Moreover, Zhang Yanhang had just doubled his defensive power, and this neck potential activation device isn't some divine weapon, so it might not be able to penetrate his surface defense layer. Therefore, a gentler method should be used to apply it.

If it were in the past, he would definitely have chosen to use alchemy to directly make a hole in the back of his neck and then place the neck potential activation device inside.

But now, he's more inclined to use the Transformation Technique to make a hole in his back neck, as the Transformation Technique is ultimately more professional in this regard, and indeed much more convenient than alchemy, which is more of a side job.

Thus, accompanied by a surge of blood and flesh, Zhang Yanhang quickly used the Transformation Technique to make a hole in the shape of the neck potential activation device in his back neck, which should just fit the device.

However, Zhang Yanhang quickly noticed a problem: this neck potential activation device was designed based on the stature of something like the T-103 model Super Tyrant or the T-0400TP model Death God Tyrant.

And these entities are only about five to six meters tall, while he is now nearly eleven meters tall, almost a twofold difference, so the length of the metal probe seems a bit inadequate.

Fortunately, the equipment in the Ashen World has the function of automatic adjustment according to the body size. So before Zhang Yanhang had time to feel troubled, the neck potential activation device had already automatically resized and connected to the cervical spine, then the magnetic device sensed and activated, firmly attaching to it.

After successfully equipping this neck potential activation device +5, Zhang Yanhang replicated the process and sequentially equipped the other three neck surfaces with neck potential activation device +4.

"Why do I feel more and more like a character from 'Attack on Titan'? Although it can increase strength, it also, to some extent, makes the back neck a weakness. But fortunately, it's not a big problem."

After successfully equipping, Zhang Yanhang immediately switched these four pieces of equipment to a hidden state. The four neck potential activation devices instantly disappeared, leaving only a perfectly sealed blood groove with visible white cervical vertebrae and nerve structures at the bottom.

But soon, accompanied by a surge of blood and flesh, the disconnected muscle fibers reconnected, the entire blood groove seamlessly closed again, and the outer skin became smooth and new, without any visible anomalies.

Feeling the smooth back neck, Zhang Yanhang smiled. Now, the so-called 'weakness' instantly vanished, freeing him from the worry of being suddenly beheaded by some human dwarf.

"One neck potential activation device +5 can provide me with a 53% strength effect bonus.

While one neck potential activation device +4 can provide a 44% strength effect bonus. I just equipped three neck potential activation devices +4 in total, so that's a total of a 132% strength effect bonus, and with the neck potential activation device +5 it's a total of 185% strength effect bonus.

No wonder it has directly merged to an extreme state; the bonus to strength effect is substantial enough."

Zhang Yanhang remembered that his XX-level talent Longbo's power only provided a total of a 265% strength effect bonus, and the combined effect of these four neck potential activation devices is just an 80% difference.

It can only be said that talent, after all, is singular, while equipment can be as many as four. If he could simultaneously acquire four identical talents, it would surely already completely crush any equipment. Given the strength of talents, he could roam freely without any equipment, relying solely on talent.

But unfortunately, talents cannot be acquired repeatedly, and there is a limit to their number.

Having resolved the issue with the neck potential activation device, Zhang Yanhang immediately began to test his strength by spewing out a large heap of steel cubes from his Stomach Space.

Although theoretically, he should be using the more convenient Crimson Iron Ore for testing in the Ashen World.

But unfortunately, due to limited storage space, and the absence of the Heaven and Earth Devourer Skill earlier, Zhang Yanhang mostly used items directly during his time in the Crimson Iron Ant Nest Tarano and did not store too much in his Waist Bag, so the Crimson Iron Ore in the Waist Bag wasn't sufficient.

Of course, even if he did store a lot, it wouldn't be sufficient. After all, even filling a thousand cubic meters with Crimson Iron Ore would only be twenty thousand tons, a marginally adequate amount for his current needs.

