Inside Tang's Commerce Association, the air was somewhat silent at this moment.

Tang Si's gaze was fixed intently on the five clusters of flames in front of him.

Indeed.

What appeared before him were unmistakably five clusters of earth vein fire!

And sitting quietly not far from him, calmly sipping tea, were naturally the members of the trade group, including Wu Fan, Lin Ziming, and others.

In this batch of goods carried by the trade group, aside from the large amount of Happy Boom Sticks and assembly line clothes prepared by the rabbits, there were also some other scattered trinkets.

For example, electric shavers, hand-cranked flashlights, magnifying glasses, laxatives, Ma Yinglong hemorrhoid ointment, and so on...

Perhaps in the cultivation realm of the Damo Realm, there are many instruments or talismans that can replace these small things.

But in the more low-end civilian sector, these items still have a considerable market.

Simply put, the main target audience for these items are ordinary civilians and cultivators below the second level of Qi Cultivation, and they are traded only in copper coins.

No matter what, copper coins are still money; collecting them and melting them down back home is not a bad deal, especially since copper prices have been quite high these days.

Besides the aforementioned goods, the rabbits also prepared a few special items.

Due to a certain director who wishes to remain anonymous and his unfortunate choices, the trade group brought over three thousand fewer spirit stones than expected this time.

After deducting round-trip tickets and other expenses, there were only around twenty thousand spirit stones left in total, which is equivalent to just over one hundred million Huaxia yuan.

People who have attended large-scale trade expos should know that over a hundred million may seem like a lot of money, but in reality, it goes very quickly; just signing a few intent contracts can easily use up tens of millions.

If it's an industrial expo, it goes even quicker, and it's not guaranteed that even a few production lines can be bought.

According to Wei Qiangsheng, the average cash flow for a regular family during the market period is about six thousand spirit stones.

The main cost of beast materials lies in the losses incurred by cultivators during siege periods, so if a family only sells and doesn't buy, pure profit could be around four thousand spirit stones—considering a marketplace opens every three to four years, this sort of pure profit isn't excessive.

After all, a cultivation clan with over a hundred people needs over a thousand spirit stones each year just to allocate to the younger generation.

Therefore, to buy some good items, the rabbits' twenty thousand spirit stones are honestly not enough.

Even selling all the Happy Boom Sticks wouldn't be enough.

After all, the Happy Boom Sticks and other small items...

They're mainly for market testing and preparing for future inventory clearance, uh, long-term collaboration.

So, to prevent the trade group from falling into the embarrassing situation of only being able to look and not buy after a simple splurge, the rabbits specifically prepared a few backup items as reserves.

These five clusters of earth vein fire are one of them.

Earth vein fire, also known as earth evil fire, is an essential fire source for alchemy in the Damo Realm.

Earth vein fire exists within the earth's core and requires a Foundation Establishment Stage cultivator to expend significant effort to have the opportunity to channel it.

The lowest cultivation level for channeling earth vein fire cannot be below the sixth layer of Foundation Establishment, and the cultivator must possess fire spiritual root aptitude. Channeling a cluster of earth vein fire from the core takes at least one to two years.

Generally speaking.

A city with a legacy of a hundred years and generations of Foundation Establishment cultivators is lucky to have one or two clusters of earth vein fire.

Some Core Formation Stage families with unfortunate circumstances, maintaining a legacy for hundreds of years without a single fire spiritual root Foundation Establishment cultivator, sometimes have no choice but to painfully hire or buy at high prices.

In these families, earth vein fire is regarded as a family heirloom!

Thus, in the Damo Realm, earth vein fire is extremely valuable.

This is also the reason why the main branch of the Wei Mansion, possessing a Tier One Alchemist, holds a higher status than those with only a Tier One Talisman Master.

Even in normal times, the price of a cluster of earth vein fire is at least four thousand spirit stones—meaning a family with Foundation Establishment combat power must skimp on cultivation resources and live frugally for three to four years to gather it.

Moreover, as spiritual energy in the Damo Realm diminishes, the value of earth vein fire almost increases by a few percentage points annually.

It's precisely because of the invaluable nature of earth vein fire.

The rabbits specially prepared a small amount of earth vein fire for Lin Ziming and others to see if there's a suitable opportunity to convert them with suitable merchants.

The emphasis on "suitable" is mainly because these earth vein fires have a slight, extremely subtle, small flaw:

They can only burn continuously for about 200 hours.

As previously mentioned.

Under the study of Liu Xiangqian's team, the rabbits deciphered the secret of the evil energy within the earth vein fire:

It's a type of microorganism that can survive under extreme high temperatures and releases a large amount of condensing particles.

The rabbits named it the Y microbe, and the evil particle it releases is called the Y particle.

However, despite the breakthrough, mass production is not easy.

In later research, Liu Xiangqian's team discovered that although Y microbes can be artificially propagated and expanded in specific environments...

Their "offspring" born from this process have extremely short life cycles and cannot continue to multiply in any environment.

In the original earth vein fire's core, the survival cycle of second-generation Y microbes is only slightly over 400 hours.

While in an artificial flame environment, the lifespan of second-generation Y microbes drastically plummets to less than 200 hours.

It's important to note that these first-generation Y microbes, in suitable conditions, can continue to reproduce for over a hundred years.

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