After eating the stored grain, Li Mu felt better, but he was still a little weak, after all, the taste and nutritional value of the stored grain were not high, and it was just used for emergency purposes.

Those summoned delicacies can't really fill the stomach, and Li Mu has already tried the excavation in the past few days.

Li Mu looked at the aperture with palpitations, he was almost finished just now. And that resurrection ankh may also have to be upgraded, Li Mu's current body and strength have been greatly improved, if the level of the ankh is not enough, it will probably take longer for Li Mu to recover at that time, which will sometimes be very dangerous.

"Hey, there's a section of the aperture that turns black!" Li Mu looked at the black like a progress bar on the aperture, and suddenly realized something in his heart.

"It seems that this black card was probably made by sacrificing life and spiritual power." Li Mu looked at the progress bar and guessed.

Judging from his own extracted spiritual power, each aperture requires at least five hundred points of three-star spiritual power. I don't know if the spirit of the low star can be used yet.

The anxious Li Mu and the others recovered some of their spiritual power, and directly summoned the remaining humans who were sent to the two-dimensional world.

These people have very poor physique, and they all fainted directly after arriving here, Li Mu first took off the energy card, and then threw this group of people to the position just now.

Starting the altar again, Li Mu found that the color of the sword was darker, and the aperture was still at the same level as before.

"Is it really a sacrifice of life...... Li Mu looked at the few people who even disappeared together, his face was extremely ugly, if he hadn't kept an eye on the little fire horse to test it just now, he would have died at this time. It is almost impossible to resurrect without a corpse. Now Li Mu's ankh is not strong enough to reshape his entire body.

And...... In the process of being sacrificed, even the clothes on their bodies disappeared. If Li Mu really went in, then his card instrument and cards would be finished, and then Li Mu would not be able to leave the ground and completely die in this ghost place where no one was around.

"Sacrifice other than life?" Li Mu suddenly thought that in essence, the human body is also a substance, since in addition to spiritual power, ** can also be sacrificed, then other substances such as steel, clods, and even the stone of this building can also be sacrificed?

It was useless to think so much, Li Mu directly started the experiment.

First, he knocked down a few white stones where there were no lines, and then threw them into the circle.

"No response, but that's normal, otherwise the floor would have been gone." Li Mu was a little disappointed, these materials not only have their own cold attributes, but also are extremely strong, if they can be used for sacrifice, the effect will definitely be very good.

Li Mu then threw a piece of rare metal stolen from the research institute into it, and this time it finally succeeded, but the speed was much slower than absorbing life.

Li Mu tried different items one after another, and found that most of the items were okay, except for the white stone, and even the soil.

"But unfortunately, this sword seems to have become a bit of a mess." Li Mu could see from the sword shadow in the void that it was not as pure as before at this time, but the sword body was more real.

It is impossible for Li Mu to find hundreds of three-star Kaxiu to sacrifice, and now that he has this kind of shortcut, he naturally can't let it go.

Li Mu threw all the materials he found from the warehouse of the research institute except for those that could be used to make cards, and finally filled one of the rings......

"It seems that I can only dig a pit...... Li Mu had no choice but to continue his career of digging holes, and he planned to sacrifice the rest with soil, stones and ores.

Because the quality of these materials was too low, Li Mu dug for half a month before finally completing all the apertures. Halfway through, he ventured to the research institute to empty the rest of the materials. Otherwise, I don't know how long it will take to finish.

Now this sword has turned into a simple gray, but fortunately, there are still many blue lines on the surface of the sword body, the original power should not be covered, and Li Mu doesn't know what he will do.

After the aperture was completed, Li Mu used ten three-star energy cards in a row, and the black card finally had a new movement, only to see that the phantom jumped directly into the card from the sky.

Then Li Mu only felt that the mountains were shaking for a while, and the various lines on the entire building continued to be injected into the black card, and when all the lines disappeared, this mysterious and black card was finally completed.

Those lines that were originally black all turned white at this time, but Li Mu found that starting from the periphery of the altar, the lines were gradually turning black, and it probably meant that they could be used again after a while.

"It's the same." Li Mu compared the two black cards, and there was almost no difference in terms of shape.

Since it's a sword, it shouldn't be a problem to fuse with my magic sword. Li Mu's previous black card and the magic sword failed to fuse, and now this is the black card that was originally the sword, and the success rate should be much greater. And even if it fails, it will only be the loss of the magic sword.

Li Mu has always been a man of action, just do what he says, and directly summoned his magic sword.

Li Mu communicated with the magic sword a little, this magic sword was summoned by the cards in the game king, and there was basically no possibility of betraying him, so Li Mu was still very relieved.

Li Mu took the black card and the magic sword to the open space some distance from the palace, he didn't dare to experiment inside, in case the altar was damaged, it would not be good. Li Mu still wants to continue to use the altar, but unfortunately the special blank card used by the altar doesn't know where to get it.

Li Mu can learn to be obedient this time, not only standing far away, but also preparing Avalon, and defending with all his might if there is any change.

Li Mu put the black card on the ground and ordered the magic sword to fuse directly close to the black card. The hollow eyes on the skeletal hilt of the magic sword suddenly flashed with a flash of red light, and then the sharp blade stabbed directly into the black card.

The magic sword ran into the black card like this...... This made Li Mu on the side suspicious, and when he checked the information of the magic sword through the card instrument, he was shocked to find that the card had been scrapped.

Li Mu didn't understand the current situation, the previous time was that the black card was fused into Avalon, but now it is the other way around. Looking at the motionless black card on the ground, Li Mu walked over cautiously.

"It's okay, it's okay." Li Mu looked at the familiar words on the card and suddenly felt a lot more relieved, and a new weapon appeared on the card at this time.

Compared with the previous sword, the lines on the sword body were hidden at this time, and it looked very low-key, except for the skull with red eyes on the hilt, it was grinning wildly at this time, but because it was in the card, Li Mu didn't know what it was talking about.