Fang Lin left with a large number of medical books, including "The Barefoot Doctor's Handbook", "Surgical Authenticity", "Principles of Anatomy" and other medical works.

Medicine is different from other disciplines, other disciplines are basically you learn the corresponding level, in order to master the corresponding knowledge, but medicine is different, most of the knowledge can be browsed after crossing the "entry", the real test is more experience and technology.

Therefore, after 25 years of medicine, Feng Xue can almost find most of the mainstream medical works, because in medicine, the mainstream means the foundation.

Compared to those secret recipes and stunts that required high skills to obtain, these things were undoubtedly what Fang Lin needed the most.

For these textbooks, Fang Lin probably flipped through them and found a treasure, and after thanking him repeatedly, he disappeared into the distance with his army of living dead, but at this time, Feng Xue, who hadn't slept much all night, was very excited, and immediately summoned Xu Fu and asked him to send the three girls to the county office, while he went into the study and took out the booklet that Fang Lin gave him.

There were only a dozen pages in front of and behind the booklet, not research notes, but like the kind of textbook that was specially copied out and intended to be handed over to his disciples, which made Feng Xue sure that this must be what Fang Lin had planned to give to him from the beginning.

But he didn't care about that, and from the first page, he began to read carefully.

What was recorded at the front was not the Qi and Blood Spell that Fang Lin had learned first, but some statements about the theory of essence qi.

Fang Lin believes that this qi and blood is the essence of all things, representing the vitality and the basis of the existence of all living beings, corresponding to the physical body, human beings will age and die, because the efficiency of transforming essence qi through eating is not as good as maintaining their own consumption.

And Fang Lin has lived for more than 200 years by absorbing qi and blood, and it seems that he has also applied to his theory.

Living in a mythical world, Feng Xue does not intend to explain everything with her common sense of the modern earth, even if aging is due to the limit of cell self-replication, then what determines this limit?

And in a sense, this theory that "eating is to convert the essence in food into essence that humans can absorb" is quite similar to the legendary "refining and refining qi".

But according to what you say, the reason why those demons, demons, and innate powers can live forever is because they can directly swallow the aura between heaven and earth to replenish their own essence?

"Sure enough, it kind of funny. Feng Xue sighed secretly in her heart, this Fang Lin deserved to be a scholar, relying on a simple healing spell, he was able to study a whole system! Unfortunately, there is no good enough basic education, otherwise I am afraid it will be even more terrifying.

"I knew that I would have left him behind, anyway, I don't have many hundred mouths in this Zhuangzi. Feng Xue muttered in his heart, but he also knew that it was not possible, if he didn't inform Wu Zhu that it was okay, but the real monk was about to arrive, he would definitely not stay in Sheyang County.

Letting go of the regret in her heart, Feng Xue continued to read.

After the basic theory, there is the explanation of several runes.

The runes are not complicated, but they don't seem to be so easy to remember, and what makes Feng Xue most helpless is that it can't activate the [Language 100] plug-in, that is, these runes are not words with the meaning of "language".

"So, these runes are actually trumpet formations that look like words?" Feng Xue had a slight realization in his heart, but he didn't rush to write down the so-called runes, but first read the annotations to the runes.

According to Fang Lin's records, these three runes were the most important part of the entire qi and blood spell system, the first was used to extract qi and blood, the second was used to guide qi and blood, and the third was used to release qi and blood. And all of his current Qi and Blood spells were based on these three runes, combined with the other symbols on the Beast Skin Scroll, as well as the antipathy that had been experimented with over the years.

"A copy of the original Hides Scroll should have been printed. Feng Xue thought so, but shook her head again, greed is not enough to swallow elephants, people have studied for two hundred years, aren't you satisfied with getting the research results directly?

Let go of greed and continue to flip down, and one by one the spell worlds based on the three runes gradually appeared in front of Feng Xue-

From the simplest transfer of qi and blood to heal injuries, to the distribution of qi and blood to increase lifespan.

From the external blood bar that stores qi and blood, to the soul trapping technique that uses qi and blood to bind the soul.

From a coma technique that cuts off the flow of qi and blood, to a puppet technique that manipulates the flow of qi and blood to control the human body.

The complete R&D lines made Feng Xue fascinated, although there was no whimsical skill structure, but the steady and steady progress of the research process made Feng Xue feel a sense of order and beauty.

"This Fang Lin is really not simple......" Feng Xue finished reading the resurrection technique on the last page, turned the page of the book to the first page again, and began to memorize the runes on it carefully.

The three basic runes actually only had a few strokes, otherwise Fang Lin would not have been able to finish drawing them before he took a breath, but this thing knew that it was a mistake and a thousand miles wrong, Feng Xue had to cheer up and memorize every angle and turn as much as possible.

The sky outside gradually became brighter, but Feng Xue was still in the excitement of learning, and there were not even ten spells in the original booklet, but this kind of research thought made Feng Xue have no doubt that he could continue to develop along this path.

To put it bluntly, extracting, guiding, and releasing these three runes are almost equivalent to a complete circulation system, just like a power station, providing a steady stream of energy, Feng Xue only needs to think about how to build a "consumer appliance" and use these energies now.

Moreover, even if Feng Xue didn't study it further, just the spells above had already made Feng Xue very useful-

The coma technique and puppet technique provide him with a certain amount of self-protection ability, although I am afraid that it is also used by mortals, but at least there is no need to worry about the guardian jumping back, the technology of prolonging life by absorbing qi and blood has solved the lifespan problem that Feng Xue has been worried about, in addition, what Feng Xue likes the most is the spell of "Qi and Blood Forging Body".

Although it is called Qi and Blood Forging, this spell is not the kind of horizontal martial arts, and it is invulnerable, it itself is a technique that Fang Lin researched in the early days to solve the problem of muscle atrophy of those living dead, and it can be regarded as a transitional version of the puppet technique.

But in Feng Xue's opinion, this technique of guiding muscle movement with qi and blood is simply an experience of "becoming a muscular man without being very troublesome and tired" for herself, a dead house who is copying books every day and has no time to exercise!

"But you have to go with your fitness knowledge...... Well, let's look for sports medicine, at least the distribution of red and white muscles should be reasonable...... With this, it is even possible to develop a set of spells for military training, so that soldiers can save more time for physical training for skill training......"

Feng Xue entered the golden finger and began to rummage through the corresponding knowledge, but in his heart, he was thinking about what new tricks other spells could play......