The current spirit stone is different from the spirit stone of the ancient cultivation era. In the Ancient Xiuzhen era, the spirit stone was a kind of ore, which circulated in the Ancient Xiuzhen Continent as a trading currency and a necessary thing for cultivators to cultivate. But the fall of the ancient cultivator era was precisely because the ancient cultivators plundered the aura without scruples. The greed of the ancient cultivators caused the spiritual energy of the ancient cultivators to dry up, and the spirit stones were also consumed, and finally went to destruction.

Since the opening of the new Xiuzhen civilization, it has learned the lessons of its predecessors, so it has also changed its treatment of heaven and earth aura. The spirit stone of the new Xiuzhen era is a good example. The current spirit stone is a renewable spirit stone, at the end of the ancient Xiuzhen era, the emergence of the Liuhua hypothesis and the Yang Di hypothesis, and the confirmation of the existence of the spiritual energy sub. The law of conservation of psionic seeds proposed by Mr. Wu Hao pointed out a feasible path for the circulation and regeneration of Reiki.

A thousand years after the two hypotheses were proposed, a generation of research mad Zuo Liu synthesized a material that could contain spiritual energy - green crystal. The synthesis of green crystal has cross-era significance, and in that golden period of the development of the new Xiuzhen civilization, green crystal spread throughout the entire Xiuzhen Federation at a terrifying speed.

The green crystal is just a container that can hold psionic energy, as long as the psionic seeds scattered in the air are guided into the green crystal, they will be fixed by the green crystal and become a stable and reliable psionic stone. The fixed psionic energy can be absorbed by the cultivator, and after use, it will be transformed into psionic seeds, which will disappear into the environment and can be recycled. This psionic stone is also known as a new spirit stone. This new spirit stone, combined with the spiritual energy transmission rune, can activate the magic weapon, so it is also listed as one of the top ten inventions of the era in the new Xiuzhen era.

Soon after the synthesis of green crystal, New Era Company invented the green crystal synthesis machine and the psionic energy injector, and completed the mass production of green crystal for the first time. The industrialization of the new spirit stone has also written a strong stroke for the new Xiuzhen civilization, and the development of the new Xiuzhen civilization is more rapid.

The new spirit stones are divided into different grades, ranging from one to ten levels, and the industrially produced spirit stones can only be first-class and second-grade spirit stones. Because the spiritual energy scattered in the air is not pure, mixed with a variety of psionic seeds with different attributes, so the spirit stones above the third level cannot be industrially produced, and the refiner must carve the spiritual energy filter runes on the green crystal and guide the spiritual energy into the green crystal to complete, so the spirit stones above the third level are much more valuable than the first and second level spirit stones.

A third-level spirit stone with 10,000 cultivation coins is difficult for ordinary people to use as daily energy. It is undoubtedly a sky-high price for Gu Hao, the most expensive spirit stone he has ever used is only a second-level spirit stone, and there are more than 400 real coins.

Determined that Gu Hao did not hesitate any longer, carefully hid the space instrument, quickly got out of the attic, ran in the direction of Buye Street, and soon disappeared into the night.

The third-level spirit stones are different from the first- and second-level spirit stones, the first- and second-level spirit stones are sold in their grocery stores, but the third-level spirit stones must go to the refiner base in the center of Longshan City to be sold.

At this time, it was already late at night, and the late night in summer was not hot and dry, but at this time, Gu Hao was already soaking wet. After running to the refiner base, Gu Hao took a deep breath. Looking at the building of the refiner's base, Gu Hao was slightly in a daze, and Mu Ne's gaze fluctuated.

He had been to the building more than once, but he had never entered. Every time he saw a few words on the refiner's base, he was a little dazed.

After sorting out his emotions, Gu Hao slowly approached the building.

"Welcome. The waitress at the door saw Gu Hao walk in and showed a professional smile.

She didn't underestimate Gu Hao because of his clothes, and the guests who came here often had some strange people or rich second generations dressed up as ordinary people. Last week, one of her colleagues was fired and lost his high-paying job because he looked down on a guest who turned out to be a big man.

It was already late at night, and on the first floor of the refiner's base, there were only a few guests. Gu Hao simply glanced at the first floor, and he was shocked by the dazzling array of refining materials. A lot of the material was what he had seen in books, and there were some materials he didn't recognize. His face was still calm, and he didn't show any gaffes.

"What does Mr. need?" the waiter looked at Gu Hao with a smile: "We have more than 1,400 kinds of materials here, and the refining materials below the fourth level are complete. ”

Regarding the waitress's enthusiasm, Gu Hao was a little uncomfortable and a little restrained.

"I need a third-level spirit stone. Gu Hao swept the first floor of a building and said politely.

"Yes, sir, please come with me. The waitress's smile deepened, and as she expected, the young man was a gold lord. Those who can use third-level spirit stones are generally people with status in Longshan City, or refiners, and cultivators. Ordinary people wouldn't use third-level spirit stones at all. A third-level spirit stone with 10,000 cultivation coins, her performance today has been completed.

"May I ask what attribute spirit stones do you need, sir?" The waitress took Gu Hao to a glass counter, and there were hundreds of spirit stones placed on the counter, with different colors of gold, green, blue, red, yellow, white, and purple.

There are seven attributes of psionic sons, which are gold, wood, water, fire, earth, wind and thunder, and according to the different spiritual energy required, cultivators can choose spirit stones with different attributes. This is also one of the reasons why spirit stones above level 3 cannot be industrially produced, and the spiritual energy of different attributes is injected into a green crystal, which may have the danger of exploding.

"I need an attribute-free one. Gu Hao thought for a while before saying.

The use of instruments, in addition to the battle magic weapons of cultivators, is generally the use of spirit stones without attributes. No attribute spirit stone, to put it bluntly, it is possessed of all five attributes, the five elements are circulating, and it does not show a certain attribute, so it is no attribute. Now to activate the Space Meter, it is most appropriate to use a non-attribute spirit stone.

"Okay, wait a minute. The waitress smiled politely, and then took out a multicolored spirit stone from the counter.

The spirit stone is not big, only the size of a glass bead, and its brilliance is restrained, containing but not emitting. On this spirit stone the size of a glass bead, you can also clearly see the runes, and the golden light is emitted. He had seen this kind of rune in books more than once, but when he saw it now, he still felt extremely complicated.

Gu Hao handed the money card in his hand to the waitress and took the spirit stone. The spirit stone is somewhat transparent and radiant. In Gu Hao's hand, he couldn't feel the spiritual energy fluctuations, and it looked similar to ordinary glass beads.

After packing the spirit stones in the box, Gu Hao couldn't wait to walk back to the grocery store.

Along the way, Gu Hao was a little apprehensive, if he couldn't activate the space instrument this time, he was afraid that his 10,000 cultivation coins would be wasted. With apprehension, Gu Hao returned to the grocery store again and quickly ran to the attic.

After skillfully loading the spirit stone in his hand into the energy trough of the lampstand, Gu Hao rubbed his palms before slowly picking up two ferrosilicon wires and approaching the space instrument.