He hurriedly looked at the data of the handgun:
[LV.4: 61/40 (Upgradeable)]
Sure enough, the experience was already full.
No, it was actually over the limit.
Yang Yuan was delighted and quickly chose to upgrade.
A white light appeared, visible only to him, lasting about three seconds, and the handgun upgrade was completed.
However, this time the upgrade didn't change much; it just became more refined, but the shape and size remained the same.
[LV.5: 21/80 (Handgun King, effective range of two hundred meters, creates an explosion upon hitting the target.)]
From the description, it seemed that the range had doubled, but the power was temporarily unclear.
Yang Yuan observed the surroundings with the external radar of the Power Armor and found no other creatures within a hundred meters. He then raised the handgun to aim at a tree trunk in the distance.
He decided to first figure out the handgun's power to avoid misjudgments when encountering strong enemies in the future.
"Boom!"
A loud bang followed as the tree trunk, as thick as a thigh, exploded into flying wood chips.
He then aimed at the main trunk of the tree.
With another "boom," a bowl-sized hole was blasted on the tree's surface.
But that was all.
"What happened? Is there an enemy?" Zhao Jiayan asked nervously, ready to use her powers to help.
"Testing the gun," Yang Yuan replied.
He walked to the giant tree, observed the hole made by the bullet, and found that while the surface was only bowl-sized, the inside had turned to powder.
As for the handgun's bullet, it had long disintegrated, not even leaving powder, turning its terrifying kinetic energy into disappearance.
He reached in, easily pulling out a large amount of wood chips until his arm was fully extended before the hole end turned into solid wood.
"Half-meter depth?"
Yang Yuan was a bit surprised and happy: "As I guessed, the handgun's bullet explosion power is at most comparable to a hand grenade, maybe even less, but the true killing power of firearms lies in penetration, and surface wounds don't represent true power."
The trunk of such a giant tree was very hard, being able to make such a big hole meant regular beasts surely couldn't withstand it.
Zhao Jiayan and Jiang Yiyi looked at the hollow tree with surprise.
Zhao Jiayan thought that with such power, a few more shots could create a temporary living space in the tree.
"Let's keep moving, hold on," Yang Yuan said while glancing at the Power Armor's experience, finding there was just over an hour left to fill.
"Mm-hmm."
Zhao Jiayan and Jiang Yiyi had no objections, even eight-year-old Jiang Yiyi knew that stopping now would just make fatigue worse.
This was the experience she had accumulated over the past half year.
Zhao Jiayan noticed Yang Yuan's face within his opened mask was covered in sweat, and asked worriedly, "Need some water? You're sweating so much, you might dehydrate..."
"No need, best not to open the water bag now, or the water inside will evaporate," Yang Yuan replied.
Although he was very thirsty, it hadn't yet reached a critical point.
"It shouldn't evaporate, I got a cooler with the water I bought earlier, this cooler can really reduce the water temperature," Zhao Jiayan said.
"Cooler?"
Yang Yuan's eyes lit up: "Where is it? Let me see."
"It's in the water bag," Zhao Jiayan hurriedly opened the water bag and took out the cooler soaking inside.
'Hmm? Could this be the one I made last night?'
Yang Yuan took the cooler and found its temperature to be only twenty-five or six degrees, much cooler than the outside forty-plus degrees.
Clearly, this thing actually could cool the water.
But what really surprised him was, the cooler had a lot of experience data on it.
'I made a hundred coolers last night, could some not have been placed in the underground river? Or were they taken out and one inadvertently ended up back in my hands?'
[Cooler LV.1: 787/10 (Upgradeable)]
'Seven hundred eighty-seven points of experience!'
Yang Yuan was a bit excited; it was the first time he saw an item he'd assembled have so much experience.
'I wonder how many levels this can be upgraded to?'
He eagerly chose to upgrade, curious to see if a higher level could curb the increasingly high temperatures.
Quickly, the first upgrade was successful.
[Cooler LV.2: 777/20 (Contains water temperature regulation arrays, lowering the water temperature within a ten-centimeter radius to as low as twenty-five degrees, with effectiveness improving the closer to the cooler; subject to environmental influences; Upgradeable)]
The new description was more detailed than before.
'Water temperature regulation arrays?'
The thought crossed Yang Yuan's mind as he continued to choose upgrade.
[Cooler LV.3: 757/40 (Contains water temperature regulation arrays, lower water temperature within a twenty-centimeter radius to as low as twenty-five degrees... Upgradeable)]
The range increased, but the minimum water temperature remained the same.
"Continue!"
[Cooler LV.4: 717/80 (Contains water temperature regulation arrays, lower water temperature within a forty-centimeter radius to as low as twenty degrees... Upgradeable)]
Great, the minimum temperature decreased.
[Cooler LV.5: 637/160 (... eighty centimeters... twenty degrees... Upgradeable)]
...
[Cooler LV.6: 477/320 (... one point six meters... twenty degrees... Upgradeable)]
...
[Cooler LV.7: 157/640 (Contains temperature regulation arrays, works by being placed in water, can lower the temperature within a three-point-two-meter radius, minimum to fifteen degrees, with better cooling effect the closer to the cooler; subject to environmental influences; Not upgradeable)]
The entire process took about ten seconds.
Once the last upgrade finished, everyone, including Yang Yuan, Zhao Jiayan, and Jiang Yiyi, suddenly felt the temperature rapidly drop.
The air temperature had originally been over forty degrees, but in an instant, it dropped to around fifteen to twenty degrees.
The refreshing feeling almost made the three of them moan in pleasure.
"Wow wow, it's so cool!" Jiang Yiyi exclaimed excitedly.
"Why... how did it suddenly become so cool? Is there danger?" Zhao Jiayan, more cautious, pointed her handgun around.
But she quickly noticed that the half of her body closer to Yang Yuan was cooler, and she saw condensation forming on Yang Yuan's palm.
"This is..." She quickly looked at the cooler in Yang Yuan's hand.
"I fixed the cooler, and now it's even better," Yang Yuan explained with a smile, feeling a bit of excitement himself.
With this treasure, they wouldn't need to worry about skyrocketing temperatures for the time being.
This cooler, though still fist-sized with a magical appearance, had become much more refined, bearing visible mysterious patterns on its surface.
Those patterns were perhaps the so-called temperature regulation arrays.
The initial description mentioned water temperature regulation arrays.
But after reaching level seven, the description changed from water temperature regulation arrays to temperature regulation arrays.
Only two words changed, but the significance was hugely different.
"Fixed it a bit..."
Zhao Jiayan was speechless, understanding roughly what had happened.
But she also happily feigned ignorance and said, "There's condensation forming on your hand; can this cooler condense moisture from the air? Can we collect water this way?"