Chapter 968: Rat Hole City
After trying several calculus techniques in a row without any effect, and even his ability to see through walls was useless, Zhang Qian finally gave up on searching for the whereabouts of the Sword-Devouring Ancestor and began to think of other ways. This matter had to be planned out before taking action, otherwise there would be no possibility of success if he rashly searched.

After thinking for a while, he decided to enter the boundless wilderness to see if there were any clues about the Heavenly Demon Palace established by the Sword-Devouring Ancestor, but he did not have high expectations.

Swish!
Zhang Qian used the rainbow transformation technique and drew a red rainbow to fly towards the boundless wilderness.

At his current level, with his immortal body, he can walk sideways in the boundless wilderness without any danger.

His terrifying energy and blood power made it so that the demons in the boundless wilderness had no intention of provoking him.

When he flew above the boundless wilderness and looked down for a while, he discovered that in all the dangerous places in the boundless wilderness, huge cities like fortresses appeared without his knowing when.

There is not a single human being in the giant city. It is filled with demons whose power cannot be underestimated. Even more are the soldiers of the ancient royal family guarding these giant cities. It seems that the Sky Fox Queen is planning to run the boundless wilderness as her base camp.

Ironically, when the ancient royal family was born, the King of Golden Monsters appeared in the sky above the boundless wilderness, and had a fierce battle with the Sword-Eating Ancestor. He was eventually subdued by the Sword-Eating Ancestor. In the blink of an eye, the Sword-Eating Ancestor and the ancient royal family army became one force.

These giant cities are not large in area, but their walls are extremely high. Zhang Qian can even sense the dense array restrictions within the walls of these giant cities. He flew higher, approaching the ninth heaven, and looked down. Suddenly, he saw a flash of inspiration and discovered that these giant cities located in dangerous places in the boundless wilderness seemed to be connected to each other. The location of the giant city was like the base of an unparalleled formation. There were more than ten thousand giant cities in the entire boundless wilderness. If all the giant cities were the base of the formation, then this formation should be an extremely terrifying one.

What is strange is that the construction of so many huge cities did not alarm anyone in the Thirty-Six States, nor did it attract any attention.

"It seems that this is also the trump card of the Sky Fox Queen. So many huge cities are interconnected, forming a large formation that can cover the entire boundless wilderness. Such a huge formation has never been seen before. Could it be the secret formation of the Great Xia Immortal Dynasty?"

After speculating for a while, Zhang Qian slowly disappeared and began to fly towards the depths of the boundless wilderness.

While flying, he was also exploring the movements below. The deeper he went, the more monsters he sensed. At the same time, the giant cities became bigger, and each of them looked heavily guarded.

Half an hour later, Zhang Qian had flown to the center of the boundless wilderness, where the Sword-Devouring Ancestor built the Heavenly Demon Palace.

There I saw a ten-thousand-foot-high sacred mountain standing there. This sacred mountain was the headquarters of the Heavenly Demon Palace. The strange thing was that unlike other sects' holy places which had continuous palaces and countless pavilions and towers, there were only countless caves on the sacred mountain of the Heavenly Demon Palace.

At first glance, the entire sacred mountain looks like a honeycomb, with dark holes everywhere. It is impossible to tell how many there are. It looks like the entire sacred mountain has been hollowed out.

These caves appear densely, and there are no palaces or buildings on the surface of the sacred mountain.

"As expected of a rat spirit, it actually dug so many holes. Could it be that the entire Heavenly Demon Palace is inside the sacred mountain?"

Zhang Qian looked at the densely packed caves and thought of the Sword Devourer's roots. He sighed that this was really the Sword Devourer's style, he liked to live in caves. It seemed that the huge cities that appeared in the boundless wilderness were definitely not the work of the Sword Devourer, but the work of the ancient royal army of the Sky Fox Goddess. Except for the Sword Devourer, probably no one wanted to live in a cave.

Hidden in the depths of the void, Zhang Qian slowly approached the sacred mountain of the Heavenly Demon Palace in front of him.

The strange thing is that until he landed on the sacred mountain, he did not encounter any protective formations, nor any restrictions. Compared with those huge cities with numerous formations and restrictions, the Tianyao Palace was simply a place wide open on all sides with no protection at all.

This made it easier for Zhang Qian to act. He came here mainly to find the trace of the Sword-Devouring Ancestor and didn't want to make any big noise.

Looking at the countless caves around him, he randomly picked one and walked in.

The cave was pitch black, but it could not stop Zhang Qian's gaze. The path inside the cave twisted and turned, slowly extending downwards, as if leading to deep underground.

After walking left and right for a few quarters of an hour, Zhang Qian finally saw a ray of light in front of him. The light was very dim. After walking forward for another quarter of an hour, Zhang Qian suddenly saw a huge underground space appear in front of him.

This underground space is extremely vast, with a radius of about a thousand miles. The underground of the sacred mountain where the Heavenly Demon Palace is located has been hollowed out.

Looking around, the entire underground space was filled with extremely magnificent palaces, inlaid with countless gems. The gems emitted a warm light, illuminating the entire underground space. Monsters were walking among these palaces, and there were also many soldiers and generals from the ancient royal family patrolling in groups, with strict vigilance.

However, Zhang Qian could see that these precautions were just a pretense. Most of the demons looked panic-stricken. The Sword-Eating Ancestor was wiped out without a trace by Tian Jianzi's brilliant sword. All the demons thought that the Sword-Eating Ancestor was dead. Although these demons were unruly, they were still very convinced of the Sword-Eating Ancestor. He was also the first existence to rule the boundless wilderness. In the hearts of these demons, the Sword-Eating Ancestor was already the most powerful demon in the world. His sudden death made these demons feel as if their faith had collapsed.

However, the patrolling ancient royal soldiers did not react much. Zhang Qian's invisibility technique was not something that these demons could see through. He turned around in this huge underground space and saw a huge square in the center. In the center of the square stood a huge statue, which looked like the Sword-Eating Ancestor. Countless demons gathered under the statue, and most of them knelt on the ground, kowtowing to the statue of the Sword-Eating Ancestor as if praying.

Zhang Qian squinted his eyes and saw that many monsters had red eyes. He didn't know whether it was real or acting, but they looked extremely sad.

"Huh? That's..."

At this moment, Zhang Qian saw an inconspicuous demon lying on the ground, crying loudly. His crying was so heartbreaking that the sound was so loud that it could be heard throughout the entire square.

The powerful demons around immediately went to comfort him, but unexpectedly, the inconspicuous demon cried even harder. Then a demon who looked quite old took him out of the square, saying something as he walked.

The more Zhang Qian looked at it, the more he felt something was wrong. This inconspicuous demon was a little weird. The demonic aura on the other party was looming, and it seemed that his cultivation was not high. However, he always felt that the aura of this demon was extremely terrifying, as if he had hidden his cultivation.

hum!
He secretly activated the Destroying Void Seal, looked again, and his eyes suddenly widened!
(End of this chapter)