Cosmic Trading System

One day… two days… three days…

One month… two months… three months…

Time slowly slipped away, and during this period, Lin Yun used many heavenly treasures. Although the Bloodthirsty Sword could help refine them, Lin Yun did not let the Bloodthirsty Sword help with all of them.

On one hand, if the Bloodthirsty Sword helped with the refinement, it would incidentally absorb ten to twenty percent of the energy, and Lin Yun did not want to waste this energy for nothing. Originally, he lacked time to challenge higher levels of the Heavenly Principle Tower, but now that he was trapped within the tower and unable to leave, time was no longer such a scarce commodity.

The quantity of heavenly treasures was limited, and he was not certain how many more he would need to use before breaking through to the Super Warrior realm. Once he exhausted the heavenly treasures he had, going out to hunt for new ones would put his life at risk. At this time, conserving the efficiency of using heavenly treasures was most important.

On the other hand, the energy he refined bit by bit on his own allowed for better sensing and familiarity.

Half a year later, Lin Yun had used up half of his heavenly treasures. The remaining ones were mostly unsuitable for continued use or required the aid of other heavenly treasures.

It was like when Lin Yun used the Super Golden Liquid previously—he couldn't use too much of it, or else the hidden damage in his body would become increasingly severe and had to be neutralized with water-attributed heavenly treasures or slowly repaired over a great amount of time.

Lin Yun began to search for new heavenly treasures. According to his earlier observations, the heavenly treasures on the seventy-third floor space of the Heavenly Principle Tower were quite complete in terms of various attributes.

In the blink of an eye, a year passed.

"Boom! Boom——"

That day, in the sky of the seventy-third floor space of the Heavenly Principle Tower, countless explosions rang out as a figure rapidly weaved through them.

Several minutes later.

Bloodstained and ragged, Lin Yun arrived in a cave, grinned, and said, "I've found three heavenly treasures with water, wood, and earth attributes in succession, which are perfect for my needs. Combined with the remaining heavenly treasures I have, I can almost practice for half a month…"

In the past half-year, he went out to hunt for heavenly treasures nearly every ten days to half a month. Each time, he would encounter powerful combatants, including humans, beasts, monsters, demonic beings, ghostly entities, and more.

Without exception, perhaps every treasure land had powerful combatants guarding it or perhaps it was a law of this space.

Equally, each possessed terrifying strength, no less than the snow leopard he encountered when he first entered this space.

Initially, his expeditions were fraught with dangers. Later, he gradually gained experience and discovered a pattern: it seemed every combatant had their own territory.

As long as he escaped that territory, those powerful combatants would cease their pursuit.

Of course, it was also because he had greatly increased his strength in the first half-year, becoming stronger with each battle. Otherwise, even knowing this pattern, he might not have been able to escape the powerful combatants' pursuits every time.

However, such perilous adventures were naturally best minimized.

Now, not needing to go out and hunt for heavenly treasures for over half a month, he was naturally happy.

"A year has passed, and I feel that both my Martial Arts strength and Mental Strength are very close to completion. I wonder how much I can enhance my strength in the next half-month…" Lin Yun thought to himself.

Completion was out of the question. Martial Arts strength was manageable, but it was difficult to improve Mental Strength. The grey Crystals he had acquired before that could increase Mental Strength were long used up.

Only on the fiftieth floor of the Heavenly Principle Tower had he obtained a large amount of heavenly treasures that increased Mental Strength. In subsequent floors, apart from occasionally encountering one or two Ghost Practitioners from whom he could obtain grey Crystals, he hadn't come across other types of heavenly treasures.

These grey Crystals were clearly unique items found within Ghost Practitioners. The seventy-third floor space of the Heavenly Principle Tower also had Ghost Practitioners, but the combatants on this floor were too strong. He often didn't even have time to flee, let alone kill them and obtain the grey Crystals within their bodies.

This made Lin Yun quite regretful. If he had known earlier, he would have hunted more grey Crystals on the fiftieth floor, or he would have searched for and killed more Ghost Practitioners in the previous floors.

Of course, such thoughts were fleeting.

On the fiftieth floor of the Heavenly Principle Tower, he hadn't anticipated encountering a powerhouse like Lord Black so soon. By the time he met Lord Black, the opportunity to hunt Ghost Practitioners for grey Crystals on the fiftieth floor was gone.

In the subsequent floors of the Heavenly Principle Tower, the initial ones were still manageable, but thereafter he gradually realized the difficulty in obtaining heavenly treasures that increased Mental Strength. He had actually been very vigilant about the Ghost Practitioners that appeared, but, regrettably, the harvest was slim.

He also didn't expect the seventy-third floor to suddenly increase in difficulty so terrifyingly.

This led to his current situation.

"The combat strength on the seventy-third floor is too strong. Although my strength has greatly increased over the past year, thinking of killing one is simply impossible…" Lin Yun helplessly shook his head.

With his current strength, he estimated that he could defeat Wei Firestone or Ao Firestone within a move or two. Moreover, with the Bloodthirsty Sword's ability to absorb an opponent's lifeblood, he believed that killing his opponent would take only a few dozen moves.

A few dozen moves were incredibly swift for combatants of their caliber.

To annihilate a fourth-level Super Warrior within a few dozen moves, if word spread, it would definitely be an astonishing feat.