Therefore, Zhang Yanhang eventually chose to use steel cubes from the Main World for his strength test. He had previously smelted tens of thousands of tons and stored them in his Stomach Space, so they should suffice for the short term.

Indeed, it's worth mentioning that initially, Zhang Yanhang was unable to bring items from the Main World to the Ashen World, but after acquiring the Heaven and Earth Devourer Skill, he discovered that all items in the Stomach Space could be brought into the Ashen World and freely retrieved without disappearing.

This aspect is really significant, as Zhang Yanhang always wanted to play on his phone in the Ashen World.

But unfortunately, playing on the phone was not an option this time, because usually small items like phones are directly stored in the Waist Bag, and items in the Waist Bag from the Main World would disappear when entering the Ashen World and only reappear upon returning to the Main World.

"Wait, perhaps it's possible to play on the phone. Since items from the Main World can be stored in the Stomach Space, if I put the Waist Bag into the Stomach Space and then open the Waist Bag from there, can I retrieve the phone?"

Thinking of this, Zhang Yanhang quickly tried it out and immediately realized it didn't work, as he couldn't open the Waist Bag in the Stomach Space or retrieve anything, let alone items from the Main World.

Zhang Yanhang was somewhat prepared for this, given that the Stomach Space has always been in an uncontrollable state. He could only change the positions of items inside or classify them, nothing else.

But this is also quite normal, since the Stomach Space isn't exactly a Palm Buddha Country or anything; its primary functions are storage and absorption, essentially a super-advanced version of a stomach. As a stomach, it's naturally not adept at fine manipulations.

And the reason the Stomach Space can bring items from the Main World into the Ashen World, Zhang Yanhang believes, may be due to this characteristic as the Stomach Space seems likely to be regarded as a part of his body by the Ashen World.

Although the Ashen World doesn't allow bringing items from the Main World, clearly things like air in the lungs or semi-digested matter in the stomach don't disappear upon entering Ashen World, as they are considered part of the body.

So, Zhang Yanhang thinks the Stomach Space exploited this loophole, categorizing its stored items as undigested, allowing them to be brought in.

In reality, most of the items inside (more than 99%) are indeed substances awaiting absorption.

"If it's possible to bring items from the Main World into the Ashen World via the Stomach Space, then reversing the process to bring items from the Ashen World into the Main World should also be very feasible."

Zhang Yanhang isn't particularly concerned about other items; he's mainly focused on ensuring that the monsters' corpses consumed this time aren't wasted, especially since they add up to nearly one hundred thousand corpses, enough to sustain his absorption for at least a week, which is really important.

After taking out the steel cube he personally smelted from the stomach space, Zhang Yanhang quickly began testing his Strength.

Since the last time he tested his Strength, his single-hand strength was 12,334 tons. Thus, this time, Zhang Yanhang initially placed a 12,500-ton steel cube in his hand, but he clearly felt a lot of leeway, so he quickly added another 500 tons, yet still felt plenty of leeway.

Therefore, this time, he directly added another 1,000 tons, making the total weight of the steel cube on his right hand reach 14,000 tons. However, he still felt considerable leeway, so he continuously added a few hundred more tons of the steel cube until he finally felt he reached his limit.

In the end, Zhang Yanhang's test results showed his Strength had increased from the original 12,334 tons to 14,651 tons, an increase of 2,317 tons compared to before.

"The increase in Strength brought by the 185% Strength Effect Bonus is indeed significant. If I apply some Spiritual Qi, my single-hand Strength would reach 29,302 tons, nearly 30,000 tons, and if calculating the double-handed Strength, it already reached 73,255 tons."

Zhang Yanhang felt it wouldn't be long before he could lift a 100,000-ton ocean liner with just the blessing of Spiritual Qi.

"If calculated in pounds, my Strength now equates to 147 million pounds. If the Main World had the same low spatial strength as the Mystical World, I would have already shattered the void. Unfortunately, the Main World's spatial strength is relatively stable."

