Lin Feng was lost in thought and unknowingly arrived at the squad camp where the four electric cars were stationed.

Ding Yi, Chen Shanshan, and others from the team came out to greet Lisa.

During the last journey to the Wild Rift, Lisa had been of great help to the squad, teaching everyone how to dissect Rock-Horned Horse corpses and the knack for capturing them. Before leaving, she even gave away two horse halters for free.

Ding Yi took the pressure cooker from Lisa's hand, pulled her under the tent for a chat, and poured her a large glass of from the stored ice-cold Sea Buckthorn Fruit Wine from the car.

Meanwhile, Lin Feng returned to the transport vehicle where the jerky was stored, opened the freezer, and checked the seven Pure Source Material Evolution Agents.

Now, they were Lin Feng's biggest secret besides his system and equipment.

They were the most valuable and also the most lethal.

After confirming that all seven were intact, Lin Feng went to the miscellaneous goods section at the end of the carriage, looking for the Level 9 Purification Extraction Filter thrown there.

After some searching, he first saw Su Yueyue sleeping soundly inside. Ding Yi had specially found her a blanket, and with her holding the Divine Dog, she wasn't too cold.

The transport vehicle always had the air conditioning on to ensure the jerky stayed fresh, keeping the temperature around twenty degrees. Staying inside long-term was quite cold.

Especially since Su Yueyue had just been strengthened to an early stage, her Physique suffering from the Scorching Sun Curse was gradually declining...

Without properly covering with a blanket, it was easy to catch a fever and get sick.

As Lin Feng approached, the Divine Dog woke up first, wagging its tail and about to stand.

But Lin Feng pressed it down again, making it continue lying down.

After stroking the dog's head twice to soothe it, the Divine Dog was no longer so excited and lay on its side, continuing to sleep.

Cub felines and canines can sleep for an average of twenty hours a day. Apart from eating, drinking, and excretion, they spend most of their time sleeping to digest food, grow muscles, and increase body size.

After not disturbing their rest, Lin Feng continued to search for the Purification Extraction Filter.

Soon, he found this cylindrical rod-like object.

"Purification Extraction Filter Level 9, White Quality"

"Basic Attributes: Maximum aperture 100 nanometers, Tier One Gene impurity filtering level: 100%; Usable times 1; Upgraded to potential upper limit, can increase upgrade potential through Branding"

"Evaluation: Can perfectly filter Alien Gene impurities from the Tier One Life Source Material to obtain Pure Source Material, achieving Purity Evolution."

Lin Feng immediately chose to apply the Brand, then consumed five points of Life Value to upgrade.

After walking out of the transport vehicle with the item, Lisa, who had exchanged some pleasantries, also returned to the mountain cave camp.

Lin Feng then took the filter back to the combat vehicle compartment to rest.

At this moment, after experiencing so many battles, along with contemplation and analysis, he was somewhat fatigued.

Glancing at his own attribute data panel, there wasn't much change in Life Value and Physique, but his Spirit Attribute had fallen from an upper limit of 130 to 121, almost breaking the lower limit.

The reflection in reality was brain fatigue, making him groggy and particularly listless.

After instructing others to take turns on guard, Lin Feng lay down on the reclined seat in the rear and fell into a deep sleep.

He slept straight through until past six in the evening.

At this time, Ding Yi was making dinner.

Because Lin Feng had an upcoming operation, and the specific personnel arrangement only included Chen Shanshan accompanying him to the negative first floor to assist the Salvation Army in clearing out Mutants.

So only meals for the two needed to be prepared.

A portion of two kilograms of Level 15 Evolutionary Meat.

Lin Feng woke up drowsily, feeling much more comfortable.

The Spirit Attribute had recovered.

During a break in eating, Lin Feng suddenly recalled something and immediately asked Ding Yi about how the Salvation Army's flamethrower liquefied hydrogen.

Could it be related to Bai Ye's Power of Space?

Not only could she create space, but also compress it?

If so, that would explain how the stainless steel thermos on her belt turned into a bomb.

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