Another year has passed.

On this day, a violent energy storm suddenly erupted in the cave. The swirling energy spun faster and faster. At the center of the storm, a figure sat cross-legged. He reached into the air with both hands and shouted angrily, "Concentrate."

The energy vortex tightened rapidly, wrapping Ling Tian tightly, and then violently dissipated, leaving only the glowing cocoon standing in the dark cave.

Inside the cocoon, Ling Tian smiled. He had already stepped into the ranks of level five. Now, as long as he absorbed the huge energy of the light cocoon, he could break through to a true level five mutant in one fell swoop.

Ling Tian closed his eyes again, cleared his mind of distractions, and immersed himself in it.

…

"Break it for me!"

A week later, Ling Tian's shout echoed in the cave. The thin film of light shattered and Ling Tian emerged from the cocoon. At this moment, his temperament was as if he were out of this world, and his aura was restrained yet sharp.

"Hahaha, finally level five."

Ling Tian felt his own strength and was confident that if he met the strong man from before, he would definitely be able to escape successfully.

"However...the other party won't stand still, so we still can't be complacent."

For this breakthrough, Ling Tian gritted his teeth and used 90% of the Divine Life Milk. There was only a small bottle in the space, which probably contained only about 300 drops.

Although I feel sad, I don't regret it. After all, improving my realm is the most important thing. Fortunately, I can still get a drop every day. As long as I stay for a while, I can collect a lot.

But it is no longer feasible to rely on the Divine Life Milk to upgrade again, because now each small realm requires five or six bottles of Divine Life Milk. One drop a day, it takes a little more than one bottle a year. The process is too slow. It will take at least twenty years to upgrade to the sixth level. How many twenty years are there in a lifetime?

If he used the twenty years to collect corpse crystals and spirit crystals to upgrade, he would definitely reach a higher level, maybe even break through level 7. Therefore, Ling Tian has already planned to leave this place and return to land.

"The Ark should be fully restored in a month or so. Once it's operational, we'll leave. Before we go..."

Ling Tian looked at the stalactites on the top. He didn't believe that the divine milk of life would appear out of thin air. There must be an extraordinary secret in it. Now that he has broken through to level five, combined with the fusion of beast souls and blood sacrifice, he can give it a try.

Ling Tian flew to the top of the cave, took out a third-level peak long sword he made from the space, infused abundant energy into it, and slashed it suddenly.

"Bang~"

Seeing that the cut was only one centimeter deep, Ling Tian probably didn't think the beast soul fusion effect would be very satisfactory, so he immediately gave up the idea of ​​digging, but he didn't give up.

After returning to the ground, Ling Tian began to frantically refine metal to make equipment. He wanted to make a breakthrough. As long as he could make fourth-level alloy equipment, the effect would definitely be different. If that still didn't work, he could only wait until the level was raised again before coming back to dig.

Ling Tian mines, refines and builds equipment every day. He firmly believes that quantitative change will accelerate qualitative change.

Day after day, more than a month had passed in the blink of an eye. Driven by his self-abuse madness, just yesterday, he successfully produced the first fourth-order elementary alloy equipment, a mining pick that emitted a faint cold light.

After a day of adjustment, Ling Tian was already in peak condition. He looked at the top of the cave with burning eyes. Just as he was about to try out the power of the fourth-level weapon, there was a violent shaking in the space.

He was overjoyed, as he already knew why. He scanned with his telekinesis and found it was just as he had expected.

"Double happiness, hahaha!"

Looking at the ark floating in the air, Ling Tian was overwhelmed with joy. He could go back.

After being excited for a while, Ling Tian focused his gaze on the top of the cave again, flew up, concentrated his energy on the sharpest point of the pickaxe, and suddenly chiseled it.

"Bang~"

A loud bang echoed, and Ling Tian showed a little surprise when he saw a small hole the size of an egg being chiseled out on the top.

"It's a little better than I imagined, but it's still a bit slow. If the hidden things are too deep, it will be a headache. What should I do?"

Ling Tian was caught in a dilemma. He didn't know when he would be able to return. After such a long time, there was no guarantee that someone would find this place. He couldn't give up this great opportunity. It could condense such a magical object as the Milk of Life. The secret inside it was probably astonishing.

But if we dig, according to the current progress, we would be lucky if we can dig one meter deep a day. Who knows how deep we have to dig to solve the mystery.

"Let's try out the fusion mining effect first before making a decision."

"Drink~"

"Black Phoenix, fusion!"

Ling Tian's aura swept out like a hurricane, and his realm broke through all the way. In a breath, he had reached the fifth level of perfection. Although he had not reached the peak, the amplification effect was definitely rare.

The time for integration is limited, so don't waste it.

"Dong Dong Dong~~"

Ling Tian was like a perpetual motion machine, swinging his pickaxe and digging continuously.

However, it died down after a few tens of seconds and the effect disappeared, but this fusion gave him a big surprise.

"The fusion time has actually been extended to 45 seconds. What a qualitative leap! If that's the case, each level up will increase the duration accordingly."

Instead of thinking about it, Ling Tian looked at the pit that had been dug out for more than half a meter. His eyes became firm and he decided to stay and continue digging. He had a premonition that he would regret it for the rest of his life if he missed it.

"Roll up your sleeves and get to work! Keep going!"

Although it does not have the power of fusion, the power of the fifth-level ability plus the fourth-level equipment cannot be underestimated.

He dug deeper along the trail of the Divine Milk of Life, a little bit at a time every day. Ling Tian did not miss any of the gravel he dug out. They were so hard, perhaps they had other uses.

Seven days had passed. Ling Tian sat on a newly built temporary shelter in a ten-meter-deep pit. Through the glowing crystal, he could see that at this depth, a drop of Life Milk seeped out an hour faster than before. If this were the case, he would have to dig upwards for more than two hundred meters to reach his destination.

In order to confirm this hypothesis, Ling Tian spent another week. At this time, the depth reached 20 meters, and the speed of seeping out the divine milk was indeed shortened by another hour.

The guess was confirmed, and Ling Tian's worries were swept away. Now that the excavation depth was determined, it would be easy. Even if it was deeper, it didn't matter. It would just take a little more time.

With a goal in mind, Ling Tian became more motivated and his progress was surprisingly faster. It originally took him seven days to dig ten meters, but now he only did so in five and a half days. Even he was a little impressed with himself.

Another busy day passed. Now they were only fifty meters away from the target location. After nearly two months of crazy digging, Ling Tian had developed a serious sense of fatigue.

In order to prevent his negative emotions from accumulating too deeply and causing inner demons to appear, Ling Tian decided to take a two-day break.