Yang Xian, who had experienced this catastrophe, now only felt refreshed, the tenacity of the immortal veins had become 3 times stronger, the aura flow channel had nearly doubled, and the body meridians were also 3 times stronger than before, his physical fitness had improved significantly, and his body was full of strength. Yang Xian subconsciously operated the aura in the dantian, this aura ran rapidly in the three immortal veins and dantian like a wild horse, compared with before, the current immortal veins are as wide as the Kangzhuang Avenue, the three immortal veins, Tiantong immortal veins, Tianyin immortal veins, and Tiancheng immortal veins are completely opened, forming a small cycle with the dantian. The aura runs as you like, and unconsciously, the speed of the sword yuan's true solution is constantly accelerating, and the aura is restless in the immortal veins.

In the case of Yang Xian's high-speed operation of "Sword Yuan True Solution", the aura rose and shrank, and a sense of mystery and mystery made Yang Xian grasp it, and Yang Xian immediately entered the state of cultivation, "Xuanzhi and Xuan, it is for Tianxuan, and the sword qi is out of ......", Yang Xian immediately ran the sword Yuan Zhen to solve the four-layer exercise of refining qi, and the fourth immortal vein, Tianxuan Immortal Vein, Xuanzhi and Xuanzhi were opened, which means that Yang Xian broke through to the fourth layer of qi refining, and the bottleneck in the middle stage of qi refining rushed through, and he naturally entered the middle stage of qi refining. Tianxuan immortal vein, Xuanzhi and Xuan, this is a hurdle, many monks are stuck in the bottleneck, unable to comprehend such an artistic conception.

Open the Tianxuan Immortal Vein and enter the fourth layer of Qi refining, the aura in the body increases by 5 times compared to the third layer of Qi refining, the aura in the body increases, the changes are huge, and the qi gathers into a sword, and the sword qi is separated from the body is proof, the sword qi can be emitted, and the combat power of the immortal cultivator has increased dramatically.

Entering the fourth layer of qi refining, Yang Xian was overjoyed, because it had only been more than a year since Yang Xian broke through the third layer of qi refining, and now he had directly entered the fourth layer of qi refining, this luck was simply amazing, because Yang Xian estimated that with his cultivation speed, it would take at least three to five years to accumulate enough aura to impact the bottleneck of the middle stage of qi refining, and it was still this bottleneck that was not stuck, otherwise it would take more time. After his mind turned, Yang Xian immediately found that the clothes on his body had been completely solidified by black stains, and there was a foul smell, and the entire place where he was stored was already smelly, Yang Xian immediately took off his clothes, used his spiritual power to perform a small cloud and rain technique, took a cold shower, and then changed into clean clothes. Because of the lack of water in Yang Xian's four spirit roots and five elements, this little cloud and rain spell was a little weaker, but fortunately, it was enough to take a bath.

For Yang Xian, he was only an outer disciple with the lowest status in the Spirit Sword Sect, and he was also a miscellaneous spirit root qualification of the four spirit roots, and his immortal cultivation qualification was low. Because as an immortal cultivator, the spiritual root is a necessary condition for cultivating immortals, without the spiritual root, you can't guide the spiritual energy of heaven and earth into the body, and open up the immortal veins in the body, you can't practice the qi refining and cultivating immortal exercises, you can only become a mortal or take the path of mortal body refining.

Normally, spiritual roots are divided into the five elements of metal, wood, water, fire, and earth, in addition to the alien spiritual roots such as ice, wind, thunder, yin, and yang. The best spiritual root is a single spiritual root, this spiritual root is the heavenly spiritual root, known as the darling of the sky, this single spiritual root qualification is easy to feel the corresponding heaven and earth aura, and because it only absorbs one attribute spiritual energy into the body refining and absorption, the speed is fast, the purity of the spiritual energy is extremely high, and it is like a fish in water to open up the immortal veins in the body and break through the bottleneck. Although the cultivation of the Heavenly Spirit Root has an advantage, the fighting method is only good at a certain kind of Spirit Root Attribute Spells, and the other attribute spells are extremely weak, this is because the cultivation of other spiritual root spells that the Immortal Cultivator does not have is easy to be greatly rejected by the single Spiritual Root attribute, but the Heavenly Spirit Root Immortal Cultivator practices the spell corresponding to the Spirit Root because of the high purity of the spiritual energy, it is three points better than that of ordinary Immortal Cultivators, which can be regarded as a loss and a gain! This kind of Heavenly Spirit Root qualification is not encountered for thousands of years.

