It was said that Heaven have some kind of tolerance level. As long as it was within a norm and didn't surpass normal limitation, there won't be problem. However, there were times a talented Alchemist could surpass the standards. For instance, the normal grade of a pill that Heaven could tolerate was 100%, any more than that and it will be considered as abnormal.

And so, some talented Alchemist, or even those who refine pills for countless of years and master the arts of specific pill, could surpass the mark of 100% and enter beyond it. Those pills who surpass 100% puriy are those who bear the so called pill mark.

Those pills who bear a mark are quite miraculous. It was said that medicine was partly poison and it will cause harmful effect of intaked on large amount at the same time.

Also, since cultivators body have a very powerful adaptability and that part poison of pills can't kill them, their body will naturally adapt and will create some kind of resistance to the same kind of pills. Which means that if they consume a pill with less than 100% purity, the cultivators body will create an resistance to pills which will also reduce the effect of pill for the second time.

For example, an cultivator could refine the 80% efficacy of pills with 80% purity for the first time but for the second time that the cultivators consume the same kind of pill with the same purity, he can only refine 70% of the efficacy. It will further decrease when he consume for the next time around.

However, all of this problem will vanish when the pill posses the pill mark. That was because the pill with a mark removed that poison part, which actually the impurities left behind in the pill, and only contains medicinal effect. Since it was purely beneficial, the cultivators body won't create some kind of resistance.

But refining a pill of this level was easier said than done. Not only it needs both talent and experience, it also face a small force akin to Heavenly Tribulation called Heaven's Punishment. Unlike Heavenly Tribulation, Heaven's Punishment was a lot more weaker, after all, the target of elimination of that lightning was just a pill that don't have the capacity to fight back and protect itself. But since it also made of Heavenly Lightning, any creatures won't usually fight the lightning head on due to it's terrifying effect. Furthermore, many Alchemist don't have a powerful martial power, they usually depend on many other means to resist the Heaven's Punishment.

But pills that successfully pass this test usually have a powerful effect than its lower kind and that is because it receive the blessing the Heaven usually gave after test, the Heaven's Aura. This aura was very beneficial to any creature alike.

Since this dungeon called Forgotten Garden was a special medicinal garden of very renown Divine Alchemist, this place have many formation that blocks, counters and absorb specifically Heavenly Lightning. This means that the Heavenly Lightning the creature will face inside will be reduced to very minimum, perhaps more or less 65%.

Perhaps those formations was created specially for this medicinal plants, after all, Plant Race was both weak when it comes to fire and lightning.

This means that this medicinal garden was a haven for making a breakthrough to Tier-5!

Cole thought of who's beast who can make a breakthrough first. Among his tamed beast, only Shelly and Celia are ready to make a breakthrough.

While he was deep in thought, he heards Celia's voice inside his head, "Make big brother Shelly go first. I can't breakthrough right now or I'll die in my Heavenly Tribulation."

Cole immediately felt worried when he heard that. And when he remember her comprehended [Concept], [Heaven's Paratism], he knew that what she said was most likely true. Just that [Taboo] already sounds worrying.

"Then can you make a breakthrough?" He ask worriedly.

A smile traced on Celia's face as she answered telepathically, "Of course I can. In fact, if I wanted to, I can breakthrough while I face the Heavely Tribulation using the Summoning Grimoire's [Protect], however, I don't plan to block or disperse that Heavenly Tribulation, I plan to bath in it." She said with firm conviction.

"What?!" He exclaimed in shock, even using his voice eventhough they were talking telepathically.

Heavenly Tribulation are a very deadly phenomenon where many fail to pass this Heaven's test. But she even plan to bath in it without using any other protection other than her body! Although he knew just how terrifying the defense of Dragon, which is why it was coveted by humans due to that reason, there were still a limit it could do. If she did what she plan, then her survival rate will plummet to lowest level!

But before he could say his dissatisfaction, eventhough it was already shown to his face, Celia immediately follow, "Do you know the reason why Dragon's have a terrgying defense compare to others? That was because they bath in the Heavenly Tribulation and use it to temper their body. I received the complete inheritance about flesh tempering of Dragons using the Heavenly Tribulation. Don't worry master, with this, not only it will help me reduce the damage produce by tribulation, it will also strengthen my body to whole new level."

