Although the crystals transported by the skeletons each time are small in size and contain little energy, they accumulate over time, and a lot of them should be collected in a month.

"Um... Actually, for some reason, I used up all the void energy crystals I mined, so I don't have many left now."

Li Ziyu simply stopped hiding and spoke directly.

Bepta nodded in understanding.

"You ate the Void Energy Crystal?"

For void creatures, void energy crystals are food, and eating them is a normal thing.

But the city lord has a big appetite. Can a human digest so many void energy crystals?

Or am I mistaken, and the human in front of me is actually very special and requires a lot of energy?

Li Ziyu's face darkened. "My teeth aren't that good, they're just worn out."

"No need to explain to me. A big appetite is a good thing. But City Lord, you are a human after all. Eating too many void crystals is not good for your body. In your human terms, it is easy to suffer from indigestion."

Bepta persuaded Li Ziyu seriously.

The corners of Li Ziyu's mouth twitched. He couldn't explain it clearly, so he simply didn't explain it.

You said you ate it, so eat it.

Anyway, it’s gone.

Li Ziyu is not in a hurry, and Bepta is even less so.

After bowing to Li Ziyu, Bepta slipped away.

As he expected, as the mine went deeper into the mountains, the speed of collecting void energy crystals became faster and faster.

A large amount of void energy crystals are transported out of the mountains every day.

At first it was the size of a fist, then the size of a human head, and later the void energy crystals simply needed to be held by the undead.

After waiting for a while, the void energy crystals in the warehouse finally began to increase, and the rate of increase became faster and faster.

Seeing this situation, Li Ziyu was no longer in a hurry to build a soul energy collector.

There are enough void energy crystals, and the soul energy collector can be manufactured at any time. Now is the time to accumulate more void energy crystals and return to the other world first.

It seems like I’ve been out for quite some time. I wonder if everything is going well in the other world.

Another month passed, and a large amount of void energy crystals had accumulated in the warehouse, and the unit had exceeded one million.

Li Ziyu finally decided to return to the other world.

The main building of the fortress.

After spending two months in the fortress, Bepta had become familiar with life there, and he received a call from the city lord Li Ziyu.

"City Lord."

Bepta bowed slightly as he entered the room.

Li Ziyu stood up with a smile and walked in front of Bepta.

"Have you been adapting to this period?"

"Well, life in this city is different from what I imagined."

"How's your recovery? Are you confident in opening the portal?"

"Don't worry, City Lord. I've reached my peak condition. Opening the portal shouldn't be a problem."

In fact, Bepta had almost recovered last month and even came to Li Ziyu to ask about the portal.

At that time, Li Ziyu had just come out of seclusion, and all the void energy crystals collected by the skeleton undead had been consumed.

After another month of recuperation, Bepta had fully recovered and was better than ever.

"There's a small problem now. The Void Energy Crystal in my hand may be different from what you remember. Can you use this Void Energy Crystal?"

After the void energy crystals enter the warehouse, the system will automatically integrate them and save them in the form of units.

Li Ziyu was also unsure whether Bepta could use this cube-shaped void energy crystal.

He took a piece from the storehouse and handed it to Bepta.

Feeling the energy filled in the void energy crystal in Li Ziyu's hand, Bepta took it with great surprise.

"This is a top-grade void energy crystal. It contains a large amount of void energy, and the void energy is distributed very reasonably. City Lord, where did you dig it from?"

There was a hint of doubt in Bepta's voice.

Of course he had seen top-grade void energy crystals before. Top-grade crystals were usually found deep in the void energy crystal veins.

But the naturally formed void energy crystals, or the top-quality void energy crystals cultivated by their void creatures are different from the one in front of them.

This naturally formed, top-grade void energy crystal looks similar to a void crystal. It is a prism and is dark blue overall. It emits void energy fluctuations all the time and is very easy to detect.

The top-grade void energy crystals cultivated by void creatures look like large pebbles, without edges or corners, very smooth, and with restrained energy. They may even be overlooked without careful inspection.

But the one in front of me is square and different from both the naturally formed top-grade void energy crystal and the cultivated top-grade void energy crystal.

Bepta couldn't figure out how Li Ziyu had transformed the void energy crystal into this state.

The outside of the void energy crystal is a crystal-like protective shell, and inside is void energy. Once the protective shell is broken, the void energy will dissipate in a very short time.

They, the void creatures, feed on void energy crystals, so they naturally thought about transformation, but without exception they all ended in failure.

Suddenly seeing a "manufactured" void energy crystal, and at the level of a top-grade void energy crystal, Bepta was very surprised, even though he was a battle maniac.

"Well, I just did it casually, just casually."

Li Ziyu was being careless. How could he know how to turn the void energy crystal into this shape?

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