"Then, wouldn't this trip... mean certain death." The young man was extremely worried.

"What are you afraid of? We are only responsible for helping that master open the underground palace entrance; we don't have to go in. If indeed someone has to go in, there's that master and the experts from the Heavenly Craftsman's Mansion to back us up."

...

The Heavenly Craftsman's Mansion?

Chen Ku hadn't really heard much about these three words.

But looking towards the inside of the cave mansion, he saw many Mechanical Copper People and puppets inside, and a middle-aged man with a mechanical arm, completely focused on crafting a mechanism.

"Is this the master from the Heavenly Craftsman's Mansion? It sounds similar to the mechanical experts from the 'Mo family' of my past life?"

Chen Ku recalled the Qilin Blood Memory Inheritance, and it seemed that on the map, there were marks of many mechanical figures, vaguely suggesting the presence of a guardian.

His heart stirred, and he remembered this information.

He flapped his wings and flew towards the end of the passageway. Here, Chen Ku finally discovered the way these people dug; it turned out they were quarrying stone, with dozens of people holding diamond drills, quarrying the stones within the soil...

Chen Ku finally understood why Third Uncle said that this underground palace was like hollowing out a mountain. The mountain rocks served as barriers; no wonder Shangguan Yun took so long after capturing the Xu Family to dig through ninety percent of it.

It was truly 'mountain opening.'

The tiny bee that Chen Ku had transformed into flew over the heads of the laborers, arriving at the surrounding stone walls at the end of the path, looking closely. He discovered that these stones were neatly aligned, like giant pyramid blocks, stacked together.

But upon seeing the final part, he became delighted:

"There are gaps, gaps are good!"

Since the stone palace was crafted on the mountain's exterior with external force, there were gaps in the stone blocks' stacking, meaning he could use the Earth Escape technique to burrow inside.

Whoosh~

A laborer was quarrying stone when he suddenly seemed to see something in a flash, as if a stone seam had loosened...

...

Swish! Swish! Swish!

Chen Ku used the Earth Escape Skill, continually seeking gaps among the stone block barriers where Shangguan Yun had ninety percent dug through, constantly slipping in...

The tiny bee-sized body, in giant earth-toned stones, searched for gaps. If it weren't for his strong memory, allowing him to recall routes...

The feeling was truly like a small man entering a giant-crafted enormous labyrinth, not to mention the possibility of getting lost. The mental oppression was terrifying.

...

Huff! Huff!

Not knowing how much time passed, Chen Ku estimated he'd burrowed for over half an hour, suddenly, in front, there was light...

Immediately, his tiny body flew out, plunging into a silver ocean.

[Beside the Diagram Master is an object meeting the Sixth Transformation Map cultivation conditions: Ten thousand pounds of mercury]

[Do you choose to sacrifice?]

...

Once inside this silver ocean, Chen Ku's first sensation was his body instantly activating the Five-colored Peacock's [Uninjured by Gold] and [Immune to Water] abilities.

He then transformed into a Five-colored Peacock, diving towards the ocean's surface.

In no time.

A Five-colored Peacock was seen flapping its wings and flying out above this vast silver ocean.

As it flew out.

Chen Ku finally understood why the Transformation Diagram reminded him of something nearby fulfilling the conditions for the Sixth Transformation Map cultivation. He beheld beneath him an ocean-like expanse of mercury, resembling an enormous lake, blocking a giant stone wall. At the lake's end was a mythical stone pillar door, with a massive entrance behind it, standing ten zhang in height.

"So much mercury... it's almost like the legendary underground palace of Emperor Qin Shi Huang!"

He was awestruck.

The mercury lake, if converted to silver taels, who knows how much silver it would be worth!

Only then did he have the sense to look at the Transformation Map's reminder.

He suddenly discovered, due to the immense mercury here, the Seventh Map's cultivation conditions had also been triggered.