"Still!" If Celia will face annihilation during Heavenly Tribulation, he'll choose that she remain with her current level! But he knew that everyone strive to be powerful... And this was mostly more true with Dragons who pride themselves with strength!

"That is why I wanted brother Shelly to go first before me and make Blue breakthrough to Tier-5 himself." She patiently said.

When Cole see that Celia have already some kind of plan in her head, his worry started to subside. "What about Blue?"

"When facing Heavenly Tribulation, another presence on the area will increase the power of the test. This is why facing Heavenly Tribulation must only be faced by the one that's being tested with no other creature. And the aid cultivator could use was those dead objects like formations, equipments and weapons. However, this rules won't apply to those who comprehend the [Heavenly Lightning Concept]. Perhaps it share the same origin and wavelength, those cultivators and beast alike that comprehend Heavenly Lightning will not be considered foreign when inside the area of Heavenly Tribulation. Not only they can aid the subject of Heavenly Tribulation, they could also use that chance to deepen their comprehension of Heavenly Lightning and increase their cultivation at the same time by absorbing those rich number of Lightning Force and Energy." She pause.

"Not only Blue could absorb the Heavenly Lightning and weaken the force of Tribulation by some degrees, he could also use that chance to increase his comprehension of [Concept]. What more, if he could make a breakthrough and reach Tier-5, my survival will greatly increased with his aid."

This means that Blue will use Shelly's Heavenly Tribulation to absorb Heavenly Lightning and also breakthrough to Tier-5. Since Blue's current level was already at Ninth-Level of Tier-4, he could absorb lightning and reach the peak. Perhaps by the time Shelly finish facing tribulation, Blue might reach the Peak and also make a breakthrough to Tier-5. What more, Blue won't only help Celia but also the others! Specially Pis-Ces and Bell, a Elemental Spirit!

This time, they were travelling towards north. They are looking for a secure place where they will attempt breakthrough to Tier-5.

As for finding the others, Cole didn't have to worry about them for the time being as he requested to Yellow Spring Spirit Lotus to tell the other sentient herbs to not actively hurt the other intruders. Of course, this was on the premise that those persons don't do something excessive. And since most of the spatial equipment of others won't work, they won't need to actively hunt for herbs and just look for hiding place until they were ejected by the secret space.

He just hope that the others won't get blind by their greed...

He will look for the others after he increased his and his tamed beast strength. And also harvest the rare herbs inside. Afterall, no matter how reassuring the Yellow Spring Spirit Lotus words are, it was still an aid and not his own strength. Perhaps it could help him for most time but won't all the time. One's own strength is what matter in the end.

Their destination in north was special part of this secret garden. According to her description, she could deduce that that place was a dessert. It's not that she don't want for them to breakthrough to their location, but she can't deny the fact that the aftermath of Heavenly Tribulation was very disastrous. And since they were not a plant and don't have a great restriction to their movement, it will be best if they don't bring destruction to her territory.

Which is why she redirected them to north side. That place was a barren land and a territory of only one special herbs. Since that special medicinal herb lives in the middle, it should be no problem for them to make a breakthrough in the periphery of that place.

This was why they were currently travelling towards north. Of course, it goes without saying that he transfer all the medicinal herbs he encounter on the way into the [Inner World]. Although the current [Inner World] are a little inferior when it comes to richness of spiritual energy currently, he believed that it won't be long before he surpass this medicinal garden.

Shelly's ability to fly was not restricted by this place, this was probably because the restriction was not powerful enough to restrict his ability, after all, Shelly's species' Blue Land Turtle was known to live at the infinite universe.

It didn't take long before the sight of golden sand appear. Moments later, they land at the golden sand. When he look at the dungeon map in front of him, it said that this place was called Golden Dessert. It was a place devoid of any moisture, so other plant don't have the capability to survive here, of course, except the one who rule this territory.

