It's not very difficult to change the array base.

First, you must stop the Zhoutian Star Dou array, then find the array base, take out two top-grade spirit stones, and finally embed two top-grade spirit stones into the formation according to the previous arrangement method.

However, it took Yang Yu more than an hour to change the base of the formation. After all, this Zhoutian Star Dou array is not an ordinary formation. If there is a slight mistake, the entire formation may be over, so he can't help but be careful.

After changing to the top-grade spirit stone, Yang Yu clearly felt that the entire Zhoutian Star Dou array had become more stable and the starlight was triggered. Invisibly, the power was increased by 30%, which made him very happy.

"The current Zhoutian Star Dou Array has two top-grade spirit stones, and the formation is made of 365 medium-grade spirit stones. If the spirit stones of the formation are replaced with 365 fast top-grade spirit stones, the power of this formation can be increased by at least three times, which is almost enough to resist the semi-saints."

A top-grade spirit stone is equivalent to ten medium-grade spirit stones and one hundred low-grade spirit stones. However, in the martial arts world, there are really too few top-grade spirit stones. It is easy to exchange high-grade spirit stones for medium-grade spirit stones and low-grade spirit stones. If you want to exchange low-grade spirit stones and medium-grade spirit stones for high-grade spirit stones, as long as you are not stupid, no one will exchange them for you.

"Maybe there are countless top-quality spirit stones in the Crystal Palace." Yang Yu murmured to himself, a light flashed in his eyes, but if he was asked to go to the Crystal Palace again, he would not dare to kill him. The terror of the Nine-Clawed Dragon was enough to discourage him.

As soon as he got up, he looked at Yanling Lake.

"Big python, whether you can transform into a dragon depends on your luck." Yang Yu took out the inner pill he had obtained.

The figure disappeared. It was already at the lake.

"Roar!" Feeling Yang Yu's breath, the python crawled out of the water.

Looking at the python. Yang Yu glared at it first: "Next time I dare to steal spiritual honey, I will definitely peel your skin and thigh your tendons."

When the python heard this, he was shocked and almost got into the water and couldn't come out.

"Okay, don't be afraid, I'm talking about next time." Yang Yu shook his head, "I'm here this time to give you a chance."

Don't the python understand very much?

"Did you see it in my hand?" Yang Yu presented the fiery red inner pill in front of the python, "This is an inner pill with extraordinary effects and terrifying energy. I'll give it to you."

The python's eyes lit up. He seemed to have a innate sense of the inner alchemy. His intuition told him that the inner alchemy was definitely a divine object that helped it evolve.

"roar!"

"Take it!"

Yang Yu threw the inner elixir over, and the python was extremely excited. He swallowed the inner elixir in one mouthful, looked at Yang Yu, showing deep gratitude.

"Strive to transform into a dragon. I have given you too many resources to not let me down." Yang Yu said and turned around and left.

The python wanted to completely digest an inner elixir, which was definitely not something that could be done in one or two hours. It was meaningless for him to stay here, and the python looked at Yang Yu's back and was silent for a while. He dived into the water.

Three days later, a roar came.

"It's the sound of a python." Yang Yu suddenly looked at Yanling Lake. Many disciples also looked there, roaring for this life. The sound was really too loud.

By the lake.

"Look, the scales on the python are getting more and more, and the bulge on the head is getting sharper and sharper. It must be that it is turning into a dragon."

"I'm excited. There will be a dragon in my Haotian Sect soon. If I say this, I will definitely be very proud. It depends on who dares to say that we have no foundation."

"Jiulong, if you continue to evolve, you will become a real dragon. I'm looking forward to the time when my Haotian Sect has a real dragon."

...

Many disciples were watching, and even Yang Yu came, they did not notice it.

"roar!"

The python endured the severe pain. Its body hovered in the lake water. From time to time, a black light flashed across its body. There were more and more tiny scales. Because of the growth of scales, blood stains appeared in many places.

"Husband, it is probably a matter of no event in a thousand years. After evolution, the python should have the strength of a god-level warrior." Tang Wei appeared behind Yang Yu.

"Well." Yang Yu nodded, "The reason why I didn't kill the python was because I felt that its future was limitless. The dragon was just the first step. Maybe one day, it could really evolve into a real dragon."

"Husband, let's not talk about whether it can evolve into a real dragon, but the skin it sheds now is all treasures." Tang Wei smiled. This seemed to be her purpose.

"Skin, baby?"

