Cao Muyuan was very anxious, but he could only face this fact.

There are two choices in front of him, one is to defeat Lu Buqi underground, and the other is to sneak out of the ground and defeat Lu Buqi in the air or get rid of Lu Buqi.

However, it is very likely that there are other crystal soul stages in the air to follow, and after thinking about it, Cao Muyuan still chooses to face Lu directly underground.

"I have no grievances with you, what are you stopping me from?" Cao Muyuan shouted angrily, and while his body was performing the "Earth Wolf Dive", he took out his hand-taking weapon with one hand.

The Earth Exterminator Blade was a huge two-handed combat knife, which was held by Cao Mu Yuan with one hand, and when it slashed diagonally, it seemed that there was no resistance in the ground.

"You're fucking bullshit, Lao Tzu's wanted mercenary mission must be your bastard Fabu!"

Lu Buqi cursed, which was why he would take the initiative to ask Ying to pursue Cao Muyuan.

In the face of Cao Mu Yuan's attack, Lu Buqi temporarily chose defense, took out the Xianyou Ding, compressed the size of the Xianyou Ding, and reduced the impact of Tu Yuan's resistance.

Lu Buqi doesn't like to fight underground, even if he has the Yaoluo Earth Spirit, he has always felt that fighting underground is more awkward than underwater.

You must know that whether it is water escape or earth escape, no matter how the principle of the spell is cast, the more advanced one is the truth, that is, the transformation of Yuan Force. And like that kind of splitting water and breaking through the ground, it is a relatively poor escape technique.

This principle will also limit the speed at which the caster can escape, after all, if the speed of your Yuan Force transformation can't keep up, you won't be able to run away so fast, after all, every inch of land has a relative Earth Yuan Force.

And when you think of fighting underground and underwater, then not only must you maintain your state of retreat, but also accurately provide space for the transformation of Yuan Force for each spell and fighting skill you release, otherwise the influence of the laws of nature alone will be enough to quickly dissipate energy.

The simplest reason, if there is no retreat technique to rely on, such a powerful sword move as "Blood Sword Wuji" is like the ground, I am afraid that it can only penetrate more than ten zhang and have no spare strength.

If there's a magic weapon that allows you to ignore or reduce the resistance of the Earth Element underground, then this is definitely a super boost for Escape Warfare.

And the Earth Exterminating Blade is such a magic weapon, Cao Mu Yuan's Escape Technique and Underground Battle, all with it, can reduce the resistance of the earth element by five or six percent.

The Earth Exterminator's attack slammed into the golden light of Xianyou Ding, which could only make the golden light sway, but it could not break through the defense.

Estimating Cao Muyuan's attack, Lu Bu gave up his heart slightly, and there was no situation that was outrageously powerful. However, this cultivation of this grass and wood yuan is definitely much higher than that of Xue Shuang, after all, it is not easy to have this kind of situation from the attack that he issued when he is seriously injured.

Seeing his own attack, the effect on Lu Bu was not good, and the stone in Cao Muyuan's heart was heavier.

But there is no way, since there is a roadblock, it must be killed, otherwise don't try to escape life.

So Cao Mu Yuan began his crazy attack, and the Earth Exterminating Blade attacked Lu Bu after one move, one after another.

In terms of the speed of the release of the fighting skills, the reason why the Earth Destroying Blade ignores the resistance of the earth element is fifty percent, and the grass and wood yuan release the fighting skills very quickly, if Lu does not give up and Cao Mu Yuan to fight and attack, then the defeat must be Lu does not give up.

Therefore, Lu Buqi has been defending from the beginning, and it has always become a passive defense, of course, if Cao Muyuan's offensive is stopped, then Lu Buqi will be able to seize the opportunity.

Because he is very proficient in the control of Xianyou Ding, Lu Buqi seems to be very relaxed, it is nothing more than a mana supply. Therefore, Lu Buqi, who was attacked, just kept watching Cao Muyuan's attack intently, and looked at him and vaguely found a phenomenon, that is, every time the Earth Extermination Blade swung it, there seemed to be a kind of fluctuation that was very similar to the fusion of the Heaven and Earth Yuan Force of the Mad God Technique, and there was a vague frequency that resonated with the environment.

And just as Lu Buqi continued to ponder, Cao Muyuan stopped attacking. Because Cao Muyuan saw that Lu Buqi blindly defended, and also came back to his senses, although Lu Buqi was relatively strong in earth escape, he lacked experience in underground battles and could not pose too much threat to him.

As a result, Cao Muyuan began to give up and leave without giving up.