[Beside the Diagram Master is an object meeting the Seventh Transformation Map cultivation conditions: One hundred thousand pounds of mercury]

[Seventh Transformation Map cultivation conditions: One hundred thousand pounds of mercury, One hundred thousand taels of Pure Gold, Ten thousand pounds of Gold Silk Jade, Ten strands of Evil Qi at the Five Realms, One Ultimate Skill to Perfection, One Spirit Jade]

(Note: Completing the Seventh Map will awaken the Diagram Master's second great divine power 'Evil Summoning Banner')

Chen Ku was both surprised and thrilled.

He had learned before that the Transformation Diagram would grant a divine skill every 'three' and 'seven' of its sequences, just like his fetus transformation refining shape.

Now, the details of the Seventh Map were finally revealed.

"Evil Summoning Banner?"

His first thought was of the supreme magical treasure that Wa Emperor used to command legions of demons, but isn't this a magical treasure, not a divine skill?

"Evil Summoning Banner? What does it do? Could it summon demons to serve me as their master?"

With too little information, it was impossible to assess.

He had to focus on the cultivation conditions for the Seventh Transformation Map.

"Pure Gold?"

Chen Ku sucked in a cold breath.

Given his current societal status, he had some understanding of the currency of the upper echelons. As the saying goes, 'Gold is never truly gold, nor is man perfect,' Pure Gold is rarer than gold. Generally, it's not formed naturally but refined postnatally, primarily used by some Taoists when practicing alchemy.

Gold, refined to its purest extreme, becomes a medicinal 'Pure Gold.'

The 'medicine' here refers to 'pill.'

Golden Core alchemy using metals like gold, silver, lead, and mercury.

In the Medicine King Hall, they had similar alchemical methods, but nowhere near enough to use such precious 'medicinal materials' as Pure Gold, mainly because the Medicine King Hall didn't possess any 'pill prescriptions' involving Pure Gold.

"Pure Gold is like Silver Essence, estimating that ten taels of gold are needed to refine one tael of Pure Gold, one hundred thousand taels of Pure Gold... my, oh my..."

Chen Ku felt that he could never earn that much money in Baojiao County in his lifetime.

As for Gold Silk Jade, it was even more expensive.

And Spirit Jade, Chen Ku had never even heard of.

Yet.

Looking at the already satisfied condition of one part of the Sixth and Seventh Maps.

Mercury, ten thousand pounds of mercury, one hundred thousand pounds of mercury...

It turned out that the underground palace's perimeter only redid the 'moat' as a burglary prevention measure.

"The gold and silver precious metals needed by the Transformation Diagram may be unattainable by ordinary means in my lifetime, but... if I could obtain the 'Hero King Treasure' inside this underground palace, everything would be different."

Chen Ku gazed at the silver ocean below, decisively stating:

"Sacrifice! Sacrifice as much as needed!"

Boom!

Boom!

Instantly, along with the Transformation Diagram's 'Void Devouring,' that ocean-like mercury lake instantly lost forty to fifty tons of mercury...

Causing the entire mercury lake's surface height to drop by roughly a foot.

[Diagram Master has met 5/6 of the conditions for Sixth Transformation Map cultivation]

[Diagram Master has met 1/6 of the conditions for Seventh Transformation Map cultivation]

Chen Ku saw that the Sixth Transformation Map was just one condition away from awakening its completion: "a Top Quality Transformation at the Fourth Realm."

At this time.

He cautiously looked toward the underground palace entrance because standing there was a three-zhang-high bronze giant, holding a Floral Axe, stately as a heavenly god.

"That..."

If he hadn't eavesdropped on the conversation between the uncle and nephew geomancers outside the underground palace entrance, Chen Ku might have thought it was just a statue, but now he was quite certain:

"It's a bronze mechanical puppet!"

Considering this underground palace was crafted by at least a Fourteen Realms hero, the strength of the bronze puppet he left behind...

Chen Ku swallowed a mouthful of saliva.

He speculated:

"Seventh Realm? Eighth Realm? Ninth Realm? Or even higher?"

However, having reached here, being trapped at the gate by this puppet would be a joke.

"Let's see if the clone can get through..."

Chen Ku stretched out his palm, blew out a breath, releasing the bee incarnation, sending it ahead to scout. If the bee could pass, so could he.

If the bee couldn't pass, only a bee incarnation would be lost.

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