Xin Mu looked at Dieyi'er, "Are we still going in?" He expected that there must be nothing behind this door, he didn't want to waste any more time, he still had to look for the pill, and then go to the Sihe Hall to see the situation.

Dieyi'er sighed softly, if you don't see what you want, everyone will feel lost, and she is the same, but the door is right in front of her, if you don't go in to have a look, you will always feel uncomfortable, "Brother Amu, since you are here, it is better to go in and have a look." ”

"Okay, then let's go in and check in!" said Xin Mu, walking up with the red knife. The two of them carefully probed the stone door, up and down, left and right, there was no knife-like protrusion, only a thin and thick gap.

Xin Mu looked carefully at the gap, "This seems to be in the shape of a key, Yi'er, this door looks like it needs a key to open." We don't have the key, should we cut it open?" he said, shaking the knife in his hand.

"Wait! ”

"What's wrong?" Xin Mu turned his head to look at Dieyi'er, who was staring at Shui Lingling's big eyes. "Brother Amu, your knife. Dieyi'er pointed to the knife in Xin Mu's hand.

"What's wrong with my knife?" Xin Mu looked at the Heavenly Fire Dragon Knife in his hand, the blade was not sharp, the back of the knife was the dragon's rugged back, and the hideous dragon head was under the handle of the knife he was holding. Although this knife has a strange shape, it has always looked like this, and Dieyi'er has never seen it, so why make a fuss?

"The shape of this knife is a bit like this gap. ”

Xin Mu looked ignorant, he didn't understand the meaning of Dieyi'er at all, one was a seam, the other was a knife, how could it be a little similar? Just like a man's work and a woman's flower, they are not the same thing at all.

"Brother Amu, insert it. Dieyi'er said anxiously. Xin Mu laughed secretly, Yi'er, you are too open, you even said words like "insert", are you teasing me? He suddenly remembered Dieyi'er's delicate body like water, and remembered the joy under the Thousand Shadow Lake, and an evil fire suddenly rose in his body, and his lower body jumped twice. He really wanted to push Dieyi'er to it immediately, and there was a cloud rain of mountains and rivers changing color.

"Brother Amu, what are you doing in a daze, you stick your knife in and take a look!" said Dieyi'er as she pointed to the gap next to the stone door. She didn't understand why Xin Mu was suddenly in a daze, but judging from Xin Mu's burning gaze, this guy must not have thought of anything good.

"Ahh He nodded, leveled his hand, and inserted it into the gap.

The Heavenly Fire Dragon Knife and the gap just fit, and the one-meter-long Heavenly Fire Dragon Knife slowly entered, rubbing against the gap, making a slight snorting sound, and inserting deeper and deeper until the blade was completely submerged.

Could it be that the Heavenly Fire Dragon Knife is really the key to this stone door, it is impossible! Xin Mu looked at the Heavenly Fire Dragon Knife that was deeply inserted, and his heart was full of wonder, this knife was brought out by him from the distant Fire Cloud Country's Liuyan Red Prison, how could it be the key to a stone door in the Sihemen Library Building?

"Titicacaca......" The stone door opened with a bang, giving Xin Mu an unquestionable answer.

Xin Mu sighed secretly, pulled out the Heavenly Fire Dragon Knife, and looked at it carefully, could it be that this knife has anything to do with the Sihe Gate? Maybe any knife can open this stone door, it is completely his own overthinking.

Xin Mu and Dieyi walked into the third floor.

Instead of the expected darkness, this layer of white light is faint, and the roof and walls are inlaid with unknown glowing stones, illuminating the entire space. This space is much smaller than the two floors below, only half a mile in circumference. There are no stone bookshelves, so it looks unusually spacious.

The empty room was filled with only three white jade pillars standing in the middle, each with a red circle of light. Like three lamps that never go out.

Xin Mu and Dieyi quietly walked over, only to see red scrolls displayed in the red circle of light. Three red apertures, three red reels.

"Could this be the three martial arts?" Xin Mu asked Dieyi'er. Dieyi'er nodded, "Well, and it should be the best martial arts technique in Sihemen, otherwise it wouldn't be displayed here." ”

"Great!" Xin Mu cheered, reaching for it. "Po!" The red circle of light suddenly flowed, emitting a wave of vitality, flicking Xin Mu's hand directly away, shaking his arm numb.

