Yuntian still chose the small courtyard prepared by Zhao Mengliang and Zhao Mengshan brothers, because it is located in the core area of the city of Star City, which not only has a large population flow, but also is convenient to enter and exit freely.

Of course, because it is located in the core area, it is inevitable that there will be some noise when there are many people coming and going, but as a formation mage, Yun Tian will naturally not be helpless, he has arranged two layers of enchantments around the courtyard to protect the entire courtyard, so that the interference from the outside will not affect him.

When everything was ready, Yun Tian began to set up the Dan Room, because this time it was a higher grade Pill to be refined, so the layout of the Dan Room was more exquisite. From the Danshi's point of view, the mastery of these skills is the key to refining the finished Dan, and the refining of a furnace of Dan can meet various requirements, and it is also a very good test of the alchemy skills of the Dan Master.

The grades of alchemists are mainly at the following levels above the five-star, among which the five-star alchemists can refine the yellow-level fourth-order to sixth-order pills, the six-star alchemists can refine the yellow-level seventh-order to ninth-order pills, the seven-star alchemists can refine the Xuan-level first-order to third-order pills, the eight-star alchemists can refine the Xuan-level fourth-order to sixth-order pills, and the higher-level nine-star alchemists can refine the Xuan-level seventh-order to ninth-order pills, which is already beyond the Xuanzun realm.

Now Yun Tian's goal is a seven-star alchemist, so his main plan is to upgrade from the fourth-order to sixth-order pills of the yellow level to the seventh-ninth order pills of the yellow level, and one step further is to break through to the level of the Xuan-level pills.

With this plan, Yuntian sorted out the Dan furnace and the corresponding alchemy equipment, and then began the refining process of the elixir.

The previous mastery of the yellow-level six-rank pill Yuntian was already very high, and the quality of the yellow-level six-grade pill he refined was very high, which was comparable to the quality of the pill above the yellow-level seventh, and it was also because of this level that Yuntian's pill refining did not need to worry too much, on the contrary, the pill produced in his hand was almost equal to the standard in the same type of pill.

Taking the highest-grade pill that Yuntian could refine, his best thing was the yellow-level six-grade Tianxuan Pill, which was divided into one turn, three turns, and six turns, which were used in the middle and late stages of the Tianxuan realm, and the higher its grade, the better the quality of the pill refined.

There was not much time for Yuntian to refine the pill for a while, in order to ensure the quality of the pill refining, Yuntian did not hesitate to spend his energy to start refining the yellow-level six-grade pill Tianxuan Pill again, he wanted to refine the Tianxuan Pill after the refining of the Tianxuan Pill reached an extremely high level of proficiency, and then strive to refine a better pill, so as to further improve the level of alchemy.

The quality of the pill is divided into ordinary quality, medium quality, top grade and best quality. Among them, the quality refers to the good quality of the pill, the middle grade refers to the good quality of the pill, the top grade refers to the excellent quality, no shortcomings, outstanding efficacy of the pill, and the best pill, the pill is often accompanied by vision, there is collateral effect, the best pill is divided into several grades, including Danwen, Danyun, Danling, there are Danling pills called the king of Dan, also known as ****. These contents had already been understood by Yun Tian in the Great Luo Realm Continent before, but now he needed to understand them further, so that he could have the opportunity to refine the high-quality pills in an orderly manner.

In the world of martial arts, the quality of the pill is different, and the value it has is naturally different, especially the pill above the top grade, the shelf life is long, and the pill already has spirituality at the stage of the best pill, and it can even swallow the true qi by itself, if it is placed in a place where the true qi is abundant, this pill will nourish itself and continuously improve the quality. And the elixir with the Dan Ling is very likely to become a living creature in the end, and its effect can be imagined.

Yun Tian refined a large number of sixth-grade yellow-grade pills in one go, and after a period of high-intensity refining, Yun Tian felt that the pills in his hands were becoming more and more refined, and his grasp of the pills was further improved.

At this time, Yun Tiancai carefully put away the refined pills, and then put out some higher-quality herbs in the pill room.

"Next, it's time to refine high-grade pills, above the sixth grade, first refine the seven-grade pills!" Yun Tian's mind flashed such a thought.

Yellow Rank Seven-Rank Pill, compared with the Yellow Rank Six-Rank Pill, the gap during the period is not a simple sentence or two sentences that can be made clear, it can be said that once it enters the level of the Yellow Rank Seven-Rank Pill, it is equivalent to the Yellow Rank High-grade Pill, which is also a big watershed in the Yellow Rank Pill.

In the past, most of the pills that Yuntian could master were pills such as refining the Pregnant Spirit Pill, Soul Shaping Pill, refining the Soul Shaping Pill and Tianxuan Pill, although the grade was lower, it was better than the refined Cheng Dan with high quality and good quality, so under the premise that the effect of the refined pill was no worse than that of the general higher-level pills.

Before, in the Daluo Realm Continent, Yun Tian had a preference, the pills he refined, often had a mark on them, marked with the word "cloud", Yun Tian's idea was to establish his own brand, so that everyone knew who this high-quality pill came from, but Yun Tian didn't know that in the near future, this kind of pill marked with the word "cloud" was called "Yun" Dan, known as the existence of the top quality in the pill.

And now that Yun Tian has come to the Xuanjie Continent, he still has this kind of consideration, and the pills he plans to refine are all marked with such a mark, so that his alchemy can form a brand.

In the arranged enchantment, Yun Tian tried the pill over and over again, although there were failures again and again, but in the process of failure, there was also unexpected success, in today's refining process, Yun Tian found that his pill refining process had changed a lot, he became more and more proficient in the refining of the seventh-order pill, and he became more and more sure, unconsciously, the pill that Yun Tian had tried before had been completed with quality and quantity.

When a furnace of pills suddenly made a "bang" sound, a strong fragrance of pills diffused around the pill room.

"Yellow-grade seventh-rank elixir, this time it should be successful, but I don't know what kind of level this furnace pill can reach, and what its quality will be, will it refine a high-quality seventh-order elixir?" Yun Tian's heart was full of questions.

Yun Tian paid very careful attention to the pills in the Dan Furnace, that kind of caution that felt abnormal, at this time the Dan Furnace was not opened, and the pills in it could only be controlled by spiritual sense, which also made Yun Tian have to be highly careful, in case of an accident, resulting in no return.