Righteousness and courage have always been the true colors of Qin Feng and the others, and of course, this time is no exception.

"Qin Feng, since you have discovered the problem of the third underground floor, how should you deal with it now?" Siyu said as he kept thinking about the matter of Fang Cai.

"Yes, what should I do?" Zhengqing sighed with his hands outstretched.

"Hmph, do you want to know how to crack this mystery?" Hearing this, the corners of Qin Feng's mouth were slightly hooked, and a hint of joy appeared on his face.

"Okay, don't sell it, let's talk about it!" Siyu said hurriedly.

Qin Feng smiled slightly, his eyes looked at the red mark on the wall, as if he had found some flaw.

"See, there must be a mystery in this red mark, and I can know the mystery with just a slight tilt of my eyes."

As he spoke, it was as if he had returned to the moment when he defeated the god of war De Mengs, and his high-spirited and high-spirited confidence returned.

Siyu saw him confidently puffing out his chest, and the fear in his heart was a little less at this moment.

"How can I be trapped in such a place, I can crack this mechanism with a snap of my fingers."

After speaking, Qin Feng pulled out the Immortal Cloud Sword and slid it into the red circle on the wall twice, and suddenly the bricks and tiles on the ground changed color, and after flashing three more times, everything returned to normal.

"That's it!" he looked up and smiled.

At the same time, the three of them strode forward with their legs open, talking and laughing along the way, and there was no abnormal phenomenon.

After a while, when she reached the bottom, Siyu suddenly felt a slight coolness above her head, she looked up at the ceiling, and instantly found that a huge hole the size of a spaceship appeared above her head, and it was accompanied by a mysterious power illuminating the entire hall.

"Look, what is this?" she said, holding out her right hand, pointing vertically at the giant hole.

Zhengqing raised his head and asked curiously: "What is this thing? Could it be that it is another disaster?"

Qin Feng explained: "It shouldn't be, but if it's really a disaster, we are still afraid that it won't work."

As soon as the words fell, an oval-shaped black giant insect slowly descended from the giant hole, with a large mouth that could kill people, and black eyes like a cowpot.

That's right, the giant insect that came down this time was the black Gu insect that Qin Feng Siyu and the others encountered in the bamboo forest in Liangzhou before, the fire in its eyes and the thunderous wings were very familiar to the two people present.

Under the giant hole, the black Gu worm flew by, its speed was as fast as lightning, and it instantly attacked the three of them, and with a "rubbing" sound, its wings touched the ground and made a collision sound.

Seeing the black Gu worm attacking Si Yu, Qin Feng rushed forward, knocked her down and pulled her up again, although the two of them dodged this raid, but in the face of the sudden black Gu worm, they didn't think of a way to deal with it for the time being.

He patted the dust on his sleeve, looked at Siyu with a helpless expression, and asked, "Are you okay?"

"It's okay, what about you?" Siyu asked rhetorically.

"It's okay, when I use the Qiankun Bagua Mirror to deal with it, I don't know what the effect will be? I didn't expect the black Gu worms in the bamboo forest to appear here!"

After speaking, Qin Feng took out the Qiankun Bagua Mirror from his pocket with his left hand, lifted the true qi in his body with his right hand, and fused the aura and true qi into the magic weapon, and suddenly flashed a trace of fluorescence of "crystal".

He hurriedly pushed it forward, trying to repel the black Gu worm's confusion, but when the magic weapon was aimed at it, the spirit in the mirror quickly swept forward, and it immediately fought back with the same magic power, and suddenly there was a blasting sound all around, the bricks and tiles shattered, and the walls collapsed, this array was very powerful.

Qin Feng took three steps back, a breath of heat lightly came out of his mouth, he scolded Siyu Zhengqing to step back, preparing to deal with the black Gu worm in front of him with the strength of one person, although it was difficult, but he thought that he would have a certain chance of winning.

He raised his Immortal Cloud Sword and stared down at the light energy on the Qiankun Bagua Mirror, just looking for the right time to attack it.

Siyu Zhengqing and the others were leaning along the wall at the moment, and in order not to disturb Qin Feng's battle, they temporarily retreated to the third floor of the staircase.

Qin Feng's lips moved slightly, his tense facial muscles could not be relaxed for a moment, watching the beads of sweat on his forehead roll down, he seemed extra cautious in his heart at the moment.

Faced with the comeback of the black Gu worm this time, he had no fear, watching the laser techniques in the eyes of the black Gu worm shoot one after another, he casually flipped a few heels and easily dodged.

A moment later, a hurricane flapped between the black Gu worm's wings, and the hurricane seemed to be endowed with a trace of magic, and when it opened its wings, it was accompanied by bursts of fluorescence in its wings.

Due to the wind, Qin Feng's legs seemed to be hindered by layers for a while, and it was difficult to move.

"Ahh......h

He immediately shouted, and then held the Qiankun Bagua Mirror and the Immortal Cloud Sword to his chest.

The hurricane made his right heel temporarily unable to support it, and he forced his left foot to stand on tiptoe to carry the hurricane, but the backward inclination of his body doomed him to not last long.

"Maybe you can use the Celestial Dragon Divine Leg to severely damage it"? His mind turned quickly, since he couldn't use magic weapons and artifacts under the hurricane at the moment, then he could use his legs to attack the general.

Qin Feng gritted his teeth, a trace of white light suddenly appeared in his eyes, he tilted his head and looked ahead, seeing that the black Gu worm was still fanning the wind at the moment, but for some reason, he felt that the wind was much weaker now than before.

He pinched his face, and suddenly felt a slight pain on his face, "No, if it's a hallucination, how can it hurt? Could all this be true? The hurricane of the black Gu worm can't hurt me at all?"

"I see!" When he heard the news, his whole body was filled with confidence.

"Come on, Celestial Dragon Legs". He immediately widened his eyes and lunged forward, staying in front of the black Gu worm, and striking at it with a whirling twist and tail swing towards it.

The black Gu insect was not in a hurry, and when it saw the Heavenly Dragon Divine Leg attacking it, it immediately blocked its wings and protected its body, thus forming a huge defensive cover, and the attack of the Heavenly Dragon Divine Leg lost its effect when it hit the defensive cover, and it was carried over in this way.

After a pillar of incense, the black Gu worm saw that Qin Feng did not continue to attack it, so it opened its defensive cover.

At this time, a stream of green liquid flowed from its mouth, and the color of its entire body gradually changed from black to green.

In fact, this green liquid contains a very acidic substance from the other world, this acidic substance is the nirvana that the black Gu insect has for thousands of years, no matter what this substance touches, the people and things that are touched will be turned into ashes by its strong corrosiveness, thousands of years ago, it was precisely because there were killer demon insects like black Gu insects in the demon world, and the lords of all races did not dare to trespass into the black hole.

And at this moment, for the comeback of the black Gu worm, Qin Feng had no way out, he could only fight with him to the end.

If you want to know the story of the next chapter, please pay attention to Chapter 51 of the Legend of the Sword of Xianyun Volume 3 "The Comeback (2)"