"Isn't this a brain crystal," Qin Feng couldn't help but sigh as he looked at the small spars in his hand.

Since the Heaven and Earth Yuan Qi of the Earth Plane was filled again, every changing creature would produce this mutation characteristic, and the energy was highly concentrated to produce this polymer-like crystal in some parts of the body.

Because most animals are formed in the brain, they are collectively called brain crystals.

The more powerful the creature, the greater the energy contained in the brain crystal.

Of course, the convergence of heaven and earth vitality will gradually change the environment, and naturally generated mineral crystal nucleus veins will also be gradually generated, but it will take a long time.

"This is a special biological crystal nucleus, barely counted as a renewable resource, and it can be regarded as an alternative output of the earth plane, this kind of biological crystal nucleus has not been found in the Yuehua Continent plane so far, its formation should be related to the sudden change of weather vitality, the rapid accumulation of excess energy makes the body have no time to fully absorb it, and can only store energy in the form of crystal nuclei first." Mo Yue explained Qin Feng in detail after analysis.

"Doesn't that mean I have this thing in my head?" Qin Feng pointed to his head and said, thinking that he also has this kind of thing in his head, it always makes people feel weird.

"At this stage, you also have it, but through cultivation, as your cultivation improves, the energy in the brain crystal will gradually integrate into your body, but if you don't have the means of refining, the brain crystal will always exist, and it will only gradually increase the level of energy." Faced with Qin Feng's curiosity, Mo Yue could only solve his doubts one by one.

"Are you going to return to the Earth plane now?" Mo Yue asked Qin Feng.

"Don't go back for the time being, since I've come to this Huai'an City, I plan to go out and take a look, after all, I have to settle here first in the future, and it's better to explore the general situation here first." Besides, it is not good to say goodbye so suddenly, it is easy to arouse the suspicion of others. "Qin Feng plans to go out and have a look before making a decision.

When he went out of the room, he didn't see Liu Ruoling, so Qin Feng went out of the inn directly, planning to go around the street.

There are many shops on both sides of the street, mostly two-story or three-storey small buildings, restaurants, inns, pawnshops, grain stores, etc. stand along the street, and the voices of people are boiling, so it is not lively.

Qin Feng walked slowly on the street, looking at the shops on both sides of the goods with a wide variety of goods and sufficient quantities, people's mental state was very good, and business was very prosperous.

Qin Feng was very interested in some gadgets sold on the street, but unfortunately he was shy in his pocket, and there happened to be a pawnshop in front of him, so he walked in.

As soon as he entered the door, a guy greeted him, and carefully looked at Qin Feng, fortunately, the Yuehua Continent admired the cultivation of immortals, so many people were dressed differently, but the guy didn't feel too strange.

"What do you want to be this son?" The guy said with a smile on his face.

"Do you collect hedrons?" Qin Feng said and took out a few white spars.

The guy saw the spar and hurriedly said, "Accept it, why don't you accept it, you can take as many as you want." Wait, I'll look at the energy purity. As he spoke, he went to the counter and took out something that looked like a single-sided lens and clamped it to his eye.

"Hmm, the purity is not bad, one low-grade spar is worth one hundred crystals, five are a total of five hundred crystals, do you want to change some more crystals?" The guy said with a smile on his face.

"Okay, let's change these first," Qin Feng said as he stretched out his hand and handed out five spars.

Just when Qin Feng was changing the spars, Liu Ruoling happened to pass by, and when he saw Qin Feng, he walked in.

"Childe, these five spars are worth at least six hundred crystals, you have lost money." Liu Ruoling saw him hand out the spar, and hurriedly stopped it.

Before Qin Feng could move, the guy hurriedly drank: "Where did the little girl come from, it's bad for my business." As he spoke, he was about to stop Liu Ruoling from continuing to approach.

Qin Feng came to exchange for spars, just to understand the market and exchange some pocket money by the way, to buy some gadgets on the street, he knew that the guy would definitely make more money by pit him as a foreigner, and he didn't want to worry about the guy, but this person's disrespectful remarks to Liu Ruoling made Qin Feng a little displeased.

So he said: "Your guy's business is business, and you are a customer when you come to the door, so you plan to bully customers and speak so badly." Qin Feng also used his strength when he spoke, which shocked the guy a little dizzy.

Seeing this scene, the shopkeeper hurriedly walked out and said to the shopkeeper, "Go and do what the young lady said, hurry up and get a 600-point crystal card," and said like Liu Ruoling accompanied him.

It turned out that Liu Ruoling's uncle usually took care of this store, and some of the more miscellaneous goods were also sold through this store, so he was a business partner, but Liu Ruoling was going out to do business with his uncle for the first time, so he didn't know about it.

The shopkeeper saw Liu Ruoling and his uncle going in and out yesterday, and only then did he recognize that it was Miss Liu, so he went out to confess.

After a while, the guy brought a white jade tablet, only to see some white spots flickering on the jade piece, it turned out that some spar powder was mixed into it when refining the jade piece, so as to record the crystal information.

Qin Feng looked at these with great interest, but he didn't expect that this seemingly backward ancient world would have such a developed "technology".

"What is the purpose of the lens that the shopkeeper just clamped in the corner of his eye?" Qin Feng asked curiously again.

"It is a kind of detection magic weapon, you can see the energy contained in the spar and then convert it into the number of crystals, it is a relatively common magic weapon, ordinary people can also use it, it can automatically absorb the free energy from the outside world without needing to recharge." The shopkeeper answered Qin Feng's questions one by one.

"Where is this stuff sold?" Qin Feng asked again.

"There is a magic treasure shop at the end of this street, selling more of this kind of thing, Childe can go and have a look", the shopkeeper walked to the door and pointed to Qin Feng.

"So, we'll take our leave," he said, beckoning Liu Ruoling to leave the pawnshop and walk towards the end of the street.

"Qin Gongzi is really interested, he didn't recover from his injuries alone, but went shopping." Liu Ruoling and Qin Feng walked side by side, with some blame in their tones.

Qin Feng smiled slightly and said: "Miss Liu, it's really tired after lying too much in the room, so I plan to go out for a walk to relieve my boredom, I first came here, I originally planned to ask you to introduce me, but I didn't see you and that cute little girl in the inn, so I had to go out alone." ”

"I just took my sister to find my uncle, my sister Xuan'er misses her uncle and has to follow her uncle to buy goods, I had to take her there, I saw you in the pawnshop when I came back, I was afraid that you would suffer a loss, so I asked Qin Gongzi not to blame." Liu Ruoling brushed the hair around her ears and said apologetically to Qin Feng.

"Okay, I'll take you around this Huai'an Market, there are some new and interesting things here." Liu Ruoling heard that Qin Feng wanted her to explain on her behalf, so she said again.

After speaking, the two of them walked along the long street, and when they encountered something of interest, they stopped and took a closer look, and they were leisurely.