Cosmic Crystal?!

Selling goods at the Treasure Artifact Market, Zhang Dong had no safety concerns—the entire market was shrouded by a formation, and anyone who dared to harbor malicious intent would face the descent of boundless might, slain on the spot.

Even an ordinary Chaos Realm cultivator who came would likely be reduced to ashes in an instant.

Taking out a full kilogram of Fermo Venom, Zhang Dong said softly, "This substance is called Fermo Venom; a single drop can kill a deity."

The Fermo Venom, infamous throughout the Primordial Universe, sat in his hand like an ordinary clump of purple water.

For most deities, just 0.0001 grams would be enough to kill them; even the slightest touch would cause their divine heart to collapse.

The burly man glanced over casually, instantly analyzing the composition, lethality, and usage of the Fermo Venom.

He could even modify the Fermo Venom to make it less troublesome.

In the Primordial Universe, using Fermo Venom required contact with an immortal divine body to take effect, and it also needed a carrier—smeared on a weapon to cut into the opponent's divine form.

"Hmm, this venom is quite ordinary, but I've never seen its ingredients before—that's somewhat interesting." The burly man mused inwardly for a moment, then set a price for the Fermo Venom.

He couldn't be bothered with venom that merely killed gods; he'd just offer a random price and take it.

However, the ingredients that made up the Fermo Venom were unique to the Primordial Universe of the Origin Continent Source World, absent from the Boundary Heart Continent.

Each Source World, due to differing rules, produced different materials and the like.

"One thousand Xiafeng Coins, no haggling," the burly man said. "If you want to sell in the future, this is the price too. I'll take as much of this venom as you have."

The universal currency for transactions across the Boundary Heart Continent was the Cosmic Crystal.

But Zhang Dong and other World Gods, lower deities, or even higher True Deities—many didn't own a single Cosmic Crystal.

The complete Nanyun Saint Twelve Forms cost only one hundred thousand Cosmic Crystals.

That was a technique created by the overlord-level existence, Nanyun Kingdom Lord, and learning it cost just one hundred thousand Cosmic Crystals.

Thus, various kingdoms also had lower-tier currencies for use by deities and World Gods; the Xiafeng Coin was what the Xiafeng Ancient Kingdom used.

Hearing this price, Zhang Dong was ecstatic inside—one thousand Xiafeng Coins! It already far exceeded the original value by too much.

It seemed the unfamiliar composition of the Fermo Venom was what piqued the burly man's interest.

One kilogram of Fermo Venom was worth three hundred billion Hunyuan Units.

All the weapons that sum could buy were utterly useless to Zhang Dong—to be precise, once he stepped into Venerable-level combat power, Hunyuan Units lost all meaning.

But one thousand Xiafeng Coins could buy a full set of World God artifacts, or even a slightly inferior True Deity artifact, with a chance.

More importantly, the burly man said he'd take as much as he had—Zhang Dong could gather some Hunyuan Units, mass-produce within his clan, and sell all kinds of venom.

"The venom is easy to handle. I also have a weapon here—see if you can sell it," Zhang Dong said, pulling out an E9 Laser Gun.

There were very few things from the Primordial Universe worth selling; items like spaceships or even ordinary flying palaces were useless here.

Only those in the True Deity Heaven and Earth Realm could fly; spaceships and common treasures couldn't lift off at all—pure scrap metal.

As for energy-based lethal weapons, like Fire God Source Crystals, under the rule suppression of the Boundary Heart Continent, their explosion range probably wouldn't even reach a meter.

Using them to replenish energy was like taking a single breath—who would spend money on that?

After thinking it over, Zhang Dong decided to try the E9 Laser Gun; if it didn't sell, no matter—it was cheap anyway.

The burly man took the three-meter-long laser gun, examined it carefully for a while, then said, "This weapon's construction is somewhat ingenious, but its energy storage is very low—only deity-level power. The design is worth something. I won't cheat you—one Cosmic Crystal, but you must swear an oath not to sell it to anyone else."

"?...?!"

Zhang Dong stared at him blankly. Since starting his cultivation, he hadn't worn such an expression in a long time; his face was written with disbelief.

He even wondered if he was hallucinating.

One Cosmic Crystal?!

What an outrageous price.

The E9 Laser Gun was nothing compared to the Fermo Venom—one kilogram of Fermo Venom could buy a sea of E9 Laser Guns—yet the price gap was this absurd.

The value of a Cosmic Crystal far exceeded even the Cosmic Sand from his home Origin Continent.

On the Origin Continent, five hundred billion Cosmic Sand couldn't even buy a Divine King First Realm weapon, while on the Boundary Heart Continent, Cosmic Crystal treasures generally cost between five billion and ten billion Cosmic Crystals.

One Cosmic Sand was equivalent to ten thousand Chaos Crystals, and raising a True Deity subordinate cost only three Chaos Crystals per era.

Whoosh~

A dazzling Cosmic Crystal landed in Zhang Dong's hand, glowing from within as if containing a miniature universe—an energy so vast it was extreme.

The value of this single Cosmic Crystal far surpassed all the True Deities and Universe Masters in the entire Cosmic Sea combined.

If Zhang Dong took it to the Origin Continent to hire True Deities, he could hire over ten thousand at once without issue.

If a slave market existed, he could even buy a True Deity slave to use. Such a massive fortune—a Cosmic Crystal worth more than the entire human race—and he got it by trading an E9 Laser Gun?

Zhang Dong felt like he was dreaming; the Cosmic Crystal in his hand still shone, its radiant light illuminating his face.

"Kid, stop gawking and swear the oath quickly," the burly man said in a low voice. "My name is Qu Yu."

Swearing an oath would bind him with karma. For high-level experts, such karma could be evaded, but it would affect their Dao heart.

But Zhang Dong, merely a World God, if he dared to break the oath, the power of great karma would backlash and kill him.

Even if he later cultivated to True Deity, Qu Yu could easily kill him using that karma.

"I swear that today I sell the E9 Laser Gun to Qu Yu, and even if I come across the same item in the future, I will not sell it to anyone else." Zhang Dong honestly recited the oath.

One Cosmic Crystal for an E9 Laser Gun.

It was like buying a supreme treasure with a single Black Dragon Coin.

Yet he had no idea that the Boundary Heart Continent also contained countless universes, but almost none of them pursued the path of technological advancement.

Under the deliberate guidance and dissemination of the major nations, the countless universes still primarily followed cultivation systems. Even if some technological products existed, they were far from reaching the level of development seen in the Primordial Universe.

Because the Origin Continent itself possessed mechanical streams and various high-tech products, the lower-tier Primordial Universe naturally had a thriving technological industry as well.

Seeing a weapon designed in such a way for the first time, Qu Yu naturally found it valuable.

What did the inherent power matter?

If he could study the E9 Laser Gun and develop a similar type of technological weapon—nothing too strong, just enough to instantly kill a True Deity—and sell enough of them, the harvest would be far more than a single Cosmic Crystal.