Next is the two kinds of spiritual roots, divided into associated spiritual roots and non-associated spiritual roots, the five elements are mutually reinforcing, and the spiritual roots such as gold and water, earth and gold are associated spiritual roots, if it is an associated spiritual root, then the cultivation will be smoother, if it is a non-associated spiritual root, it is not much different, and the focus is different. If it is the opposing spiritual root of gold and wood, water and fire, it is necessary to have the dominant biased five elements of cultivation exercises, such as the golden wood spiritual root is mainly gold or the water and fire spiritual root is mainly fire, and inhibits the absorption and refining of the opposing wood spiritual energy or water spiritual energy, although it is the opposite two spiritual roots, but it only perceives the two kinds of heaven and earth spiritual qi, absorbs it into the body to refine and absorb, and the cultivation speed is also very fast, and it is easier to open up the immortal vein.

And then there are the three spiritual roots, this kind of spiritual root is relatively general, as long as it takes time, it can still perceive the spiritual energy of heaven and earth to open up the immortal veins, which is neither very bad nor very good, and the cultivation speed is average, but the three spiritual roots are the foundation of a sect, so that there are often more spiritual roots, such spiritual roots are of greater cultivation value, as for the remaining four spiritual roots and five spiritual roots are the most common, because the spiritual roots are mixed, the spiritual energy that needs to be perceived is mixed, and the slower the speed of absorbing spiritual energy, The longer it takes to open up the immortal vein, the slower the cultivation speed.

If you are a mortal, if you want to cultivate into an immortal, you can't open up the immortal veins, you can only take the path of refining the body, use the body refining exercises to absorb the aura of heaven and earth or nourish yourself with things containing aura, improve your physical fitness, and use the aura to gradually open up the meridians of the whole body and improve the potential of the body. Refining the body is extremely difficult and cumbersome, especially when it comes to breaking through the bottleneck of the Great Realm, and it will require more resources.

The resources invested by the body cultivators can be said to be astronomical, and the low-level mortal body cultivators can still do their best, and the cultivation of high-level mortal body cultivators without spiritual roots may not be able to do anything about the legendary immortals, because it is not in line with the way of heaven, but I heard that there are also heaven and earth treasures that are born after tomorrow with spiritual roots, I don't know if it is a legend or it does exist.

For mortals with spiritual roots, theoretically, no matter what kind of spiritual root qualifications they have, they can open up the immortal veins and cultivate into immortals. Cultivating immortals, cultivating immortals, if you have a spiritual root, you will have an immortal vein, and you can cultivate into an immortal, and you can also become an immortal if you cultivate spirit beasts, spirits, spirits, ghosts, etc., but theoretically, the cultivation speed of a good spiritual root qualification is fast, and it can be cultivated in a few years and decades, and the resources consumed in each cultivation stage and bottleneck are less. The cultivation speed of the poor spiritual root qualification is slow, and it cannot be cultivated for decades and hundreds of years, it takes too long and consumes a lot of resources, even if the life span of an immortal cultivator is longer than that of ordinary mortals, it is not enough.

Generally speaking, the lifespan of an immortal cultivator in the Qi refining period is about 120 years, the foundation building period is about 240 years, the Jindan period will be about 800 years, and the overhaul of the Yuan Infant period will be about 1600 years.

The Qi refining period is divided into ten layers, each layer needs to open up an immortal vein, 1-3 layers are the early stage of Qi refining, you need to open up the Tiantong Immortal Vein, Tianyin Immortal Vein, Tiancheng Immortal Vein, 4-6 layers are the middle stage of Qi refining, you need to open up the Tianxuan Immortal Vein, Tianyin Immortal Vein, Tianyang Immortal Vein, 7-9 layers are the late stage of Qi refining, you need to open up the Tianguang Immortal Vein, Tianxuan Immortal Vein, Tiandu Immortal Vein, 10 layers are the Great Perfection, also called half-step foundation building, you need to open up the last Tianyun Immortal Vein. After the foundation is built, it is divided into the early stage, the middle stage, the late stage, and the Great Perfection (the Great Perfection is also called the half-step Jindan, and the Jindan period is called the half-step Yuanying), and the breakthrough of each stage will extend the overall life span by one-tenth. For example, the lifespan of the Qi refining period is about 120 years, the mid-stage breakthrough will be extended by 12 years, to 132 years, and the late breakthrough will be 144 years, the Great Perfection breakthrough is generally included in the later realm, and the life span of the Great Perfection Realm breakthrough will not increase.