"The first purpose of the skin shed by the python is to make it into a defensive inner armor, which is very comfortable to wear on the body and can withstand ordinary sword attacks. The second purpose is to refine medicine, crush it, and make it into powder, which has the effect of stopping bleeding and refreshing the spirit." Tang Wei explained.

When Yang Yu heard this, he felt a little moved. He looked at the python. Every time some scales grew, the skin on the outside fell off. The python was very big, but in the past ten minutes, the peeling skin was enough to make a few inner armor.

"roar!"

The python screamed again, and many scales grew faster and gradually, its whole body became darker and darker, and every inch of black was a scale of one inch.

An hour later, 80% of the python's body turned black, and the scales became denser, but Yang Yu could clearly feel that the python was struggling, as if it had encountered a bottleneck in evolution.

"The energy required for the evolution of the python is too great. Husband, do you still have elixirs and spirit stones? Anyway, as long as it can provide energy, I will give it, otherwise I am afraid it will not evolve." Tang Wei suddenly spoke.

Yang Yu was stunned: "Okay, if you cannot complete evolution this time, you will lose all your efforts."

Thinking of this, Yang Yu grabbed a handful of spirit stones and threw them over.

The python noticed Yang Yu's movements and sucked the spirit stone into its mouth with a sudden suck. However, just as soon as it swallowed the spirit stone, its evolution seemed to be three points faster.

"This..." Yang Yu was surprised. The python was in the spirit stone mine before, but at that time it had the speed of absorbing spiritual energy.

"When evolving, the python was in urgent need of energy, and its body could absorb energy hundreds or even thousands of times. This is just a kind of self-adaptation of living things. Just like when people are hungry, they will eat much faster unconsciously." Tang Wei explained a little.

After knowing this, Yang Yu ignored it and threw many spirit stones over, even the Yuan Ling Pills were thrown over more than a dozen, but it seemed that it was not over yet. He threw all the Yuan crystals he had obtained before.

The python was like a greedy snake, and seemed to be addicted to eating it. He didn't even want to evolve and kept staring at Yang Yu.

"What else do you think? If you can't evolve today, I'll stew you with soup tonight." Yang Yu shouted.

The python was startled when he heard this.

The disciples around were also stunned. Isn’t this too tempting to stew a python that was about to evolve into a dragon? Some disciples even hope that the python will not evolve successfully. After all, I have never tasted such a snake soup.

I don’t know if what Yang Yu said is true. The python is now full of strength. The scales on its body are covered by 95% in a blink of an eye, and less than three breaths below are already completely covered. This shows that the evolution of its scales has been completed, and the most important thing is the head.

The python felt itchy on its head, as if something was trying to get out, but in the end, it was useless for a long time, but it still found that it was not possible.

"Damn it, I really lost my money after raising you as a waste." Yang Yu looked at the python, "This is a top-quality spirit stone, swallow it quickly!"

The python was stunned and looked at the thing Yang Yu threw over. He was immediately delighted. Without thinking, he swallowed it in one bite. Then a huge energy filled his whole body. The energy quickly gathered together and then reached the top of his head.

"Edict!"

Something came out of the head, and the python had not seen it yet, but the Haotian Sect around could see it clearly. It was a long black horn that emitted black light and had a momentum that pierced the blue sky.

"Ao!"

The python roared to the sky, and its whole body seemed to have a coherent reaction. The first thing was that long fangs grew in its mouth, its head became more and more pointed, and some long black beards appeared on its mouth, and four black claws were poked out from under its body.

"The evolution has been successful." Yang Yu murmured to himself.

Tang Wei nodded: "It's successful, this is the dragon. Although there are many dragons in ancient legends, the real dragon is like this. Because it is not a real dragon, it is just a one-horn now. When it evolves into a real dragon, the one-horn degenerates, and the four claws under it will also evolve into five claws."

The python also noticed its own changes. It was already overjoyed and was about to roar a few more times, but suddenly it felt numb. Then it found that the muscles in its body began to contract, and its huge body shrank by one third in a blink of an eye.

Only then can evolution be considered complete.

"Yes, the big python... I can't call you a big python now. Judging from your appearance, your whole body is black and very majestic. I will give you a name, Heifeng!" Yang Yu said.

Tang Wei couldn't help laughing secretly. The name was named. The blood-sucking god bat was called Heiqiu, and a dragon was called Heifeng. It was really nonsense. However, the python didn't know whether it was good or bad. But when he heard Yang Yu named it, he roared a few times and agreed first.

"That... Heifeng, just evolved, show us both." Yang Yu thought for a while, and the disciples around him were already looking forward to it.
Chapter completed!