In fact, when Xu Yi decided to buy a black card, he had enough confidence to be able to successfully perform the refining.

It is because he has to meet the two major conditions for sacrificing black cards. The frequency of energy input should be high and stable enough to last long.

The thunder bead bullets sprayed by the Maxim machine gun are so fast that they are enough to break the fourth-level talisman field. As for stability, as far as he is concerned, he, Xu, has never felt exhausted after countless battles.

After leaving the Four Color Seal, Xu Yi chose a deep mountain that was deserted and was ready to start the sacrifice and refining matter.

In order to avoid failure in the sacrifice and harming innocent creatures, Xu Yi activated the magical power of sound and drove away all the animals and birds in the entire mountain forest.

At the beginning of the sacrifice and refining, Xu Yi's mind was calm. This feeling was completely incomparable to the sacrifice and refining of the four-color seal.

As soon as the Maxim machine gun fired, the thunder marbles shot towards the black card quickly and steadily, and accurately pounced on the black card into the spiritual circle that was illusioned under the blessing of the secret technique.

After only more than a hundred breaths, the black card's body was gradually lit up. Half a cup of tea passed, and the whole black card had turned into a golden light.

At this moment, the spiritual circle that devoured the thunder bullet began to twist violently.

"Not good! You're greedy!"

Huang Mei shouted angrily, and a light gate exploded in front of Xu Yi. The next moment, he jumped in.

Almost as he jumped in, the black card exploded.

When Xu Yi fell out of the four-color seal again, he found himself in a deep ravine. He rose up and went straight up nearly a hundred feet before he landed on the ground.

The entire land was completely cracked and collapsed one by one. Then it soared into the sky, but found that a huge open space appeared in the entire mountain group, enough to build a town for hundreds of thousands of people to survive on this open space.

Further away, around the open space, more than ten mountains may collapse partially or all of them.

"You told you not to be greedy, you insist on greedy. People have said that the quality of this black card will be at most when the card body turns black, and you will stop. You will recharge the energy and the black card will explode. If you are not greedy enough, there will be disaster. Have you learned a lesson this time?"

Huang Mei posed like a life mentor and taught earnestly.

Xu Yi was too lazy to pay attention to him. This old man liked to pretend more and more, and gradually showed signs of addiction.

When he was performing black cards, Huang Mei never said a word. Until the aperture began to twist, this guy started to beep. At that time, even a fool knew something was wrong. It was just a hindsight. What's the use?

No matter what, this huge explosion is still meaningful. The most important significance is that Xu Yi figured out how terrifying it was when this black card really exploded.

Only by witnessing its power can we make the most appropriate footnotes for future usage strategies.

At this moment, he began to sacrifice and refine the second time. With the previous lesson, when the black card was about to turn red, Xu Yi stopped sacrificing and locked the black card with the secret method. A black card completed sacrificing was declared successful.

The black card completed by the sacrifice has returned to its original ordinary state. Without tentacles, no one could have imagined that there was the power to destroy the world.

After the sacrifice and refining was completed, Xu Yi returned to the bamboo house in the back mountain and fell asleep for several days. He rested until he was completely full and refreshed. He quickly stepped out of the gate of the thief, turned into the city, and entered a shop that operated a teleportation array.

An hour later, he appeared outside Baiyun Mountain.

Baiyun Mountain is the secret place of Yinting. There is no one guarding it there, but there are many restrictions. If there is no jade plaque issued by Yinting, people in the world will not be able to find it.

It was with the help of jade tokens that Xu Yi found this fairy mountain in the vast sea of ​​clouds.

This time, he came to Baiyun Mountain to fulfill the last reward given to him by the Central Palace - to enter the Sutra Cave for three months. The Sutra Cave is located in this Baiyun Mountain.

He followed the instructions of the jade plaque and walked through the mountains for more than an hour before he arrived in front of a cave with purple light. On the cave, there were three large ancient seal characters "Cangsu Cave" that were mottled and covered with dust.

Xu Yi took out the jade token and waved at the entrance of the Sutra Cave. The next moment, his body was involuntarily sucked in by the Ziguang Cave.

When he entered the cave, he did not step on the ground, but was suspended in a corridor made of light.

Walking along the corridor, there were caves made of halos. Xu Yi took a step forward and moved to the first cave entrance. Looking at him, he saw a white wall in the cave. The wall was ten feet across and eight feet high. There were both words and patterns on it.

After looking closely for a while, Xu Yi understood that this was a martial art.

"Nine Stars and Fire Blades, the top magical power in the spiritual realm." Before Xu Yi could do anything, Huang Mei in his starry sky ring cried out first.

Xu Yi suppressed the excitement in his heart and continued to explore the next cave.

After a full twelve hours, Xu Yi finally passed through the entire halo corridor and the forty-nine caves.

The settings in these forty-nine caves are almost the same. The only difference is that some caves are empty and some caves have shriveled corpses, which are obviously senior masters sitting here.

In addition, among the forty-nine caves, some recorded the entire magical technique, some were broken, and some were filled with various words and symbols, which could not be seen in it, and it was obviously deduced in it.

Xu Yi received almost no useful information about the Cave of the Sutra. He asked Xia Sibo, who meant that anyone who entered the Cave of the Sutra must keep his mouth shut and no one dared to spread the secrets in the Cave of the Sutra.

Because of this, the Sutra Cave has become the most mysterious existence in the Yin Court for years.

Seven days passed in a flash, and Xu Yi was still hesitant. He knew very well that he had only one chance to choose.

In other words, he could only step into one of these forty-nine halo caves, and he would never have the chance to step into the second one.

However, after seven days of going around, he felt that there was a place in every cave that tempted him. He really wanted to go into every cave and study it for a year and a half.

On the tenth day, all the halo caves began to fade. Xu Yi knew that there was not much time left, and if he didn't choose, this trip to the Sutra Cave would end early.

"Hurry up, hurry up, stop being too slow. In my opinion, I will choose the first place. Nine Star Li Fire Blade is definitely the top spiritual power..."

Xu Yi didn't say anything, Huang Mei was so anxious that she could not help but whistle and gave advice.
Chapter completed!