Daoist Huixian smiled and explained: "Your Jiugu is the descendant of the Tang family, the first formation family in Northern Xia, when the Northern Xia Palace was first built, it was the first generation of the Tang family master who asked to help lay out the formation, so if you want to blend into the Northern Xia Palace this time, you have to rely on your Jiugu's help." ”

Tang Jiugu said: "Don't listen to this bull-nosed nonsense, I am no longer a member of the Tang family, but the formation of the Northern Xia Palace is really difficult for me, you wait a few days, and when I am ready, I will take you in with me." ”

Duan Chen was overjoyed when he heard this, and hurriedly hugged his fists and said, "Thank you, Aunt Jiu." ”

Tang Jiugu waved her hand, and said after a moment of silence: "I have to help Huixian make a pair of puppet prostheses in the past few days, plus I have to prepare some formation-breaking equipment, not to mention that it will take three days before I can leave, you must also prepare well in these three days, the Northern Xia Palace is different from other places, it is really going to be exposed, and it will not be easy to come out when the time comes." ”

Duan Chen nodded solemnly and said, "Juniors understand. ”

Tang Jiugu nodded slightly, and then pushed Daoist Huixian back to the inner hall, while Duan Chen also returned to the room and began to prepare for the action three days later.

The first is to draw spirit runes, such as fire spirit runes, ice spike runes, thunderstorm runes, etc.

Although it was difficult for an attack rune of this level to threaten a monk above the late stage of foundation building, if Duan Chen was given enough time to cast a rune or set up a rune array, the result would be a different matter.

In addition, the paper figures that cast the Phantom Rune Body Technique also need to be re-refined.

However, what Duan Chen wants to refine is not the most basic paper figure in the past, but a paper figure that can truly transform into a human form and has a certain combat ability.

Of course, refining such a paper figure is not simple, the probability of failure is extremely high, Duan Chen spent two days, and only three ways were refined.

As for the last day left, Duan Chen was under the guidance of the Seven Demon Lords, trying to refine the fusion spirit rune.

The so-called fusion rune is actually to fuse two spirit runes with different attributes together and draw them into one spirit rune, such as drawing the fire spirit rune and the thunderstorm spirit rune into a thunder fire rune, or drawing the wind blade rune and the thunderstorm rune into a wind and thunder rune.

This kind of fusion spirit rune, because it fuses the power of two runes with different attributes, the power that can burst out is far beyond any kind of middle-level spirit rune, which is comparable to that of a high-level spirit rune, so even if it is a foundation building Great Perfection monk, if he is not prepared, he will suffer a big loss.

And if there were enough of them, they could even threaten the False Dan Monks.

In fact, there was no way for the Seven Demon Lords to let Duan Chen refine the fusion spirit rune, because with Duan Chen's current rune attainment, it was not enough to draw a high-level spirit rune, so they could only settle for the next best thing and try to draw the fusion spirit rune first.

After all, Duan Chen had already mastered all the mid-level runes that had drawn fusion spirit runes, and the only problem he had to solve was how to balance the rune power contained in the two different runes.

This question is not easy to say, it is not difficult to say, Duan Chen has the guidance of the Seven Demon Lords, and he quickly mastered the method of balance in it, and successfully refined a fusion spirit rune.

However, due to time constraints, it wasn't until the third day of action that Duan Chen also refined three Thunder Fire Talismans and Two Wind Thunder Talismans.

At this time, the sky had completely darkened, and after Duan Chen and Tang Jiugu were ready, they immediately bid farewell to Daoist Huixian and walked east along the streets of the city.

The Northern Xia Royal City is so big, before leaving, Duan Chen had already heard Tang Jiugu's introduction, and knew that the entire city was mainly divided into five major areas, namely Dongcheng District, Xicheng District, Nancheng District, Beicheng District, and the Northern Xia Palace located in the center.

This Northern Xia palace covers a wide area, it is said to be a royal palace, but the area is almost comparable to a small city.

Previously, Duan Chen's Xicheng District, where they were located, was not even half the size of the Northern Xia Palace.

However, it is precisely because the Northern Xia Palace is too much to do so, so in terms of guarding the Northern Xia Palace, it is necessary to lay out a large number of formations and mobilize a large number of forbidden monks to patrol.

It is said that there are as many as 100,000 monks in the forbidden army of the Northern Xia Dynasty, which is the most powerful force in the Northern Xia Dynasty.

As for the false monks, because there are only a handful of them, they are not counted among them.

Moreover, with the status of a false Dan monk, it is unlikely that he will be sent to patrol the night.

At this time, Duan Chen had already followed Tang Jiugu to lurk near the west palace wall of the Northern Xia Palace.

I saw that on the palace wall, every dozens of zhang distance, there was a qi refining monk wearing hard armor and holding a sharp magic weapon, and below the palace wall, every half a burnt incense time, there would be a team of forbidden army monks passing by, plus the formation laid around the palace wall, such a guard could not be described as not strict.

Duan Chen immediately retracted his gaze and secretly said, "Ninth Aunt, what should we do next?"

Tang Jiugu secretly replied: "Although the formation prohibition of this Northern Xia Palace is set by the ancestors of my Tang family, but after many years, no one knows whether the Northern Xia royal family has changed these formations, let me see it first." ”

At that moment, she took out a compass full of array flags from her storage bag and began to circle around the entire Northern Xia Palace.

......

Northern Xia Palace, Harem.

