The old man didn't speak, nor did he make any special moves, he just looked at Fang Tiannan like this, as if he wanted to deeply imprint Fang Tiannan's image into his mind.

Then, just when Fang Tiannan felt uncomfortable, the image of the old man gradually disappeared into the void, and then condensed into countless rays of essence light, shooting at all the objects displayed in the space.

And in this space, the more than ten Dan furnaces that were originally placed, after receiving these lights, also floated up instantly, and quickly fused with each other, and finally only a cyan alchemy furnace remained. If you look at it just from the surface, it is the same as the alchemy furnace that Fang Tiannan saw when he first entered the Inheritance Cave Heaven and was in the room full of futons.

Thinking of the futon, Fang Tiannan's gaze quickly focused on the golden futon in the space.

After the alchemy furnace in the space changed, this golden futon also began to flash with yellow light. Of course, there is only one futon, and there is no need to merge again. To Fang Tiannan's surprise, the final form of this futon turned out to be condensed into a golden point of light.

In addition, the books and pill bottles on the four shelves, together with the bookshelves, are impacted, fused, and condensed with each other to form a thick book, with the four big characters "Alchemy Sutra" written on the cover.

At the same time, the light emitted by the six-pointed star pattern on the ground seemed to have dimmed a lot at this moment. The metal plaque in the center of the pattern jumped out of the hole at this time. It's just that the metal brand at this time gives Fang Tiannan a new look.

Not only from the surface, there are brand new changes, the original traces of simplicity have completely disappeared, completely glowing with a metallic luster, extraordinarily bright, even from the perspective of the majesty it invisibly exudes, it is enough to make Fang Tiannan feel stunned.

Is this still the metal brand I picked up before?

On the surface of the metal brand, those brilliance are not mentioned for the time being, just the feeling that this metal brand gives Fang Tiannan is not ordinary. It seems that this metal brand has its own life, just by looking at it, Fang Tiannan's mind is full of vast, moving, profound and many other emotions.

It's just that the metal brand just appeared in mid-air out of thin air, and it didn't return to Fang Tiannan's body, and next to the metal brand, there were two blue lights visible to the naked eye, circling around it, looking like they wanted to enter, but couldn't find their way.

Fang Tiannan couldn't help but smile bitterly in his heart, these two blue lights, I can't say, they are the two strange energies that were originally hidden in the metal brand......

Almost at the same time, whether it was the metal brand, the two strange energies that rotated around it, or the new pill furnace, golden light spots, and the book "Alchemy True Scripture" that appeared in this space, they all flew into Fang Tiannan's body.

Fang Tiannan immediately felt that his body seemed to have been transformed into a huge container, and any kind of thing could enter freely.

Even so, these things were still different when they chose to enter Fang Tiannan's body. It was like a golden point of light, as well as the "Alchemy True Scripture", and the location chosen to enter was between the eyes on Fang Tiannan's head. The metal brand, as well as the two energies surrounding the metal brand, were different from the original, they did not enter the dantian under Fang Tiannan's umbilicus, but did not enter Fang Tiannan's chest.

As for the cyan alchemy furnace, if Fang Tiannan was not mistaken, it should have entered the metal brand first, and then it entered Fang Tiannan's body together with the metal brand.

Just before Fang Tiannan had time to carefully examine all these changes, information suddenly flashed in his mind, which was the golden point of light, the manifestation of Fang Tiannan's brain after fusing with his thinking.

Suddenly, Fang Tiannan understood that this golden point of light was the inheritance information left by the old man who inherited the cave sky.

With this information, it was constantly understood by Fang Tiannan, and in general, Fang Tiannan was also clear about what was going on with this exploration of the inheritance cave.

The figure of the old man who appeared in the void was undoubtedly the master who left the inheritance. What exactly is the name and who is it, there is still no specific introduction in the golden light spot. However, Fang Tiannan knew that he was an alchemist at least 10,000 years ago. The many tests in the inheritance cave are nothing more than to follow the old man's wishes, to examine the mentality, strength, and so on of the latecomers who are lucky enough to enter this place.

To put it bluntly, this old man just wants to find an inheritor.

Therefore, after anyone enters the Inheritance Cave, there is no danger to their lives. As for whether you can get the final inheritance, it depends on luck.

Originally, Fang Tiannan was still wondering why a martial artist with low strength with yang attribute could eliminate a genius like Gu Yanran, so as to be recognized by the old man. With the information contained in the golden light spot, constantly fused with Fang Tiannan's thinking, Fang Tiannan also found the biggest factor, that is, the metal brand that Fang Tiannan had obtained before.

In the words of the old man, this is a "boundary card". If it weren't for it, the entire Inheritance Cave Heaven might not exist. And the boundary card has always been near the entrance of the inheritance cave, but it has been sealed, even if someone accidentally picks it up, it will not touch the opening of the inheritance cave, unless it is, the seal on the boundary card is lifted.

Fang Tiannan subconsciously thought of the detergent he had exchanged from the dream shopkeeper. Of course, there is no way for such a bottle of "three-no-product" detent to successfully lift the seal of the boundary card. It can only be said that when the old man carved the seal, he set that the blood of the dragon clan or the phoenix was needed to initially lift the seal.

At the same time, Fang Tiannan also knew that when he entered the entrance of the Inheritance Cave Heaven, the two demon beasts in the void he saw were the Jiaolong who was about to evolve into a dragon, and Qingluan who was about to evolve into a phoenix.

It can be said that it is the energy contained in the Boundary Plate, Jiaolong, and Qingluan that has maintained all the operations in the inheritance cave for tens of thousands of years......

The origin of the boundary card, the old man who left the inheritance, is not very clear, and can only roughly speculate that it should be a piece of metal from the void. In this way, Fang Tiannan has always called it a "metal brand", but there is nothing wrong with it. And what this boundary card can integrate into Fang Tiannan's body without hindrance, this old man is also unclear. On the contrary, he also explained that it can only be used normally after refining the boundary cards.

And the role of the boundary card, in addition to being used by this old man to create the inheritance cave and maintain the operation of the inheritance cave, also has the biggest function, that is, it can be used to collect things.

Fang Tiannan's mind flashed in an instant, and the cyan pill furnace first entered the boundary card, and then followed the boundary card to enter the scene in his body.

If none of the people who entered the Inheritance Cave had obtained the Boundary Cards, the old man would have to look for the best of them to pass on his abilities.

Specifically, it is to obtain the "Alchemy Sutra" left by this old man.

Thinking of this, Fang Tiannan's attention inevitably began to focus on the "Alchemy True Scripture" in his mind. On the cover, there are only four big characters. And from the information left by the old man, Fang Tiannan also roughly understood that this was a book that recorded the alchemy of the old man's life.

Of course, a great alchemist is not just able to refine pills, for example, in the cultivation of martial arts, the old man simply demonstrated it through the inheritance of humanoid puppets, boulder warriors, and so on. In addition, how to refine these puppets and boulder warriors can also be regarded as the old man's unique skills.

It's just that these skills and martial arts, the old man has not recorded them in this "Alchemy Sutra".

Even with it, the origin of the dragon and Qingluan that the old man owned before his death did not explain. It's just that Fang Tiannan is not disappointed by this. After all, if Fang Tiannan's guess was correct, the two energies conjured up by Jiaolong and Qingluan were constantly running around the boundary card at this time.

These two energies are special and powerful, and Fang Tiannan has already preliminarily comprehended them.

Since he was encountered by Fang Tiannan, sooner or later, Fang Tiannan would figure out the specific effects of these two energies, and how to use them.