Guo Nanzheng immediately said:

“Many people think that Huangdi Neijing is a medical book, but in fact it is not only a medical book, it is also a health-preserving secret book.

This health-preserving secret book not only talks about methods, but more about the mental method, which is really powerful.

It was only after reading "The Yellow Emperor's Classic of Internal Medicine" that I realized that many of people's diseases are not caused by the outside world, but by their hearts.

That is to say, some diseases spread from the outside to the inside, while some diseases spread from the inside to the outside.

In our daily lives, many people are not aware that some diseases are caused from the inside out, and they think that they are all external causes, and do not look for the reasons within themselves.

In fact, most of the diseases are caused by one's own reasons. These are evil diseases from the inside out. Once such diseases break out, they are in the late stage and are difficult to treat.

The Yellow Emperor's Classic of Internal Medicine explains this point so thoroughly. I really admire its wisdom.

In addition, "The Yellow Emperor's Classic of Internal Medicine" is also a philosophy of life.

Although the book is always talking about medical skills, the human body, and pathology, every random sentence reflects the philosophy of life while talking about these things. It is really powerful. I gained a lot of insights after reading this book, which is much more profound than my study of Confucianism.

In the future, I must study medicine with you, Master. Medicine is the root of everything. I really like it."

Zhang Yuan looked at Guo Nanzheng's extremely excited expression and said with a smile:

"Nanzheng, with your mentality, I will be very proud to teach you medicine in the future.

Well, I see that you are so passionate about studying the Yellow Emperor's Classic of Internal Medicine, it won't take you long to finish it. Remember to take notes after you finish.

Because after learning it once, you will have to learn it a second time, a third time, or at least five times.

However, after finishing studying "Huangdi Neijing" for the first time, you can study "Compendium of Materia Medica", study "Six-Jing Syndrome Differentiation", and then study "Nanjing", and after studying "Nanjing", you can study "Treatise on Febrile Diseases".

After you have learned this set of things, you can officially follow me, and I will personally teach you medical skills in the future."

After listening to this, Guo Nanzheng's eyes lit up. He immediately picked up a pen and wrote down what Zhang Yuan asked him to learn on paper, then nodded heavily and said:

“Don’t worry, Master.

I will listen to you and study hard, and never let you down. I will follow you and learn from you the real skills and methods of curing diseases and saving lives."

Seeing how much Guo Nanzheng loved learning and was so motivated, Zhang Yuan liked him more and more and felt that taking Guo Nanzheng as his apprentice was an extremely correct choice.

So Zhang Yuan patted Guo Nanzheng on the shoulder with satisfaction and said:

"Nan Zheng, you are really a good disciple that the master likes.

How about this, I'll take your pulse again and check your body, if there's nothing wrong, you can come with me to see your sister."

Guo Nanzheng nodded heavily and said, "Okay, Master."

After saying that, Guo Nanzheng very obediently stretched out both arms in front of Zhang Yuan and asked Zhang Yuan to take his pulse.

Zhang Yuan placed his hand on Guo Nanzheng's pulse and felt it.

Now the poison in Guo Nanzheng's body has been completely suppressed, and the three-day blood curse that Guo Nanzheng was previously hit by has now been completely lifted.

Zhang Yuan has now learned witchcraft and understands that...the method of perceiving witchcraft requires the use of spiritual power, and other methods are not advisable.

So, Zhang Yuan tried to use some of the witchcraft skills he had learned to sense the traces of witchcraft on Guo Nanzheng's body.

It really surprised Zhang Yuan that he could sense that Guo Nanzheng was indeed entangled in witchcraft.

And the perception of this spiritual power is truly novel.

Through careful and meticulous perception over and over again, Zhang Yuan finally confirmed that the witchcraft used by Guo Nanzheng was a very deadly and evil trick.

Once someone falls under this kind of witchcraft, their mind will be in a state of chaos, and they will have no idea what they are doing or saying, and they will become like crazy.

However, the reason why Guo Nanzheng did not show such symptoms very obviously at that time, but kept coughing up blood and finally fell into a coma, was mainly because this witchcraft accidentally triggered the strange poison planted by the members of the Jiuju Sect in Guo Nanzheng's body, as well as the three-day blood curse that he was infected with.

It was precisely for this reason that Guo Nanzheng only showed a little bit of evil intentions, and the rest were symptoms of coughing up blood.

Now that Zhang Yuan has sensed this witchcraft, he seems to be powerless.

Because Zhang Yuan's current research on witchcraft is so far behind, he has no way to help Guo Nanzheng in this regard.

After taking his fingers off Guo Nanzheng's pulse, Zhang Yuan took a long breath, looked at Guo Nanzheng and said:

"Nanzheng, it's okay. You are in good health. If you have any symptoms in the future, remember to tell me."

Guo Nanzheng said happily:

“Okay Master, I knew I’d be fine with you here.

Then let's go find my sister. My sister has been obsessed with martial arts recently and she always practices swordplay."

Zhang Yuan smiled and said:

"Oh, your sister actually likes to practice swordplay. She really has a bright future. Let's go and meet her."

Next, the group came to the garden in the backyard. Before they reached the small square for sword practice, they heard the crisp sound of long swords rustling.

