"Return to the ruins." Gu Xu silently recited this word in his heart.

In all the Great Wilderness cultivation texts he had read, the word never appeared.

But the moment he heard it, he felt that it seemed to have a mysterious rhyme, which instantly cleared some clouds in his heart and faintly glimpsed the reality of some worlds.

"Is this what the Upper Realm is saying?" He asked the machine spirit.

"Sort of," replied the Instrument Spirit, "There is Yujing in the Upper Realm and Guiru in the Lower Realm. Yujing is the apex of all things, and the ruins are the destination of all things.

"Whether you climb the "Jade King" or step into the "Return to the Ruins", you can reach the end of the avenue."

"You mean," Gu Xu frowned slightly, "'Returning to Ruins' is not just a place name, it's also a realm of cultivation?"

"As the heir of the emperor, you don't even know this?" The machine spirit looked at him with a look of surprise with wide eyes.

Gu Xu shrugged his shoulders and replied, "In our cultivation system, the highest realm is called the 'Ascending Immortal Dao', as long as you survive the Heavenly Tribulation, you can soar to the upper realm and become an immortal.

"Of course, you should know that it's a scam."

"Hehe, it's indeed a scam," the machine spirit laughed, "That guy 'Taishang Haotian' can't stand up to scrutiny even if he makes up a lie.

"The upper realm and the lower realm are originally two equal worlds, there is no distinction between high and low, how can there be such a thing as ascending?"

"A world of peers?"

"In the cultivation system of the Upper Realm, there are a total of nine realms," the machine spirit touched his chin and introduced to Gu Xu, "Their names are 'Yan Volcano', 'Weak Water River', 'Kunlun Hill', 'Langfeng Peak', 'Xuanpu Garden', 'Tianyong City', 'Qionghua Palace', 'Nine Heavens Realm', and 'Jade Jing'.

"The nine realms of the Nether Realm are called "Ghost Gate Pass", "Weak Water River", "Nai He Bridge", "Wangxiang Terrace", "Meng Po Pavilion", "Xudu Gate", "Yama Palace", "Nine Hells", and "Return to Ruins".

"The names of these realms are different, the true elements are different, but the essence is the same, and the strength can also correspond one-to-one.

"The highest realms like 'Yujing' and 'Guiru' can only be reached by one person in each world. Once cultivated, it is equivalent to becoming the master of the world, and you can make the rules of this world and manipulate the cause and effect of this world as you like."

The realm of "returning to the ruins" does sound much more reasonable than the "Ascending Immortal Dao".

Gu Xu thought to himself silently.

The monks of the upper realm climbed up step by step along the Kunlun Heavenly Ladder, and the monks of the lower realm gradually descended along the path of the Netherworld towards the underworld.

Up to the capital of the Heavenly Emperor, the source of all the universes.

Down to the bottomless valley, where all the waters meet.

Unconsciously, a flash of inspiration flashed in his mind, and he faintly guessed something: "Did the 'Taishang Haotian' and the 'Ziwei Emperor' part ways and turn against each other in order to cultivate this unique supreme realm?"

"What a cleverness, worthy of my master!" The machine spirit faked a compliment, and then continued, "You should know that the eighth realm is a very special realm because it is divided into nine sub-realms – the upper realm has the 'Nine Heavens' and the lower realm has the 'Nine Hells'.

"Back then, both Taishang Haotian and Emperor Ziwei had cultivated to the ninth heaven of the Nine Heavens Realm, and they were only one step away from stepping into the Jade Kingdom.

"But because only one person can cultivate to the realm of 'Yujing'.

"So they made a pact to find a new world where they could both have a chance to be promoted.

"They traveled through the void and found the Underworld, the wilderness where you are.

"You may have guessed by now that the key to advancing to the realm of Jade Jing lies in the power of incense - after all, water can carry boats and can also capsize boats, and if you want to rule the rules of a world, you need to be approved from the hearts of the creatures of this world.

"At that time, Taishang Haotian suddenly discovered that if he could obtain the power of the incense of two worlds, then after he advanced to the realm of 'Yujing', it would be better than relying on only one world

The power of incense is even stronger.

"So he chose to betray the agreement with the Ziwei Emperor.

"You should already know what happened next."

Gu Xu nodded.

"Then do you know that 'Taishang Haotian' has now advanced to the realm of Yujing?" After a brief pause, he asked again.

"I don't think so," replied after a moment of thought, "Taishang Haotian has always pursued perfection. Before taking the incense of the entire Great Wilderness into his possession, he should not easily try to break through the realm."

Speaking of this, he paused, stared into Gu Xu's eyes and asked, "Do you know what your chances of winning against him are?"

"Where?"

"You must use the incense of the Great Wilderness to reach the realm of 'Returning to Ruins' before the 'Taishang Haotian' ascends the 'Jade Capital'." The machine spirit said slowly, earnestly.

"It took thousands of years for the 'Taishang Haotian' to advance to the 'Jade Jing' realm," Gu Xu frowned and said, "I've only been cultivating for about a year, do you think I will break through the realm faster than him?"

"You're not an ordinary Fourth Realm cultivator," Ji Ling said with a smile, "You have the foundation left to you by the Ziwei Emperor.

"Taishang Haotian spent a huge amount of effort, but he couldn't completely erase the traces of the existence of the Ziwei Emperor, and could only make up a god of "one body and two sides" in order to seize the incense of the "Ziwei Emperor".

"Besides, you are still the "God of Fire" in the eyes of the people of Youzhou.

"Looking at the entire Great Wilderness, no one is more qualified to enter the realm of 'Returning to Ruins' than you."

Gu Xu shook his head slightly.

Not only did he have to prepare to deal with Emperor Tianxing now, but he also had to quickly break through the realm to deal with the "Taishang Haotian".

He just felt a lot of pressure.

"Do you know why I was given the authority of the Vulcan?" He thought for a moment and asked, "Is it because of the 'Huilu' rune I once obtained?"

"You made it yourself, how do I know?" The machine spirit spread his hands, "You ask me, who do I ask?"

By this time, the boat was already very close to the waterfall.

Its small half hangs in the air.

Looking down, there is the steaming water vapor and the dark and dim abyss that cannot be seen at a glance.

Gu Xu took a deep breath.

He did not choose to fall with the boat, but took the astrolabe in his arms and jumped into it.

It stands to reason that as a Fourth Realm cultivator, he has the ability to fly with imperial weapons, and he can control his speed and slowly fall down the waterfall without worrying about falling to pieces.

But strangely, his ability to fly completely failed.

The valley below seemed to have an inexplicable gravitational pull, dragging him down at an accelerated pace.

He tried the "Wind Charm" and the "Astrolabe" for short-distance teleportation, but he couldn't get out of the situation of free fall.

At this time, I saw the machine spirit standing on the "astrolabe" against the whistling wind, muttering the words recorded in the ancient books: "'Return to the ruins', the bottomless valley." The water of the eight and nine wildernesses, the flow of heaven and Han, are all injected, and there is no increase or decrease.

"You must know that the reason why you are falling is not because of gravity, but because of the law, because it is the "effect of all causes", the "place where all things are one", and it is the end that all beings must reach.

"Comprehend the meaning of the Great Dao here, master. This is very important for your future advancement."