A dragon head and phoenix tail purple medallion with a complex structure, probably because of its combination with other divine seals, has hundreds of millions of different interpretations, and only a very few people can naturally and fluently recite the classics recorded with this divine seal.

The Ichthyosaurus Divine Medal is much simpler, and a Ichthyosaurus Divine Medal may only have three or five meanings, which is more suitable for daily writing and memorization.

To use a very inappropriate analogy, the dragon head and phoenix tail purple urn god chapter is the country's heavy weapon, like the nine tripods are high, but normal people usually don't need such tall things, and the fish dragon god chapter is a clay pot porcelain plate and other utensils, and the usual utensils are inseparable from them.

On the plaque, the two purple rising, simple and heavy fish and dragon god medals are marked with the word 'Dandian'.

If it is extended, the meaning contained in these two divine medals is also equivalent to that this is the 'Alchemy Hall', or the hall where the elixir is stored, or this is the place where a certain alchemy master teaches the Dan Dao on a daily basis.

What exactly is the meaning of these two divine seals here, you can only rely on Chu Tian to walk in by himself to find out.

The two metal golems strode towards the toppled gate of the Dan Palace, and they leaped into the air, crossed the threshold that was twenty or thirty zhang high, and stood on the threshold that was ten zhang wide.

After staying for a while, Chu Tian saw that the two metal puppets were safe, and he also flew up and landed lightly on the threshold.

In the huge Dan Hall, on the left are rows of bookshelves carved from transparent crystals. Rows of bookshelves with a height of 500 zhang are neatly arranged, and there is no trace of dust accumulated because of the baptism of time.

Standing here in Chutian, you can see rows of bookshelves as far as the eye can see, at least thousands of rows of bookshelves stand there quietly.

On the bookshelf, there are many large and small classics, scrolls, books, jade plates, jade books, and clusters of light shining with strange light.

Countless years passed, and a purple-red halo visible to the naked eye covered these bookshelves, emitting powerful fluctuations that made Chu Tian's heart tremble.

Obviously, this is an extremely powerful layer of defensive prohibition, specially designed to protect these bookshelves, to protect the tomes on them. It is precisely because of this powerful prohibition that countless years have passed, and these classics are still well preserved.

"Good girl! a lot of books!" Lord Rat subconsciously began to rub his two front paws, and an extremely sharp light flashed in his eyes: "Empty, empty, must be empty!" The ancestor of your Chu clan in Lingzhou said it well, the descendants of the Chu family, you should read more, there is a mountain of gold in the book, there is a silver sea in the book, and there are countless beauties in the book!"

Chu Tian glanced at the Rat Master quickly, he was very curious, what kind of wonderful person was the Chu family ancestor who saved the Rat Master back then, and he could actually say such a thing.

"Empty, I want to too, but it also depends on whether we have the ability!" Chu Tian took out a piece of Yan Yujing that he had picked up on the road, and gently threw it towards the nearest bookshelf.

'Snort', Yan Yujing was still more than ten zhang away from the bookshelf, and it inexplicably turned into a wisp of green smoke.

Chu Tian and Rat Ye gasped at the same time, Yan Yujing is certainly a fire attribute material, but it contains an extremely pure huge amount of heaven and earth spirit essence, and its own texture is extremely hard, ordinary Heaven Ascending Realm spirit weapons are difficult to damage in the slightest, and some special techniques must be used to smelt and forge.

Such a hard Yan Jade Crystal was turned into a wisp of green smoke by the defense and prohibition so easily, and Chu Tian didn't dare to think about how miserable it would be if he accidentally touched it.

"Doesn't it make sense!" The rat master stuffed his tail into his mouth and bit it hard, the beard on his face drooped down, and his face became very ugly: "Everyone is dead, and they still hold on to these treasures...... Scrooge or something, it's really hateful to the extreme!"

Chu Tian looked at those bookshelves for a while, shook his head, his eyes suddenly lit up, he saw that on the right side of the main hall, in a vast space, on the nine dragon heads and earth fire vents that stretched out from the ground, there were nine Dan furnaces with purple gas all over their bodies!

Compared to the Ziyang Furnace that Chu Tian is using now, which he bought from the Phantom Pavilion, the appearance of these nine Dan furnaces is also good, and the aura they emit is also good, at least a thousand times or ten thousand times that of the Ziyang Furnace!

The height of the Jiukou Dan furnace is three hundred zhang up and down, there are three legs below, the furnace body is round, the purple light of the whole body is shining as if translucent, there are three circular fire doors on the furnace body, and you can see the pure golden flame whistling and circling in the furnace body.

On the first Dan furnace, there are nine flying dragons circling, on the second Dan furnace, there are nine phoenixes dancing wildly, on the third Dan furnace, there are nine unicorns stepping on the mountain, and on the fourth Dan furnace, there are actually nine nine-tailed sky foxes worshipping the moon......

The patterns on the nine Dan furnaces are different, dragons, phoenixes, unicorns, and sky foxes are all the most noble and powerful true spirits in the legendary heaven and earth!

In the Dan furnace that was closest to Chutian, the Nine Dragons were entangled, through the circular fire gate, you could still see a dazzling light flickering in the golden flames. The colorful glow in these rays flickered, and occasionally the glow swirled, and at a glance, the round pills could be seen circling and dancing rapidly in the golden flames.

"Youdan!" the rat sucked sharply.

"The question is, after so many years, the Dan has not been refined into ashes by this flame, do you dare to eat it?" Chu Tian looked at the Dan pill looming in the furnace, also swallowed a mouthful of spit, and asked the rat master very entangledly: "You, do you dare to eat it?"

Whether it is in the Ziyin inheritance or in the Dan classics of the Taiyi Qingling Sect, the elixir that takes the longest time can only be released in three hundred and sixty years. No matter how good the elixir is, if you miss the opportunity to become a pill, all of them will be refined into ashes, or inexplicable erysipelas will be born out of thin air, in short, it will not be a good result.

And how long has this Tangram Heavenly Palace existed for three hundred and sixty years?

"It's hard to say!" The fluff that had just grown on the rat master's body stood up one by one, and he gritted his teeth and said with a fierce face: "The rat lord is just like this...... Find a way to take it out first, the rat master takes a bite gently, the rat master has a big life, and he will never die!

A wisp of sparkling saliva flowed from the corner of the Rat Master's mouth, and he, like Chu Tian, stared straight at the nine Dan furnaces and couldn't let go of his eyes.

It's just that Chu Tian is staring at the nine Dan furnaces themselves, while the rat master is staring at the pills in the Dan furnaces.

After a long time, Chu Tiancai sighed and looked at the middle of the main hall.

Obviously, this Dan Hall was originally the place where the owner made alchemy, reading, and lecturing, with a bookshelf on the left, a Dan furnace on the right, and a neat stack of thousands of smooth and moist futons made of cold jade in the middle.

At the front of these futons, a purple gas descended from the sky, enveloping a high platform.

There is a futon on the high platform, and there is a small bookcase in front of it, on which there is an incense burner, a jade chime, a ring ruler, and more than a dozen huge jade scrolls with a length of more than 20 zhang!

Chu Tian's eyes suddenly lit up, Dan Shu!

Moreover, there seems to be no prohibition on this high platform.