Lu Buqi was vaguely discovering some tricks and rules of fighting underground, and he hadn't studied it yet, how could he just let Cao Muyuan leave?

Therefore, Lu Buqi launched an attack, just like beckoning Cao Mu Yuan to stay, and the fish intestine sword bloomed with a bloody shock, separating the soil layer and sealing Cao Mu Yuan's way forward.

The violent blood-colored sword qi startled Cao Muyuan, and his figure was stunned for a moment, and Lu Buqi blocked in front of him again. Cao Mu Yuan naturally returned to color immediately, and the Earth Destroying Blade once again emitted a strong sword aura, attacking and killing Lu without giving up.

It's a pity that Cao Muyuan didn't pay attention to him when he attacked, but Lu Buqi's eyes lit up, and as he attacked one after another, Lu Buqi's eyes became brighter and brighter.

In this way, when Cao Muyuan wanted to leave, Lu Buqi would definitely stop him, and when he attacked, Lu Buqi stopped to defend. Like a lover who is reluctant to separate, Lu Bu has to leave the grass and trees behind.

However, as time went by a little bit, while Cao Muyuan was worried in his heart, he also felt that something was wrong, that is, he found that Lu Buqi's sword qi attack was much more powerful than the previous moment, as if the underground earth element resistance suddenly became weaker for Lu Buqi.

Of course, Cao Muyuan didn't think that the earth would favor one over the other, so it would be like this, that is, what Lu Buqi had already realized at this meeting.

And when Lu Buqi suddenly changed his strategy and attacked against attack. Cao Mu Yuan was surprised to find that Lu Buqi's sword qi release speed was faster than the sword qi he used to destroy the blade.

Yes, Lu Buqi realized it, he inferred from the direction of Cao Muyuan's method of using the Earth Exterminating Blade to fight underground, and experienced a frequency unique to the pulse of the earth.

Just as Lu Buqi can sense the frequency of the wind in the air with the help of the wind, and can feel the frequency of the fire in the flames, with the help of the fire, at this moment, Lu Buqi can feel the pulse of the earth and can use the earth.

Lu Buqi called it "the power of the earth".

After feeling the power of the earth, Lu Buqi's mood was extremely happy, because he suddenly felt that the soil was so fragrant, and the resistance of the earth element was not non-existent, but was reduced to the lowest, if you had to measure the proportion, it would be at least more than sixty percent lower than before.

When Cao Muyuan was shocked by the change in Lu Buqi's sword qi casting, Lu Buqi actually cast the "Ten Steps and One Kill" underground.

Ten steps and one kill, this kind of high-speed impact skill is different from the thin energy flow of sword qi and sword qi, just like moving on the ground, or moving at high speed, if it is not for the powerful underground fusion ability, it is impossible to perform this kind of fighting skill.

Therefore, the Caomuyuan offensive has just been completed, and the momentum cannot be stopped, so it can only be attacked by attack.

"When!" There was a crisp sound, and the fish intestine sword and the earth exterminating blade were set together, and the chaotic mana that Lu Buqi burst into flames and the beast rage that shook out from the grass and wood abyss escaped in all directions underground.

"Dangdangdang......"

The sound of a series of gold and stone clashes seemed a little dull underground, but this was the most white-hot battle situation between the two masters.

The battle group of the two of them moved underground little by little, and on the ground, the residents of Huoyun City were nervous about the coming of war, and they had no idea that about twenty feet under their feet, there were two strong men of equal strength who were fighting bloodily.

In the blink of an eye, the two exchanged more than 20 moves, and more than a dozen wounds were added to Cao Muyuan's body, leaving only his right hand, obviously unable to stop Lu Buqi's violent and changeable offensive.

Especially when Lu Buqi relied on the "Snake Demonic Qi" and "Hua Tai Chi" to use the "Sword Shadow Vientiane" to strangle Cao Mu Yuan, he could only turn from attack to defense.

But Cao Muyuan couldn't hold it, and the wounds on his body were added more than a dozen in an instant, some of which were deep and visible, and even had broken bones.

Cao Muyuan regretted a little at this time, and chose to entangle with Lu Buqi underground.

"If I had dived to the ground and broken through by flying before, I'm afraid I would have been in my army of grass and trees by now, right?" Cao Mu Yuan licked the corners of his dry lips and began to think about a way out.

However, Lu Bu gave up the powerful offensive, but told Cao Muyuan that he had no way to retreat.

The ubiquitous sword qi made Cao Mu Yuan not even dare to escape from the crystal soul stage's most promising escape method for the crystal soul stage, he didn't think that the weak crystal soul would be able to escape from the strangulation of the sword shadow after leaving the body.