Heaven-defying Upgrade System

Liu Fei's words just now were double. When he said his name, he also told Si Yin that there was no need for him to introduce himself anymore. I know your name is Si Yin!    

    

Si Yin nodded her head, clearly understanding what Liu Fei meant. Then she said, "Just call me Si Yin. There is no need to add another girl. It seems like you are treating me as an outsider!" Si Yin smiled and said, "I am just a small Scouting Officer in this region. I don't have any prominent family background. You should be able to tell that I don't have many friends. You are one of them and you have saved my life twice... Although my next request is a bit unreasonable, but can you stay here for a while and give me some guidance if you have the chance... I really want to make a name for myself!"    

    

After Liu Fei heard her, he didn't seem to have any intention of rejecting her. Anyway, there was no place to barge in here, so he might as well stay with her for a while. He could use this period of time to understand this world through Si Yin.    

    

Liu Feidao said, "Okay! However, as repayment, you should also take out something..." As he spoke, he narrowed his eyes and looked at Si Yin.    

    

A red cloud immediately flew over to Si Yin's face and suddenly became somewhat hesitant. She stuttered, "That... What... What do you want... What do you want... As long as it is not too excessive... I... I can promise you..."    

    

Liu Fei looked at the little girl and secretly laughed in his heart. It seemed that she was very clever. She knew what kind of reward she would have to pay. And the only thing she could think of that had value was none other than herself! Liu Fei knew that this little girl was thinking the wrong way, so he lightly knocked her little head. What are you thinking about?" he asked. What I mean is, I want you to introduce this world to me. After all, this is my first time here, I'm not familiar with the place! "    

    

After being seen through by Liu Fei, Si Yin instantly became even more embarrassed. She wished she could find a hole to hide in. However, it was fortunate that her mental fortitude was strong. She took a few breaths. Then she calmed herself down. She was really afraid that Liu Fei would make some unreasonable request...    

    

"Okay!" Si Yin heard that it was only such a simple request and immediately nodded. She then said to Liu Fei, "But let's not talk about it for now. Today, the higher-ups have given us another important task. I have to make a trip there first. When I come back, I will tell you... hehe." As he spoke, he suddenly smiled and said, "You stay at home and don't mess with other people's things!"    

    

After saying that, he left.    

    

Liu Fei was left behind, staring blankly at her back as she left.    

    

Liu Fei did not have anything to stay in Si Yin's nest. He was bored, so he walked to the street. Instead of calling it a street, it would be more accurate to call it a thick tree branch. The environment here was quite complicated. The streets were not only crisscrossed, but also densely packed. Moreover, there were layers upon layers of them up and down. It was very easy to get lost.    

    

Liu Fei was not familiar with the geography of this place yet, so he did not dare to go too far. He only started to walk around Si Yin's house. Fortunately, after his cultivation base had increased, his memory had also increased. The place where he was at. Every path he had passed through was clearly imprinted in his mind, and it wouldn't be a problem for him to return.    

    

This world wasn't dull either. No matter where he went, he would be able to see shops all over the world. There were even some places for leisure and entertainment, such as taverns, brothels, casinos, and so on and so forth. It was just that the facilities inside were different from the outside world. Liu Fei looked at his attire and saw that he was still dressed in black. Moreover, when he entered the secret realm, it was already tattered and tattered. He then looked at the people around him. The clothes they were wearing were very unique. Not only were the colors colorful, even the designs were similar to modern clothing from Earth.    

    

Liu Fei, on the other hand, looked out of place when he was walking on the street.    

    

When he arrived in front of a clothing store, Liu Fei walked straight in. He then picked out a few clothes that were the same style as the ones worn on Earth. When he picked up these clothes and was about to pay, Liu Fei stood in front of the counter and was stunned.    

    

He didn't know what kind of currency was flowing in this secret realm. Gold? Silver?    

    

Was this a place with gold and silver?    