Based on Qin Island City's population of twenty million, if each person consumes one jin of rice per day, Zhang Yanhang could already supply enough rice for the entire Qin Island City for a week.

Even for the Empire's entire population of two billion, he could already supply one fourteenth of the population, showing noticeable progress compared to before.

"I suppose this will make punching fights even more exhilarating."

Well, Zhang Yanhang was talking about serious punching.

After finishing the strength test, and after tallying everything he got from the treasure box, Zhang Yanhang quickly checked his Soul points balance.

[Soul points: 29,440,607 (+15,318,000)]

"Originally, my Soul points balance was only 14,120,000, but after opening these 768 drop treasure boxes, I gained a total of 15,318,000 Soul points, successfully bringing my balance to 29,440,607."

Zhang Yanhang only needed 19,660,000 Soul points to upgrade and advance the Death Wave Skill from Original LV.MAX to Origin LV.6, so he should have nearly 10 million Soul points left to enhance the Cultivation Method Level of the Limitless Universe Skill.

Although Zhang Yanhang could save these remaining Soul points to enhance other Skills, he felt that with his current hunting efficiency, he certainly wouldn't lack Soul points. Thus, there was no need to save them; he should enhance his Skills directly since they need to be upgraded sooner or later.

Though he's still a bit far from breaking records right now, Zhang Yanhang has a hunch that since the Umbrella Biochemical Test Field yields such a high Soul point gain efficiency, his Soul points balance is likely to reach an unprecedented nine-digit level.

Previously, the highest his Soul points balance reached was when he managed to clear the entire Christmas Permanent Teleportation Channel, gaining over 70 million Soul points.

That amount of Soul points might have seemed considerable before, but for Zhang Yanhang, who can now easily gain 30 million Soul points, it shouldn't be an unbreakable record.

However, the premise of breaking the record is to never use the Soul points, which clearly wouldn't work for Zhang Yanhang right now, as he urgently needs to upgrade the Death Wave Skill to deal with the Fourth Tier Monster in the Umbrella Biochemical Test Field.

"Since the Soul points are sufficient now, let's quickly enhance the Death Wave Skill Level; I can't wait any longer. Choose! Skill Level Enhancement!"

Zhang Yanhang immediately took the initiative to trigger the relevant option, and at the same time, Time Pause descended.

[Enhance Skill Level?]

[Option One: Upgrade 'Gun Mastery LV.MAX' to 'Gun Mastery·Original LV.5' (Consumes 1 point of Ash Source, 1 point of Legendary Essence, 6,553,600 Soul points.)]

[Option Two: Upgrade 'Fighting Master LV.MAX' to 'Fighting Master·Original LV.5' (Consumes 1 point of Ash Source, 1 point of Legendary Essence, 6,553,600 Soul points.)]

...

[Option Five: Upgrade 'Limitless Universe Skill[Fourth Tier]LV.7' to 'Limitless Universe Skill[4th Tier]LV.8' (Consumes 6,300,000 Soul points.)]

...

[Option Seven: Upgrade 'Death Wave·Original LV.MAX' to 'Death Wave·Origin LV.5' (Consumes 1 point of Ash Source, 1 point of Legendary Essence, 6,553,600 Soul points.)]

...

[Option Nine: Upgrade 'Indestructible Golden Body·Original LV.MAX' to 'Indestructible Golden Body·Origin LV.5' (Consumes 1 point of Ash Source, 1 point of Legendary Essence, 6,553,600 Soul points.)]

...

[Option Thirteen: Upgrade 'No Taboos LV.MAX' to '???' (Cannot be enhanced)]

"The Soul points needed for upgrading the Limitless Universe Skill indeed increased again."

Luckily, Zhang Yanhang didn't expect to upgrade two levels directly. Anyway, it's just an extra, and being able to upgrade one level is already quite good.

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