offered the Heart-piercing Nail, but this time he did not throw it out, but let the magic weapon float in the air.

The suspended Heart-piercing Nail spun rapidly, spinning faster and faster, accelerating continuously, and the rotation speed reached the limit, making a harsh buzzing sound.