While Wu Gui was wracking his brain, trying to make out Lin Xiao, the latter was delighted to the brim. If Wu Gui were a woman, it would be highly likely Lin Xiao threw himself at Wu and kissed him violently.

Lin Xiao wouldn't give a glance at The Refining Divine Pithy Formulawithout Wu Gui's help. With just one look, Lin Xiao realized it was an invaluable treasure.

Now Lin Xiao was with nothing on him but the books made of jade slips. Those were the legacy of Dizun, widely-recognized treasures.

Nevertheless, Lin Xiao was not able to open any of these precious jade-slip books, which upset him to the fullest.

It was just now that Lin Xiao found that once he was done with the fifth-level cultivation of the Refining Devine Realm in accordance with the pithy formula, he would be able to open one of the jade-slip books.

That was the most inspiring find Lin Xiao had ever had.

The Refining Divine Pithy Formulawas nothing but the most modest basic cultivation method to Wu Gui, but it turned out to be a key to the jade-slip books.

Lin Xiao obtained the jade-slip books at the Forsaken Cemetery. Though he had no access to the content, a brief introduction from the owner cast some light upon what the books were about.

He picked one jade-slip book after a long time. He did some research about them and found that these jade slips were shrouded in various manners. And the ways to unlock the seals were all sorts of strange measures. Only one of them could be opened in a simple way.

There was only on cultivation method of the Refining Divine Realm recorded in it, entitled The Doctrines of Limbo.

The previous owner speculated that The Doctrines of Limboalready came into existence in the remote ages. However, no one had mastered it before the owner got hold of this jade-slip book. He had been seeking a suitable person to pass on The Doctrines of Limbo, but he failed at last after an age-long search.

In order to keep the book in decent condition, the previous owner even elaborately picked a place where immortals lived to establish a sect of his own. In this way, he gathered quite a few disciples. Nevertheless, albeit well-known for the prosperity of his sect, he remained short of the right one to whom he could pass on the cultivation methods.

Out of utter despair, he sealed The Doctrines of Limboin a jade-slip book. Leaving the key to it at the sect, he left for good with his jade-slip books.

Leafing through the pages of The Refining Divine Pithy Formula, Lin Xiao forthwith realized it was the key to that jade-slip book. Hence he could barely take any notice of the other picks.

Though Lin Xiao was already absorbed by the pithy formula, Wu Gui went on with his earnest persuasion.

"Brother Lin, this one won't do it for you. Don't fall for it, it's good in name only. Please take a look at the other two books. Those two are actually the best cultivation methods of the Refining Divine Realm, one of which was once a textbook for the patriarch and the three chief seniors. It's a shame that my poor endowments won't allow me to use these two. But you're much superior to me in talent. Being remarkably intelligent, I'm sure you'll master these two methods. Please pick them instead." Wu Gui exerted himself to convince Lin Xiao.

The Refining Divine Pithy Formulathe key to a jade-slip book was nothing but a name in Wu Gui's eyes. His sentiment appeared indescribably queer to Lin Xiao.