When he got closer, Zhang Yuan saw Guo Nanyue, dressed in ancient costume, dancing gracefully in the woods and practicing sword skills, which looked quite beautiful.

Although Guo Nanyue is only 13 years old now, the way he practices sword in ancient costume is really unique. He will definitely be a beauty when he grows up.

Zhang Yuan did not interrupt immediately, but just stood there watching Guo Nanyue practice sword.

After Guo Nanyue finished practicing a set of sword techniques, he put away his sword and walked quickly towards Zhang Yuan.

After seeing Zhang Yuan, he bowed respectfully and said:

"Dr. Zhang, you are here. Nanyue meets Dr. Zhang."

Then Guo Nanyue also bowed to Guo Qinian very politely.

Guo Qinian waved his hand and said:

"Nanyue, Dr. Zhang wants to talk to you about something, so it's not convenient for me to stay here. I have something else to do first."

After saying this, Guo Qinian walked away very tactfully.

As soon as Guo Qinian left, the rest of the Guo family servants also left in a hurry.

Only Guo Nanyue, Guo Nanzheng, Zhang Yuan, Heitao and Magalina were left at the scene.

Guo Nanyue looked at the people leaving and said to Zhang Yuan with a smile:

"Dr. Zhang, what do you want to see me for?

I really didn't expect that you, Doctor Zhang, would take the initiative to come to me. This is quite surprising to me."

Zhang Yuan smiled and said:

"What's so surprising about this? Not only did I come to you on my own initiative, I also have a surprise for you."

Guo Nanyue immediately looked puzzled.

"Surprise? Is that so good? Doctor Zhang, you...you are so good to me. Can you tell me what surprise you are going to give me?"

Zhang Yuan smiled but said nothing.

This made Guo Nanyue even more confused.

Guo Nanzheng, as well as Heitao and Margarina who were following Zhang Yuan, were a little confused about what the surprise Zhang Yuan was talking about.

However, Zhang Yuan refused to say it directly when everyone was looking at him.

Zhang Yuan then said:

"Nanyue, you should know about this surprise. Why don't you recall and think about what you particularly wanted when we last met."

Guo Nanyue immediately started to think about it, and suddenly her eyes lit up and she said incredulously:

"Dr. Zhang, no way, you really agreed? You, you are willing to be my godfather? Really? Is this true?"

Zhang Yuan smiled and said:

“Well, I was also very conflicted about this. I thought about it for a long time after I went back.

The more I think about it, the more I feel that you are a talented person. I can't let you go.

I have already accepted Nan Zheng as my good disciple, so it is not impossible for me to accept you as my adopted daughter, so I want to see what you think. If you are willing, then we can conclude this relationship now. If you are not willing, then just pretend that I am not here today."

Guo Nanyue said without thinking:

"Yes, of course I do, godfather.

My dear godfather, from today on you are my godfather."

Seeing Guo Nanyue so excited, Zhang Yuan muttered to himself, it seems that the old witch really wants to get close to me, but I don't know what her purpose is after getting close to me.

But Zhang Yuan didn't care. He just wanted to learn witchcraft now anyway, and the person with the strongest witchcraft skills around him was Guo Nanyue. He had no other choice but to learn from him.

So Zhang Yuan coughed lightly and said in an embarrassed manner:

"Nanyue, don't be so excited. Although you want to worship me as your godfather, you still need your father's consent. I'd better call your father first and ask his opinion. We have to take it step by step."

Guo Nanyue did not give Zhang Yuan any chance to hesitate. She knelt down in front of Zhang Yuan with a plop, and then kowtowed to Zhang Yuan three times without saying a word.

"Adoptive father, I kowtow to you. From today on, you are my adoptive father and I am your daughter.

Godfather, can I call you dad now?"

Zhang Yuan found this sudden closeness a little hard to accept. Although he adopted Guo Nanyue as his adopted daughter, Guo Nanyue was a little too easy to talk to. She could just call him godfather, but he couldn't. She insisted on calling him dad. It was really difficult to deal with.

No one knows who the old witch living inside Guo Nanyue's body is.

How could she have the nerve to say these words with such a pure and innocent look?

However, since Guo Nanyue was willing to lower herself so much to become his adopted daughter, she kowtowed and called him dad.

Naturally, Zhang Yuan didn't want to appear too nervous, as that would be a bit unreasonable, so Zhang Yuan hurriedly helped Guo Nanyue up from the ground.

With a smile on his face he said:

“Think about it, and you can yell if you want.

Now that we both have agreed, you still have to tell your father about this, so you can give your father a call and tell him about it."

Guo Nanyue nodded and said:

"No problem, I'll call my father right away."

After saying that, Guo Nanyue immediately raised her wrist and clicked on her smart watch to call Guo Qiming. After the call was connected, Guo Nanyue said straight to the point:

"Dad, I found a new dad. From now on I have a godfather."

Guo Qiming was confused at first, and after a long while he said:

"Dr. Zhang, is that Dr. Zhang?"

Guo Nanyue said:

"Yes, I am already Dr. Zhang's adopted daughter. Are you happy?"

Guo Qiming burst into laughter and said quickly:

"Okay, okay, you are really my good daughter. OK, from now on, you are Dr. Zhang's adopted daughter. Um... Is Dr. Zhang here now?"