"Yo!" Xin Mu cried out in pain. Dieyi'er immediately picked up Xin Mu's arm and looked it up and down, "Brother Amu, is there anything wrong?"

"It's okay! This red aperture is very strange, it can bounce my hand open, how can we take out the contents of it?" Xin Mu looked at the aperture of red light and couldn't see anything famous. Dieyi'er shook her head, there is no good way.

"Cut! Lord Wuxuan will come and take a look!" Xiao Wu said as he floated out of the ring. Xin Mu looked at the ring on his hand, the ring that Xiao Wu called the Dragon Soul Ring. Xiao Wu seems to be able to enter and exit the Dragon Soul Ring freely, just like entering and exiting his own home, and Xin Mu can't stop it.

"Lord Wuxuan, do you have a way?" Dieyi'er's face was full of surprise, just now in the quadrangle, Xin Mu turned Xiao Wu, Xiao Jin and Xiao Ma away, she didn't have time to ask. Now she found that Xiao Wu actually floated out of Xin Mu's thumb, and immediately approached Xin Mu's thumb to look, and vaguely saw a transparent ring, and then she realized that Xin Mu had a ring in his hand that could store things.

Xiao Wu didn't answer, circled around the red aperture, and said, "Cut! You guys are so stupid! Without Lord Wuxuan, it's really hard for you to move an inch! This seems to be a small formation, taking into account both defense and attack. It's amazing how you can set up such a precise and small formation!"

Xin Mu and Dieyi'er looked at Xiao Wu, who was the head of the Tao, and knew that he was not talking nonsense, and what he said was not far from ten, Xin Mu asked, "How to crack it?"

"Hmm!" Xiao Wu touched his chin and thought for a moment, and said, "You try to cut it directly with a knife!"

Xin Mu stared at Xiao Wu and asked the latter with his eyes, are you sure? Xiao Wu nodded solemnly. Xin Mu thought to himself, there is no other way at the moment, it is good to try to break the formation violently, but you still have to control the strength, in case you use too much force, I am afraid that it will not be good to chop the martial arts inside into pieces.

Xin Mu carried out a little bit of vitality, raised his knife and slashed down, slashing at the red circle of light on the stone pillar. "Po!" The red light on the aperture was sheng, shining brightly, and a powerful vitality was centered on this aperture, which was circular and spread out like water waves.

"When!" the Heavenly Fire Dragon Knife flicked off, and the force of the counterattack slammed into Xin Mu, knocking him back five or six steps. The entire library shook slightly, and the roof was covered with dust.

Xin Mu stabilized his body and scolded: "Little fart, your idea is awesome! Do you want us to be buried here!"

Xiao Wu's mouth bent down, her face full of grievances, "Fluttershy, look at him who has no conscience, I will help him find a way, and he will scold me!

Dieyi'er hurriedly stroked Xiao Wu's head and said gently: "Xiao Wu is good! You should be scolded, who told you to make a fuss!"

"Cut! How can I follow you two heartless guys, I'm unlucky!" Xiao Wu didn't feel pity in front of Dieyi'er, and immediately shook his face, pretending to be extremely sad, and carefully studied the small formation on the jade pillar, "This formation is very cleverly set up, it can counterattack and attack, it seems that a hard attack is not good! How can I take out the things in the formation without attacking? ”

Looking at Xiao Wu's elated appearance, Xin Mu suddenly remembered that he also knew how to have spiritual power, and he was also a seven-seal rune master, and the seven-seal rune master could completely take things from the air. Xin Mu nodded, feeling that Xiao Wu's idea was quite reliable.

The colorless and transparent spiritual power quietly poked out, reached the red aperture, and without encountering any resistance, it smoothly entered the aperture and landed on the red scroll inside the aperture.

The red scroll moved slightly. Xin Mu smiled slightly, it seemed that there was a play, he immediately used the move of "Lingbo Ancient Xuan" to urge the spiritual power of the Mud Pill Palace to gush out, wrap the red scroll, and try to lift it.

The red scroll rolled twice in the red light array, and finally left the jade pillar, being pulled by the invisible spiritual power, slowly floating, floating higher and higher.