Xiao Daochen got up early and finished bathing, dressed up, and walked to his father's secret room. The secret room is located in his own backyard, which was built by his father himself, and very few people know about it, and with his father's prestige, no one dares to break into the backyard and forcibly search.

Today is the second day of washing the essence and cutting the marrow, there is a saying in the ancient book, cultivation is divided into six realms of practicing qi, building a foundation, knotting, yuan infant, infant change, and transforming gods, in the words of my father, it is a process of accumulation of quantitative change to qualitative change, and then quantitative change and then qualitative change;

When I entered the secret room, I saw my father sitting next to a furnace, wearing a purple robe, but it was rare to see, and it seemed that my father also attached great importance to this washing of essence. Take a closer look at the furnace ding, but it is somewhat different from the ordinary alchemy furnace ding, the lower plate is slightly thinner, the upper plate is slightly longer, the top is a bit like a bottle mouth, and it looks like a thin furnace ding on the whole.

Seeing Xiao Daochen's doubts, his father explained: "This is a branch of the furnace ding, you can call it a medicine tripod, the cost is almost the same as the pill tripod, but it is not suitable for alchemy, so it is rare on the market, the main role is to refine the top medicinal materials, compared to the pill tripod The loss of medicinal materials is less, often only the top alchemists have, I have completed the preparation work yesterday, you adjust, I will explain it to you." “

Xiao Daochen sat down and adjusted his breathing evenly.

Zhang Tianxin said slowly: "When you see more, you will know that nine is a special number, and most of the Heavenly Extreme Exercises are divided into nine layers, is it because these exercises happen to be nine layers?

"It has been said since ancient times that nine is the number of poles, and there is no empirical evidence, only corroboration, but as the rumors go by for a long time, people take it as they are true. The Qi training period is also divided into nine layers, one to nine layers can be said to be artificially divided, the main thing is to swallow the aura of heaven and earth into the body, a little bit of accumulation, halfway through the use of aura step by step to change the physique, beyond the mortal process, to the ninth layer of the accumulated aura just filled the entire dantian, at this time it has reached saturation, you can try to impact the foundation, compress and condense the aura into a liquid state, and then carry out new accumulation after qualitative change."

"Since the nine layers of qi training are artificially divided, there are naturally people in later generations who want to break through the limit and reach the tenth layer of qi training, so when the dantian is full of spiritual energy, they do not compress the liquid but forcibly accumulate it, trying to expand the size of the dantian, but the first people who started to try it are all lost because of the broken dantian and become mortals. ”

"Since then, very few people have tried to expand the dantian and cultivate, but cultivation is a trip against the sky, how can it be limited by the number of nine levels, that is not the beginning of the fall, so after practicing the ninth layer of qi, the monks who are reluctant to build a foundation or cannot build a foundation, and continue to accumulate experience and practice the exercises are called the tenth layer of qi training"

"However, with the development of the cultivation realm, people's ambitions are also constantly expanding, in order to be above everyone, the monks who have tried to break through the tenth layer of qi training have never been cut off for millions of years, and all kinds of elixirs have been developed more and more, and finally someone has created a precedent, with the help of the elders, the elixir is used to forcibly expand the dantian, although the dantian is seriously damaged, but with the help of the elixir and the elders, it can be slowly recovered, and this situation of breaking through the ten layers of qi training is called the eleventh layer of qi training, and its combat power can basically crush the qi training perfect monk”。

"Later, with more and more experiments, people found that the dantian expanded by a quarter at most, and it was difficult to advance an inch, otherwise it would definitely die."

"But if there is desire, there is motivation, although the dantian can no longer be expanded, people think of the body, the twelve meridians and the eight meridians of the strange meridians, anyway, the so-called qi training period is just to increase the accumulation of spiritual energy, and then compress the process of building the foundation, the more you accumulate, the more liquid you will have when building the foundation, and it will be stronger than the cultivation of the same level, and the cultivation path behind it will be smoother. So, I kept trying to find ways to use the physical body and meridian reservoir aura."

"Then people found that the way the body stores the aura is not good, although the body can hold the aura, but it will soon dissipate, and the only benefit is to make the body a little stronger, which can be said to be worth the loss."

"But the meridians are different, the meridians are used to run the aura, although it can't be stored, but if the aura keeps running in the meridians, isn't it equivalent to storage"?

"So, the cultivators began to expand the twelve positive veins, the eight veins of the Qi Sutra, at the beginning of the natural impact of the meridians to pieces, it is good to cultivate for a while, but even the dantian can be expanded, not to mention the meridians, like the gourd, with the help of high-level monks and pills, the eight veins of the Qi Jing also store more and more aura."

"This kind of realm that not only expands the dantian, but also expands the meridians, is called the twelfth layer of qi training, and it is also the highest realm in the qi refining period so far, and its aura reserves are fifty percent more than ordinary monks, just these five layers, it can already allow the twelve layers of qi cultivation monks to abuse and kill ordinary qi training, and even compared with the monks in the early stage of foundation building, it is completely true."

"Of course, this is not the credit of the extra fifty percent of the aura, everyone who is qualified to impact the twelve layers of qi training, is either the person who is blessed by chance, or the person who was born noble, and the exercises, martial arts, and magic weapons on the body are all top-notch, and the combat power is far beyond the same level, and the battle can be fought beyond the level. In this era, almost every great monk with an infantile background will find a way to get a panacea for future generations to help them become the twelfth layer of Qi cultivation, so as to lay a solid foundation and impact a higher future."