Lu Yu opened his mouth and took a big breath, absorbing all the metallic spiritual energy in the air into his body.
After absorbing all the metallic aura, Lu Yu's whole body suddenly glowed with a faint golden light. From a distance, it looked like he was wearing a battle armor.
"These metallic auras are enough to save me half a month of hard work."
Lu Yu was also a little surprised by this result.
Lu Yu practices the skills of ancient immortals. It is much more difficult than other immortals to make progress in the Qi of the Five Elements.
"It seems that the auctioneer was right. This is the best gift for the disciple."
Lu Yu noticed that there was another formation next to him.
Although these metallic tigers are powerful, they cannot leave the confines of the cave.
If it is really a later disciple of that Tao Lord who breaks into this place and finds that he is outmatched, he can leave to avoid the danger temporarily.
Of course, if you don't even have the ability to escape, then there is nothing to say if you die here.
Thinking of this, Lu Yu did not hesitate at all and continued walking towards the passage behind the door.
After walking through the passage, one or two tigers still appeared, but they were no match for Lu Yu and were killed one after another.
Suddenly, the vision suddenly opened up, and an independent space appeared in front of me.
There is some more light here, but it is not produced by fire candles, but by the cold light stars gathered on a long sword.
Iron will only reflect light where the sun shines. But for some fairy weapons, even in places where there is no light, it can still emit dazzling light.
These long swords gathered together to form a tall sword platform, and an old man sat on it.
The figure of the old man was a bit illusory and did not look like a real person. When he saw Lu Yu walking in, he suddenly opened his eyes.
"Play chess." The old man opened his mouth and said only two words.
Lu Yu frowned and looked around.
The formation here is more complicated than before.
Even if he wants to crack this formation, it will take a certain amount of time.
However, the old man's sudden appearance aroused Lu Yu's interest.
"Are you the formation spirit of this formation?" Lu Yu asked.
The old man still had no expression on his face, he just repeated the same sentence: "Play chess!"
"Want to play chess with me? That's fine." Lu Yu walked directly to the old man without any hesitation.
In front of the old man, there is an iron plate with a chessboard drawn on it.
However, there are no chess pieces.
The old man remained silent, as if waiting for Lu Yu to make the first move.
"This chessboard is a bit interesting." Lu Yu just glanced at it and noticed traces of countless formations.
There is even a small world inside.
This is just like his Beidou Tianzong storage bag, there is something else inside.
Lu Yu dropped his consciousness into the chessboard, and everything in front of him suddenly became clear.
This is a boundless land of yellow sand, and the chess pieces in Lu Yu's hands are all soldiers wearing black armor.
On the opposite side, there were also roughly the same number of soldiers standing, also holding swords and standing upright.
Lu Yu's position was on the command platform of the black-armored soldiers, with several black-armored generals on both sides.
These soldiers were alive and well, but they were completely silent.
"I understand, if you want to win this flag, you must eat the opponent on this battlefield!" Lu Yu glanced at the surrounding formations, and a hint of understanding suddenly flashed in his eyes.