In the passage of time, I don't know the years, in the underground world of Yiyun's retreat, day and night can be distinguished by the pure yang sun above, but the seasons are exactly the same, because the vitality is abundant, and the flowers and plants here bloom all year round.

This was really a sacred land of bliss, looking at this scene of birds singing and flowers, thinking of Yi Yun's company, Ling Xi'er felt that even if he lived in this small world forever, it would be an extremely happy thing.

The only fly in the ointment is that she can hardly see Yi Yun idle.

Day after day, Yi Yun was always busy, for example, this time, when he entered the alchemy room, as soon as the door was closed, it was two years.

Since Ling Xue'er woke up, the evil god fire has undergone a qualitative change, especially Yi Yun's control over the evil god fire has reached the point where it is handy.

When Yi Yun first got the evil god fire, if he used it for alchemy, he could only control one wisp of flame, and later because of the rare herbs brought by Dong Shaoqing, Yi Yun refined a god-nourishing elixir and ate it, plus the accumulation of flame control skills, he could barely control two wisps of evil god fire.

And now, after Ling Xi'er woke up, this evil god fire had a spirit, and Ling Xi'er had great trust and dependence on Yi Yun, and reacted to the evil god fire, making it completely become Yi Yun's natal flame.

When Yi Yun used the Evil God Flame, he felt as if he had possessed the Evil God Flame for millions of years, and he could control ten wisps of flame alchemy at a time without feeling strained.

This made Yi Yun's alchemy and desolate heaven art advance by leaps and bounds, so in the past two years of retreat, Yi Yun tried some of the saint-level pills recorded in the medicine god classics.

Because there are so many types of pills and relics, and new pills are often developed, there is no hierarchy as far as low-grade pills are concerned.

But when it comes to the real top-level elixir, there is a conventional division. Saint-level pills and saint-level relics, those who can refine them are medicine saints.

The reason why the Heavenly Fire Holy Hand was proud was because there had been two Medicine Saints in the history of the Jiuding Dan Sect, and one of the Medicine Saints was the winner of the Extremely Cold Ice Flame Mother Flame.

These two medicine saints have laid the inheritance of the Jiuding Danzong and also created the glory of the Jiuding Danzong.

Now, Yi Yun has obtained a large number of heavenly and earthly treasures because of the collapse of the Ten Thousand Immortal Pavilion, among which there are dozens of materials, and they are treasures among treasures.

With these materials, coupled with the evolved evil god fire, and the help of amethyst, Yi Yun finally had the capital to try to refine a saint-grade elixir.

It's a pity that now he is still a little bit short of a fire, and he can only refine a quasi-saint-level elixir.

The difference of one word made Yi Yun extremely dissatisfied in his heart, so many days and places were favorable, but he couldn't break through this barrier.

In fact, even in the Candle Ding Heavenly Mansion, which is famous for refining medicine, the quasi-saint-level alchemist is already extremely noble, and this is already the level of the heads of the major sects and the great elders.

Even the Heavenly Fire Saint Hand was a big step away from the quasi-saint level.

"Whew-"

In the alchemy room, Yi Yun let out a sigh of relief, looking at the residue in the medicine furnace in front of him, he was a little distressed, although he had tried his best to avoid using the most precious dozens of medicinal materials to refine medicine, but some precious auxiliary medicines were refined, which still made Yi Yun feel pity.

Some of these auxiliary medicines were enough to make His Holiness blush, and only Yi Yun, who was as wealthy as him, could try his hand with medicinal materials of this level.

"No, if you try like this again, the medicinal materials will be wasted too much, my cultivation will be delayed, I am still too young, I have not accumulated enough, and it is too difficult to become a medicine saint in one step!"

Thinking like this, Yi Yun glanced at the floating Medicine God Ding in front of him, and suddenly his heart moved.

The Medicine God Ding is the best Dan furnace, a top Dan furnace, which is of great help to the success rate of alchemy, but unfortunately, this Medicine God Ding is incomplete!

The lack of the core array made the quality of the Medicine God Ding plummet.

"What if...... I can replenish the Medicine God Ding, maybe I can refine the Saint-level Pill. ”

Thinking of this, Yi Yun was a little moved.

Becoming a Medicine Saint, it would be completely different, he could try to refine the "Qianyuan Pill", "True Dragon Relic", "Taiyi Ruyi Pill" and other saint-level pills, so that his achievement as a Venerable would be just around the corner.

At that time, the Immortal Pavilion of All Things would be nothing in front of him, so why should he use the power of the Qin City Lord and the others, he would be destroyed casually by himself.

It's a pity that the grade of the Medicine God Ding is too high, and to make up for the Medicine God Ding, you must find the refining master, the Ancient Wonder Array, how easy is that?

More than a year has passed, and on this day, Yi Yun is finally out of the customs.

Ling Xi'er only saw Yi Yun after such a long time, and she missed it so much.

"Brother Yi, why have you been in retreat for so long, what have you done? Ling Xi'er was a little sticky to Yi Yun, she had already run over and grabbed Yi Yun's arm affectionately.

Yi Yun smiled and touched Ling Xue'er's little head, and didn't speak, just took out some bottles and cans.

The top-level heavenly and earthly treasures that had been scavenged from the Ten Thousand Things Immortal Pavilion before had all been transformed into pills in Yi Yun's hands.

Among them, there were nearly 100 quasi-saint-grade pills alone, and there were even more than 1,000 other pills of inferior quality.

Although Yi Yun did not have the ability to refine saint-grade pills, even so, Yi Yun did not save when he used these medicinal materials, and refined them all in one go.

The medicinal power is a little wasted, but it is still acceptable, after all, it is meant to be used when you get the treasure of heaven and earth, and you will find it again if you don't have it in the future, but if the time and potential are wasted, then you can't get it back, and now Yi Yun is improving his strength at all costs.

"That's a lot of pills!" Ling Xi'er said in surprise.

"Well, it's a pity that my Danshu is a little worse, and I haven't refined the best, but I can barely use it. ”

Yi Yun said casually, if his words were heard by other sects, he would be afraid that he would have the intention of crying.

Such a batch of pills is already more valuable than all the stocks of many powerful pills combined, even if they have the same heavenly and earthly treasures as Yi Yun, they still ask grandpa to tell grandma to let those medicine refining sects refining, but the ones who can really move, that is, the first-class people of the Heavenly Fire Holy Hand, the level of pills refined is far inferior to Yi Yun's.

Yi Yun selected more than a dozen Divine Soul Pills from all the pills, including the Void Divine Pill that was left over from the previous use, and handed them over to Ling Xi'er.

"Evil child, it's time for you to cultivate. ”

"Cultivation?" Ling Xue'er was a little confused when she heard this word, she hadn't cultivated for hundreds of millions of years since she was born.

"Well, the more you cultivate, the stronger your divine soul power will be, and the less likely your spirit body will be injured, moreover, your ontological evil god fire will also be more spiritual, and I will be more and more comfortable in controlling it, and I can also try to refine higher-grade pills. ”

Hearing Yi Yun say this, Ling Xi'er was stunned for a moment: "Can my cultivation help Brother Yi?"

"Yes, after you woke up, my ability to control the evil god's fire has multiplied several times. ”

"Well, then I'll cultivate. Ling Xi'er nodded heavily, her dark eyes as if they were glowing.