After a maze of intricate staircases, Xu Fei came to the fourth floor, and was startled when he just arrived on the fourth floor. Originally, this tower looked like a five-story tower from the outside, but there were only four floors inside the tower, because there was no partition between the four floors and the fifth floor, and the fourth floor was two stories high.

Looking up, the combined height of the two floors, plus the height of the gap between the spires, is close to ten zhang. At the top of the tower, however, you can see the skylight, and at the top of this tower is a hole more than a man wide that leads to the outside.

Looking up from the four-story slab, you can only see a thin beam of skylight, and I don't know what the effect of this arrangement is. There is no beam and column structure in this space at a height of ten zhang, and it looks extremely empty. There are no furnishings around, not even a single window.

Because of the dim light, you can only see a glimmer of sky light revealed from the top of the tower. This situation was beyond Xu Fei's expectations, what to do with this nothing, and Dugu didn't know what information he wanted to pass on to himself.

In the midst of doubt, a shallow light and shadow suddenly flew out of the sky light on the top of the tower, like an existence between nothingness and reality, and quickly fell to the center of the fourth floor without moving.

Xu Fei knew that this was the setting of Dugu's method to improve his strength, and he didn't doubt him, so he stepped forward to touch this light and shadow to see what was weird.

The moment he saw that he was about to make contact, he saw that the light and shadow suddenly flew backwards a foot, extremely fast, and there was a slight displacement left and right when flying. It's like a master of quick body skills, dodging and using body skills to sway.

Seeing this situation, Xu Fei was relieved, it seems that this time it is enough to catch this light and shadow, he has martial arts, and he is very good at light skills, with the blessing of strength, after greatly strengthening his body functions, it is not difficult to catch anything.

Immediately tap your toes on the ground and rub your body up. The hand was only a few inches away from the light and shadow, and I saw that the light and shadow was like a small elf, and immediately moved backwards quickly. Flying left and right is like a butterfly piercing a flower, sometimes flying low to the ground, and sometimes drawing a complex flight trajectory in the air.

Xu Fei shook his spirits, exerted his light skills, and fought with this little light and shadow elf in this small light and shadow elf in this tower within a radius of several zhang, and every time he exerted force under his feet, he had to predict the direction of the light and shadow elf in advance. The body also clings to the light and shadow, interspersed with lightning in the tower.

In a moment, Xu Fei and the group of light and shadow elves galloped in the tower for I don't know how many circles, and several times when they almost succeeded, the light and shadow always suddenly changed direction at the last moment, escaping the fate of being captured.

After chasing for a while, Xu Fei already knew in his heart that the reason why he couldn't catch light and shadow at the last moment was because this group of light and shadow elves seemed to have a sense of strength. The moment you exert your own strength, the momentum that rushes forward abruptly will trigger the dodge mode of light and shadow.

If you continue to chase like this, I am afraid that it will be in vain, and the thunderbolt energy in the heart is sent out, but I didn't expect those air bombs to penetrate the light and shadow forward, and there is no hindrance, this light and shadow is really not a physical object.

Because this light and shadow is not a physical object, it does not have the slightest mass and is not affected by any inertia when flying. And Xu Fei is now urging the "King Kong is not bad" energy, greatly strengthening his body, and then using light skills to chase.

However, no matter how subtle the light work is, it cannot change direction anytime and anywhere like light and shadow without substance. Every moment he was about to succeed, the light and shadow elves would sense the coming momentum and change direction at the last moment.

It's like taking a bronze mirror and reflecting a ball of light and shadow in the sun to play with a civet cat, no matter how vigorous and fast the civet cat is, it can't compare to this substantial light and shadow movement.

It's never going to work.

Xu Fei had a conclusion in his heart, and his feet did not stop, but he was quickly thinking about how to solve the problem in front of him, and what else could push the body more quickly? The thousand-sided bronze mirror on the third floor was to test the ability of "condensation", could this light and shadow test also be the purpose?

