At this time, Gou Yu was excitedly walking back and forth in this underground palace, and after seeing Li Yunfei and Jiu Jiu appear, he immediately raised his head and shouted: "Woo woo"

Li Yunfei fell directly on the dog's head, and saw that the metal monster was gnawing a large piece of metal ingot like a dog gnawing on a bone at this time. [Full text reading]

There were several rows of these metal ingots on the ground, and they were all pieces of iron essence.

After swallowing a few pieces of iron essence, the dog immediately walked to the side again, and when he saw the metal he liked, he swallowed one or two pieces, and at the same time kept shaking his body, looking extremely excited.

Li Yunfei found that the metal blocks swallowed by this metal monster were all iron essence, fire copper, and so on, and occasionally some Mithril, but there were not many.

Soon, the dog was almost finished, and began to climb the towering altar, and after a while, he had climbed to the point that Empty Flow City was originally a top two royal city, with great strength and legendary treasures, and what they worshipped was not the god of the father, the god of fire, or even the god of life, but the god of space

When the giants invaded and the city was about to be destroyed, the high priest of the empty city led a group of believers into the underground palace to perform a ritual and sacrifice to the god of space, hoping to impress the god of space and let him save his pious people.

Therefore, the people of Kongliu City set up a sacrificial formation with their treasures and their own lives in the underground palace, and at the same time offered the most precious treasures of the entire Kongliu City as the center point of the sacrifice.

After doing all this, the High Priest led the 10,000 believers present to commit suicide en masse, hoping to use their own blood and soul as a sacrifice and get the help of the God of Space to save the entire Kongliu City from danger.

In the latter case, all the people, including the high priest, died, so they did not know. It's just that according to the history that Li Yunfei knew, it seemed that this sacrifice was useless at all, and Kongliu City was still attacked by giants and finally slaughtered.

Li Yunfei couldn't help but sigh, originally he thought that this was the secret vault of Empty Flow City, but he didn't expect it to be a place for sacrifices.

In this world, only you are the most reliable, but unfortunately these people don't understand, but they die in vain, it's better to fight with giants to make a good deal.

However, what exactly is the so-called "most precious treasure in the entire Skyflow City" is really curious.

Li Yunfei thought about it, took the metal box full of alchemy circuits and was sealed, and began to study.

After just a few glances, a flame ignited in his hand, and he quickly changed the alchemy circuit above.

Hearing a "pop", the metal box was indeed opened, revealing the contents inside.

To Li Yunfei's disappointment, it was not something like a rare metal or magic crystal that appeared, but a crystal bottle that was only the size of a finger, and the crystal bottle looked completely empty.

Li Yunfei couldn't help but be disappointed, and was about to throw this thing aside, when he heard Jiu Jiu suddenly say: "Jiu, the water in this bottle hasn't dried up yet." ”

Li Yunfei immediately took a closer look, and saw that there was still half a drop of transparent liquid in the crystal bottle, I don't know what it was, it looked exactly like water.

After thousands of years, there is still water in this bottle, which is amazing, and the circuit on this box must be studied carefully

Thinking of this, he immediately took the metal box and began to study it again.

At the same time, he casually threw the crystal bottle containing half a drop of water into the space ring.

It's just that what he didn't expect was that at the moment when this crystal bottle had just entered the spatial ring, a dazzling light like the sun was projected from his spatial ring

Immediately after that, his spiritual power could see that the space in the entire spatial ring was rapidly expanding, and in the blink of an eye, it had reached the size of several football fields, which was already huge than the underground palace in front of him, but it was still expanding