    

Could it be Green Source Crystal Stone? But when Si Yin gave it to him yesterday, he did not take it! Liu Fei immediately regretted it. If he had known earlier, he would have just accepted it!    

    

"Can I ask, what can I use to pay the bill here?" Liu Fei walked to the counter and asked.    

    

The person standing in front of the counter was not the old shopkeeper, but a delicate and pretty girl. When he heard Liu Fei ask, he was slightly stunned at first, then he smiled. She said, "What you want to say is whether or not you can use a card or a crystal, right?" Then the girl said, "Anything is fine. Comparatively speaking, it is more convenient to swipe your card."    

    

"Card?" Liu Fei thought that he could still use the card here? Could it be that he could still use a bank card?    

    

Seemingly sensing Liu Fei's doubt, the girl took out a thin green crystal card. Like a green leaf, she showed it in front of Liu Fei. After that, she looked at Liu Fei curiously and said, "Don't tell me you don't know about this kind of crystal card? There are points inside."    

    

"What points?" Liu Fei asked shamelessly.    

    

The girl was kind and patiently explained to Liu Fei, "One green crystal is equivalent to ten thousand points here. Everyone here has a crystal card. You don't seem to belong here, do you? "The girl looked at Liu Fei's forehead as she spoke. It was obvious. There was nothing on Liu Fei's forehead. On the girl's forehead, there was a pattern that represented the White Wood Clan. However, the color of the pattern was slightly dimmer than Si Yin's. When the girl looked at Liu Fei, if this was the case... Liu Fei guessed that the pattern was brighter and dimmer. Was it related to one's cultivation level?    

    

However, now was not the time for Liu Fei to think about this problem. Just now, the girl said that a green crystal was equivalent to ten thousand points in a crystal card, and a green crystal was equivalent to a hundred thousand points. One crystal. A Green Source Crystal Stone was equivalent to a million points!    

    

"Then how many points do these clothes cost?" Liu Fei asked.    

    

"These are just ordinary clothes. One piece only costs one or two points." The girl answered patiently.    

    

Liu Fei was sweating profusely... It seemed like a Green Source Crystal Stone really had an extremely high price. It was just like using Spirit Stone to exchange for silver in War God Continent. However, the Green Source Crystal Stone and Spirit Stone did not communicate with each other at all. There was simply no comparison between the two. However, Liu Fei did not have any Green Source Crystal Stone on him. He wondered if he could use the Spirit Stone to pay the bill.    

    

Liu Fei took out a low grade Spirit Stone and carefully asked the girl, "Do you accept this kind of thing here?"    

    

The girl stared at the Spirit Stone for a while, then shook her head and said, "It looks very beautiful."    

    

"I..." Liu Fei did not expect that the people here would not be able to feel the spirit energy inside the Spirit Stone. It seemed that using the Spirit Stone to pay for the debt was indeed not feasible! He could only put away the Spirit Stone bitterly.    

    

"System!"    

    

At this moment, Liu Fei decisively opened the system and said to it, "Is there any way to get the Green Source Crystal Stone?"    

    

"As long as you want it, you can do it." The system said in a simple and clear manner, "Reducing a Green Source Polar Crystal only requires the host to use 1000 points to exchange for prestige."    

    

As for how much Reputation was used, Liu Fei did not care. After all, this thing could not be connected to a Spirit Stone. In terms of value, it could only be used to exchange Reputation as a reference. Liu Fei directly spent ten thousand to exchange for prestige, and exchanged for ten Green Source Polar Crystals. He didn't know how long he would have to stay in this mystic realm, and it would be easier to travel with more wealth on his body.    

    

After obtaining ten Green Source Polar Crystal, Liu Fei had an idea in his heart. He placed the few clothes he had picked on the counter and said, "Little girl, calculate it. How much is it?"    

    

The girl directly reported, "It needs to be counted at twelve o'clock in total."    

    

Liu Fei took out a piece of Green Source Polar Crystal...