Since that so called sentient herb was an hermit and timid type, according to what Yellow Spring Spirit Lotus said, it won't usually show itself unless there's something excessive happen in its territory. And since this place don't have anything that has value except for that sentient herb, it practically don't show itself and just focus on hiding. Probably, after the tribulation phenomenon, that sentient herb will show itself to them, after all, what they were about to do in its territory was over excessive...

Cole already told Shelly that he'll make a breakthrough here. As for Blue, he told him that he must use his skill [Lightning Absorb] when the tribulation happen.

However, since Blue have already develop his intelligence, he already knew the dangers and horror of Heavenly Tribulation. Only when when Cole told him what Celia said that Blue agree to this arrangement. Anyway, if what Celia said didn't happen and the Heavenly Tribulation got stronger, he could just unsummon him and send Blue back to [Inner World].

After giving both Blue and Shelly some rare herbs that could recover injuries, Celia and him started to create distance.

After they reached a thousand kilometers distance, black clouds started to gather on top of Shelly's location. The Heavenly Tribulation was about to start. It didn't take long before the black clouds have covered five hundreds kilometer and still increasing. Only when it reached a thousand kilometers that the black cloud stop increasing. Cole and Celia don't have a choice but to distance themselves much further.

The Heavenly Tribulation for Tier-5 was vastly different from Tier-3 of spirit crystallization, specifically the force and power behind it.

The black clouds in the sky have an occasional flash of lightning happen. It was apparent that the tribulation was already gathering energy.

Meanwhile, both Shelly and Blue to position themselves; Shelly was on the ground and hiding from his shell and it was covered by rich amount of Earth-Energy and Blue was on top of it. Shelly was using [Shell Withdraw] skill. Not only the skill increase the defense of its shell by few folds, it also recover his injury gradually. And since his shell was covered by huge amount of soil, it can also reduce the impact of lightning.

As for Blue, he was already covered with lightning. His fur was already glowing with how high the energy that covered his body. He was also looking at the black clouds with longing. It seems that he won't need to worry about Blue anymore.

Suddenly, there's an invisible energy that covers Shelly. If Cole don't have a great affinity with Space and soul contract to the turtle, he won't be able to know its existence. Not having an idea about it, he summoned Shelly's status panel and look for it;

Species Name :: Blue Land Turtle♂️ Beast Name :: Shelly Level :: Ninth-Level Tier-4 Loyalty :: 100% Potential :: Arcane Affinity :: Space/Earth Race :: Beast/Shelled Innate :: Space Mastery Beast Skill :: Void Bullet, Earth Tremor, Shell Withdraw, Size Shifting, Levitate, Void Stealth, Void Mend, Gravity Control Concept :: Atmospheric Barrier, Continental Shell

Concept :: Atmospheric Barrier A comprehended concept base on special force field that covers a planet. •(0.99%) Increase all space-base skills by 99.0%. •(Atmosphere) Always cover the whole body with barrier made of Space-Energy which can isolate everything from the outside and contain securely what's inside, specially air. It will automatically absorb the energy outside to maintain. •(Gravity Pull) Everything inside the created atmosphere barrier will be pull into the host as the center. •(Stable) Makes the atmospheric barrier stable. Shrinking and expanding of Blue Land Turtle won't affect the world on top of its shell.

Concept :: Continental Shell A concept that creates a Earth continent on top of shell. •(0.99%) Increase all earth-base skills by 99.0%. •(Earth's First Layer, Crust) The top of Blue Land Turtle's will covered with very thick soil that could be used as normal ground. •(Underground Veins) All of the excess Energy will be emitted to Blue Land Turtle shell that could nourish the ground, which could create natural resources underground. [Available : Underground Water Spring.] •(Earth Manipulation) Freely manipulate Earth. Manipulating the Earth on top of its shell won't use any Energy.

According to the given description by System, Blue Land Turtle are the beast that lives on infinite universe which is known to have no wind, the thing needed first to survive. Due to their natural gift, many humans, or perhaps any creature alike, ought to tame them and use as transportation means in the infinite universe.

Seeing this two types of [Concept], he could see the reason why. It's no wonder they were called moving city!

While Cole was looking at the information of Shelly, the created vortex on top of Shelly and Blue started to gather energy and ready to blast lightning!