Generally speaking, the cultivation and selection of exercises for immortal cultivators will be biased towards one of their own spiritual root attributes, so in order to give full play to their advantages and speed up their cultivation, almost every immortal cultivator will choose this way, and mortals who become immortals will generally choose multi-attribute or even non-attribute body refining exercises, so as to balance themselves and maximize the use of resources containing various attributes of aura. In most cases, because the end point of mortal immortal cultivation is basically the initial limit of the first-order body refining, that is, the third level of body refining. Generally speaking, the third layer of body refining is comparable to the third layer of qi refining of monks, but the combat effectiveness of body refiners of the same level is far greater than that of third-layer qi refining monks, because the physical fitness of the battle during the qi refining period is extremely important.

Mortal cultivation because there is no spiritual root as a medium, the immortal can not rely on the spiritual root to absorb the spiritual energy of heaven and earth, can only rely on the spiritual resources of the outside world to supplement and grow, theoretically speaking, the third layer of refining is the limit that mortals can reach, if you want to break through, it is against the sky, the difficulty of breaking through the bottleneck is extraordinary, ten times more difficult than a hundred times or even a thousand times that of an immortal cultivator with a spiritual root.

In the early stage of qi refining, the Qi refining cultivator is actually cutting the marrow of the body's muscles and opening up the immortal veins. It's just that mortal cultivation is not called the I Ching marrow, but the refining of the body into immortals, and the gap is so big that it cannot be calculated. However, all immortal cultivators with spiritual roots can open up the immortal veins through exercise cultivation and enter the qi refining period, because the first immortal vein is called the Tiantong immortal vein, which is the immortal vein carried by the person with the spiritual root, so every mortal with a spiritual root can cultivate immortals, and the subsequent cultivation of immortal cultivators needs to use spiritual energy to continuously open up other immortal veins, and the cultivation speed of different spiritual root qualifications to open up immortal veins will be widened.

Yang Xian's four spirit root qualifications, he started cultivating at the age of eight, Yang Xian is now 16 years old, and it has been 8 years so far, and he is still extremely lucky and hardworking, and he is willing to spend the spirit stone, plus this life and death adventure breakthrough, he can enter the middle stage of qi refining.

There is a spiritual root mortal who cultivates the first step of immortality, cultivates the exercises to introduct the qi, senses the Tiantong immortal vein, leads the spiritual qi into the immortal vein, and officially begins the cultivation of the Tiantong immortal vein. Because of Yang Xian's four spiritual root qualifications, the induction of aura is extremely weak, Yang Xian led the aura into the opening of the Tiantong immortal vein and successfully entered the first layer of qi refining, and after opening the immortal vein, he introduced the spiritual qi into the body and began the cultivation of the first layer of qi refining, and slowly opened up the Tiantong immortal vein until it was completely opened, and it took three years to complete the cultivation of this stage, and then hit the second layer of qi refining to successfully open the Tianyin immortal vein into the second layer of qi refining, and then lead the aura to completely open the second immortal vein Tianyin immortal vein, and the time spent on the cultivation of the second layer of qi refining is about the same as that of the first layer of qi refining, It also took more than three years to continue to impact the third layer of Qi refining, and everything went well, and the third immortal vein, Tiancheng Immortal Vein, entered the third layer of Qi refining, and began to open up the cultivation of Tiancheng Immortal Vein. Before this sect mission, Yang Xian's third immortal vein, Tiancheng Immortal Vein, took more than a year to open up his cultivation, and it was still in its infancy, but this kind of cultivation speed was already the best among the Miscellaneous Spirit Root cultivators, and it was all supported by Yang Xian's uninterrupted completion of the sect's tasks and resources in the past 8 years.

After Yang Xian opened up the Tiancheng meridian, according to the cultivation progress, if he didn't encounter a bottleneck, he originally expected that it would take at least 5 years to open the Tianxuan Immortal Vein and break through the middle stage of Qi refining, but he didn't expect that after this life-and-death battle with the Yin Wind Snake, it would take more than 1 year to open the Tianxuan Immortal Vein and enter the fourth layer of Qi refining, which was really a great luck. Because once the bottleneck in the middle stage of Qi refining is broken, then entering the fifth layer of Qi refining, the sixth layer is the process of continuous accumulation of spiritual energy, as long as you are willing to spend time and resources, it is a matter of course, because as long as the accumulation is enough, then it will definitely be achieved, in fact, one of the important factors that limit the improvement of the cultivation of immortal cultivators is the breakthrough of the bottleneck, so there is no bottleneck restriction of the Heavenly Spirit Root is very favored, there is a sentence that slips away: "Cultivating immortals can succeed, but it is not in the bottleneck", which can be seen in general.