Just when Tang Jiugu took Duan Chen to check the guardian formation of the entire Northern Xia Palace, in a majestic palace in the harem, there were two figures, one black and one white, sitting facing each other at this moment.

On closer inspection, both figures had masks on their faces.

Among them, the black figure had a grimace mask on its face, and its figure was shrouded in an incomparably wide black robe, the surface of the robe was covered with fine golden patterns, and a faint demonic aura was slowly diffusing from the robe.

The white figure sitting opposite the black-robed figure was a long-haired woman with a golden fox mask on her face, dressed in a white robe with a flash of spiritual light, which formed a sharp contrast with the black robe on the black-robed figure.

I only heard the white-robed woman say lightly: "I heard that Grandma Tong in Kunshan accidentally missed a few days ago and let go of the four rings." ”

The black-robed figure sneered: "There is not enough success, but there are more failures." ”

Although the voice was a little low, it could still be heard as a woman's voice.

The white-robed woman said lightly: "I called you over tonight, not to investigate Kunshan Tong's dereliction of duty, but to ask you how things are ready?"

The black-robed woman said coldly: "Everything is going according to plan, before the Five Dynasties will meet, my people will definitely complete what we need to do according to the plan, you don't have to worry about this." ”

The white-robed woman nodded and said, "I am naturally relieved that you are doing things, but this time, Kunshan Tong's grandmother may not be able to participate, and the adults ordered her to hunt down the four precepts and atone for her sins." ”

The black-robed woman snorted coldly and said, "Your Excellency is too merciful. ”

After a slight pause, he continued: "If Kunshan Tong's grandmother can't come to participate, who will take her place?"

The white-robed woman said lightly: "I heard that Demon Dust Wind is already on the way here, so it is no surprise that he will take the place of Kunshan Tong's grandmother." ”

The black-robed woman seemed to be a little dissatisfied: "We have been planning in the Northern Xia Dynasty for so many years, and we are about to succeed, he is not good to stay in the Great Wilderness Dynasty to operate, and now he is coming to Northern Xia, I am afraid that he is going to rob us of credit." ”

The white-robed woman continued: "Having said that, someone must always take the place of Grandma Tong in Kunshan, even if it is not Demon Dust, it will be someone else, and the result is no different for us." ”

The black-robed woman sneered: "I can't think of a little strength to sit back and enjoy it?" It's not so easy, Penglai Immortal, you can swallow this breath, but I can't swallow it!"

Penglai Immortal Madam looked at the Northern Demon Grandma with a calm face and said: "What if you swallow it, what if you can't swallow it?" The demon god will be the demon god of the demon clan, you and I are from the human race after all, do you still expect the above to exclude the demon dust wind from this operation for you?"

When the Northern Demon Grandmother heard this, the palm hidden under the black robe was immediately clenched into a fist, and the bone finger even became a little white because of the excessive force.

But she knew very well that Penglai Immortal was right.

Within the same level of the demon gods, the status of the demon clan is indeed above the demon cultivation, and the same is true when it reaches the Jindan realm, so whether she swallows this breath or not, it is useless.

Seeing that she didn't speak, Penglai Immortal continued lightly: "A smart person does smart things, if he wants to get a piece of the pie, then let him share it, we just need to do our part, adults will see it in their eyes, and they will be rewarded for their merits afterwards." ”

The Northern Demon Grandma is not a person who doesn't know what to do, so she calmed down at the moment and said: "You're right, but Kunshan Tong's grandmother poked out such a big basket this time, I'm afraid it will affect the two of us." ”

Penglai Xian smiled lightly: "You don't have to worry about this matter, running a four precepts will not affect our overall plan at all, even if Kunshan Tong can't catch the four precepts, I have prepared other backhands here." ”

The Northern Demon Lady said: "Since this is the case, then this matter will be handed over to you to deal with." ”

Penglai Immortal nodded in response and didn't say anything more.

The empty hall immediately fell into silence.

At this time, Tang Jiugu had already taken Duan Chen around the entire Northern Xia Palace, and finally the two of them returned to their original place.

Seeing her stop suddenly, Duan Chen couldn't help but ask, "Ninth Aunt, what is the result of the investigation?"

Tang Jiugu's face was slightly solemn and said: "Sure enough, as I expected, the Northern Xia royal family has really made changes to the big array in the past hundreds of years, but fortunately, this change has not completely abandoned the previous formation layout, otherwise I may not be sure to bring you in tonight." ”

After a pause, she said, "But before we can do that, we have to dig a tunnel that leads to the city wall." ”

Duan Chen nodded when he heard this, and was about to make a move, but was unexpectedly stopped by Tang Jiugu.

I only heard Tang Jiugu say in a low voice: "Don't worry, wait until I break the formation below." ”

Duan Chen was shocked in his heart and asked, "There are also formations underground?"

Tang Jiugu took out dozens of formation flags and inserted them into the ground, and said: "The formation below is connected to the entire city protection array, in order to prevent someone from digging a tunnel to sneak into the palace, if we don't crack this formation first, I'm afraid that before we can sneak into the palace, we will already be discovered." ”

Duan Chen nodded, and saw that Tang Jiugu had already inserted the last array flag into the ground, and continued: "Okay, I have now sealed the formation spiritual power vein in this area with the array flag, and if we start digging now, we will not trigger the great array of city protection." ”

The two of them immediately began to dig tunnels in the direction of the west wall of the Beixia Palace.