After all, after passing the test of a thousand bronze mirrors on the third floor just now, the image formed by the reflection of the colored glass windows reflected by those copper mirrors was the predecessor of Dugu who turned the immortal cheats to the chapter of "condensation". This image must have a deep meaning, otherwise it has already passed the test, what is the meaning of this image.

The usage of "Condensation" varies a lot, and most of the Energetic Beings are used as long-range offensive and defensive air bombs. There are also methods to drain the air within a certain area, or to do the opposite, to vent the enemy's energy.

There is also a way to explode air bullets on the soles of your feet to urge your body!

On the same day, when he saw the head of Luoyanmen at the martial arts goodwill conference, and when he fought with Lu Chunyang in the Eight Immortals, he used this method to quickly change his position.

This method of bursting out the "condensation" at the end of the limb and allowing its reaction force to urge the body to counteract the body's inertia and make the body shape unpredictable and unexpected.

Xu Fei's heart moved, and he used his condensing energy under his feet, only to feel that his body was like an arrow from the string that accelerated forward abruptly, and his hand was only a millimeter away from the light and shadow. But at this moment, the light and shadow sank extremely fast, and flew in the opposite direction from the side.

And Xu Fei is the first time to use this kind of strength method to perform the body method, and he is usually used to using the "King Kong is not bad" to strengthen the speed to perform light skills, but this time he was caught off guard, and his body hit the tower wall heavily.

This time, because the speed was too fast, the force of the impact was extremely strong. However, the material of the tower's walls looked unremarkable, and the violent impact did not damage it in the slightest.

This kind of "condensation" method requires the output force of the run-in force, as well as the cooperation of one's own body method, which is not an overnight thing. Xu Fei was not discouraged, and with the strength under his feet, he retracted his strength slightly, and hurriedly chased after the light and shadow elf.

With a gentle explosion, Xu Fei's body no longer had the feeling of sluggishness that needed to stop, and his body seemed to be unconstrained by the laws of the world, rapidly shifting in this tower. Gradually, the effect of the light and shadow spirits changing direction became smaller and smaller, and the distance between them was less than two feet.

In this situation, Xu Fei was not in a hurry to capture the light and shadow, and slowly went from only launching air bombs with his feet to the point where he could change the direction of his body by launching air bombs with both hands. This feeling of being able to change the position at will made Xu Fei very happy.

Because the master duel misses by a fraction of a second, with this method of using energy, you can avoid the original unavoidable attack and pursue the enemy who couldn't catch up before. And because of the sudden change in body shape, it can greatly surprise the opponent, and it is a stunt to defeat the enemy.

Even the strength of the Iron Eagle Jinpeng that can fly through the air has to change its position according to the air flow, and it cannot be operated as you like. And after this kind of capture of light and shadow by Dugu's predecessors, he once realized the Tao and had a new understanding of the ingenuity of the use of energy.

Under the slow and deep understanding, Xu Fei realized that not only the end of the body could burst out of the air bomb shock, but also the limbs and hundreds of bones could act according to the law as long as there were air holes. This can be unpredictable when shooting, and can react extremely quickly in the slightest millimeter.

Looking at the light and shadow spirits that flew and jumped skillfully, they were no longer as confusing and difficult to capture as they had just seen. I just feel that no matter how quickly the light and shadow change the position, it is in line with this method of condensation.

Xu Fei's body was like electricity, and he controlled the air bomb explosion with his legs and left hand to keep a distance from the light and shadow elf, and then gently stretched out his right hand to catch the light and shadow.

When the hand was only more than two inches away from the light and shadow, the light and shadow elf suddenly accelerated, jumping around wildly, and the complex trajectory was dazzling. However, in Xu Fei's eyes, these changes were in line with the principle of the condensation change method, and one right hand erupted through the tiny air bullets on the air holes, always keeping pace with the light and shadow.

Two inches, one inch, half an inch! At the moment when he was about to succeed, the group of light and shadow spirits suddenly rose into the sky.

Quietly suspended in the air at a height of three feet.