The biggest difference between the middle stage of refining qi and the early stage of refining qi is that after the middle stage of refining qi, the sword qi can be released, and the divine thought of the imperial object, the early stage of refining the qi of the divine thought is 1 zhang, and the body can be viewed internally, even if it is promoted to the third layer of qi refining, the divine thought is only 2 zhang, and it cannot meet the conditions of the divine thought of the imperial object, once it enters the middle stage of qi refining, the divine thought breaks through 5 zhang, and this distance can be used to drive away the attack, but it is only a very short-term exorcism, and the practicality is low in the battle, it is just a hammer deal. However, if you break through to the late stage of Qi refining, the Divine Thoughts can reach more than 10 zhang, and the repellent attack is like a fish in water, and the amount of Divine Thoughts and Spiritual Qi in the body that increases dramatically in the later stage of Qi refining is completely enough for immortal cultivators to carry out exorcism attacks for a long time, and at the same time, they can also perform sword flight for a short time, once they enter the late stage of Qi refining, the comprehensive strength of immortal cultivators has undergone a huge change. However, the bottleneck in the late stage of Qi refining also made the immortal cultivators in the middle stage of Qi refining miserable.

Having said that, Yang Xian, who had broken through to the fourth layer of Qi refining, was now in an extremely good mood, and slowly began to examine his current situation, and after more than 8 years of cultivation, he had entered the middle stage of Qi refining, and there was a great element of luck in it. Yang Xian understands that his qualifications are very poor, he must not be complacent and complacent, only by taking every step steadily, can he move forward in a higher direction, so Yang Xian took out a yellow, orange and orange pill from the storage bag, this is Bigu Dan, which is made of a mixture of spirit valley and elixir, eating one can ensure that half a month does not eat or drink, so mortals always say that immortals drink wind and dew, this is just not understanding the actual situation of immortal cultivators. After eating the Bigu Pill, Yang Xian suppressed the joy in his heart and began to cultivate steadily.

Time was like flowing water, and after three days of continuous cultivation, Yang Xian had finally stabilized the cultivation that had just broken through. After this breakthrough, the whole person was reborn, and his cultivation was stable in the middle of Qi refining, and the imperial art was already in his understanding, and the black iron sword issued by the sect finally had a place to use, and the black iron sword was the most common inferior magic weapon issued by the sect to the outer disciples, and it could be regarded as a benefit for the beginner disciples.

Immortal cultivators are very simple in cultivating ordinary and popular imperial arts, and they are already proficient in just two hours, and the black iron sword in Yang Xian's hand can come within 5 zhang of their hearts, and if they are far away, they can't control it well. After mastering the art of imperial objects, Yang Xian sorted out his storage bag again, a little more than a cubic space in the bag only has the jade box of the eight-leaf dragon pattern spirit grass and some empty jade bottles, only one jade bottle still has stock, that is, the jade bottle containing Bigu Dan, a bottle of ten, this time I ate one plus the previous one, there are still 6 left, if you can eat Bigu Dan can work hard, then the jade bottle should be all empty. On the side of the jade bottle, there were several sets of gray outer disciples changing clothes, as well as a few forbidden spirit talismans, dust amulets and other useless talismans, and finally there was a black iron sword lying quietly in a corner. This is all Yang Xian's net worth.

In order to escape the pursuit of the Yin Wind Snake, all the talismans and pills that could be used have been exhausted, and the only remaining spirit stones have also been exhausted. Among them, the spirit stone is the basic currency, which can be used for transactions between immortal cultivators. Spirit stones are immortal cultivation resources, and they are the lifelong pursuit of every immortal cultivator, and Yang Xian is no exception. Because Yang Xian took over the task of the sect, in order to ensure safety, almost all the spirit stones were used to buy the rare life-saving talisman Xiao Tu Escape, which was worth 22 lower-grade spirit stones, which was enough to catch up with the income of the outer disciples for two years, and the outer disciples of the Spirit Sword Sect could receive a spirit stone for a month. In order to protect his own life and the mission of the sect this time, Yang Xian can be said to have made a bloody investment.