He had originally thought that this was just an ordinary pearl, or perhaps it was just an object from Adept Yin Yang's body.

But after hearing Xuan Jizi's words, Shi Lei realized that the matter was possibly not as simple as he had imagined.

"Have you ever thought about why there was only you and this gem in the surroundings when Yin Yang Adept exploded?"

Xuan Jizi said with a smile.

After hearing what he said, Shi Lei suddenly remembered that the situation was actually like that.

"Yin And Yang Power are the most primitive forms of energy in this world. In the very beginning of the Primal Chaos, there were only two types of energy in the world. One was yin and the other was yang.

Xuan Jizi slowly walked to the front of the orb. Under the light of the lamp, the purple light of the orb was imprinted on his face, making him look somewhat strange.

"However, this magical power is not something that anyone can grasp. However, once it is grasped, whether it is on the road of cultivation or in other aspects, it will be greatly increased."

Shi Lei continued to listen with interest.

"Let's not talk about anything else. Just your medical skills alone, do you know of the great power that appeared in history, the Medical Sage?"

Xuan Jizi waved his hand, and the lights in the entire room instantly extinguished. Then, a large screen like object appeared in front of Shi Lei, and a lot of pictures appeared on top of it.

"Sun Simei, Bian Que, Hua Tuo, and the renowned Zhang Zhongjing have all comprehended Yin And Yang Power before."

It was only when Xuan Jizi said these words that Shi Lei remembered that the medical uses of the Yin And Yang Power he had seen back then were all real.

"But why haven't I seen it in such a long time?"

Shi Lei was most curious about this point.

"You need to know that the Yin And Yang Power is the world's most powerful force, but it is also the power that is most difficult to comprehend. Do you know the origins of the Yin Yang Spiritual Master?"

The screen Xuan Jizi appeared on instantly showed a picture of Yin Yang Spiritual Master.

A hundred years ago, the Yin Yang Priestess was born into a wealthy family. However, when she was in her teens, her family had fallen, and even when she was 30, she still failed to accomplish anything and became a street hooligan.

However, no one knew what kind of fortuitous opportunity he had encountered in the future. One night, the entire city became as bright as day, and a strong light suddenly appeared in the sky above the city. On the second day, Yin And Yang Power that had not appeared for more than five hundred years finally appeared in this world.

He claimed to be a Yin Yang Priestess and had used his own strength to do many things. Many people in the cultivation world said that a Yin Yang Priestess was the person who had the greatest chance of touching the cultivation ceiling.

However, the greater the strength, the more Yin Yang Zhenren's attitude gradually changed. He had seen the difference between a fallen family member and a fallen family member, so he used his strength to make himself more vain and even did many things that would harm the common people.

The situation became more and more chaotic, and it would be best if everyone got angry. Thus, before the power of Adept Yinyang was completely grasped, the few major powers set up a trap to trap him within their Red Cliff Mountain.

It is very difficult for someone to rely on their own strength to comprehend it. Hence, they have to be imprisoned within the Red Cliff Mountain, and wait for the Yin Yang Priestess to find out when they were wrong before they can release him. "

Xuan Jizi laughed as he spoke.

"They left a backup plan to prevent Yin Yang Priestess from escaping. Who would've thought that you would trigger it? That's how things turned out."

It seemed that Xuan Jizi was quite happy about this matter.

But Shi Lei would not care about these things, using his own words, he did not let anyone down, so there was no need to think too much about it.

"In other words, this pearl was the one who saved me at that time?"

Shi Lei turned and looked at the orb behind him, his eyes filled with disbelief.

You have to understand that the Yin Yang Priestess that Xuan Jizi spoke of was really powerful, but this kind of power, which could directly destroy the Yin Yang Priestess, was unable to cause Shi Lei to disappear.

"What do you think?"

Xuan Jizi said with a smile.

"Right now, you have obtained a heavenly great opportunity. If you can absorb all the Yin And Yang Power in this orb, you will be the next …"

Xuan Jizi did not finish his words, but Shi Lei knew what he wanted to say.

The historical Zhang Zhongjing and others were people whose names were recorded in the annals of history. They had saved so many lives, that even the current Medical Sage who had been officially certified could not even be mentioned in the same breath as them.

Now the chance had come.

Shi Lei was suddenly a little excited in his heart.

Yin Yang Medicine, this is the most powerful medicine, and humans' essence is also Yin and Yang. The so-called cold and warm, are all caused by Yin and Yang, and the body's discomfort is also the result of Yin and Yang being out of balance. If you can use Yin Yang Medicine to regulate the balance between Yin and Yang in everyone's body, you will be the next Medical Sage.

There were many ways to cure an illness and save a person. The existence and emergence of the Chinese Medical Association was to develop new medicines. When certain situations arose, the medicines could replace the effects of the doctors.

The other method was to rely on one's own strength and superb medical skills to solve all kinds of difficult problems.

This was something that Shi Lei needed to do right now, especially with the help of the Yin And Yang Power.

"Can I do it?"

Looking at the flickering pearl beside him, Shi Lei actually felt a little lost for a moment.

"Can I really adapt to the Yin And Yang Power?"

When he didn't know the importance of Yin And Yang Power, Shi Lei didn't really feel it, but after hearing what Xuan Jizi had said, he felt the pressure on him increase a lot.

"It's fine, as long as you relax. Yin And Yang Power s are a rare type of power, if anyone could control them, they wouldn't be this crucial. Think about how many Medical Sage in their thousands of years of history have they?"

Xuan Jizi comforted Shi Lei once again.

"Mm, I understand."

Shi Lei nodded.

The pearl was still radiating with its own light, and after turning off the light in the room, it looked even more dazzling.

"Is this the legendary Yin And Yang Power?"

Shi Lei lost himself.

Xuan Jizi only smiled as he looked at Shi Lei. His body gradually faded without any warning, and he only left behind a few words when he was about to disappear.

"Grasp the relationship between you and the precious pearl well. This is the best opportunity for you to perceive it."

By the time Shi Lei reacted, Xuan Jizi had already disappeared, leaving behind only the words that kept echoing in the air.