The method of crossing Qi recorded in ancient books includes this mouth to mouth crossing Qi, which is only possible between lovers or couples.

Because this method of crossing Qi requires that the hearts of both sides are interlinked without any distractions, otherwise the previous achievements will be wasted.

Although it looks like an ordinary couple kissing, it actually contains a mystery.

Since ancient times, the male body is Yang and the female body is Yin. The so-called method of crossing Qi is to keep Yin and Yang at a balance point, and the key to the balance point lies in the mouth to mouth of both sides, just as the Yin and Yang in the Tai Chi diagram bite each other.

It can also be said that the medicine refined by Zhou Tiangang has not been fully practiced. At the moment, he is using the bipolar state of yin and Yang presented by himself and LV Lingyu to separate the powerful drug properties in the medicine with the force of yin and Yang. This is the real great perfection!

Zhou Tian's life essence and blue blood rhombic crystal anther juice, which were integrated into one, slowly flowed to LV Lingyu.

It just didn't directly enter LV Lingyu's mouth, but just in the middle of Zhou Tian and LV Lingyu's lips. This is the place where the force of yin and Yang is most balanced.

With the passage of time, a red light emanated from Zhou Tian and a blue light emanated from LV Lingyu, forming two pillars of light, one red and one blue.

The sky over Yaowang valley was shrouded by these two light pillars. Only red and blue were seen in the sky. At the moment, they were constantly merging with each other.

With the integration, a force fell on Zhou Tian and LV Lingyu from heaven, as if this heaven and earth were refining Zhou Tian and LV Lingyu.

If you are the third elder of the ghost gate, you will be completely shocked if you are present.

At the moment, Zhou Tian and LV Lingyu form a small world to refine the medicine in their mouth, and this world is a big world, which in turn refines Zhou Tian and LV Lingyu.

This is a kind of supreme state. It is said that if you want to refine the magic medicine, you must present this state, because the magic medicine only presents a small world in the Dan furnace, and the outside world is a big world. The two are refined and integrated with each other. Only in this case can it be refined, that is to say, the medicine refined by Zhou Tian has gradually approached the magic medicine.

If Zhou Tian saw this scene, he would also be very shocked, because in his expectation, he did not expect to achieve this step. Outside Heaven and earth, inside heaven and earth, this is a field that very people can relate to. Even with his current realm and understanding, he can't understand this realm. It can be said that this is a situation that can occur only by chance.

At the same time, there was a change outside Yaowang valley. I saw a strange situation in the sky within a hundred miles of the area where Yaowang Valley is located. There are red clouds on one side and blue sky on the other. Then, with the power coming from nowhere, it began to rotate, and an inexplicable force condensed in the whole sky.

"What on earth is that bastard boy refining in there? How could it cause such a big reaction? He should not be trying to refine fairy medicine, otherwise there would be such a big movement!" the immortal doctor was frightened.

He is also a well-informed person. He has seen many ancient books, so he also knows about this change in heaven and earth. It is recorded in ancient books that when refining utensils or pills, when refining powerful things, it will cause changes in heaven and earth. It will even lead to heaven's calamity, such as the calamity of refining utensils and the calamity of refining pills, which are difficult for practitioners to deal with.

Although the immortal doctor has no doubt about Zhou Tian's talent, Zhou Tian is too young. It's incredible to say that Zhou Tian can refine fairy medicine. It's really acting against heaven!

"Fairy medicine? Can he really refine fairy medicine?" the supernatural man was shocked, which was really terrible. Although he was not a true cultivator, he still had a certain concept of the existence of fairy medicine.

"Who knows, he is not something we can guess." the immortal doctor sighed lightly.

At first, Zhou Tian attracted her attention only because Zhou Tian's medical skills were really good and he was still very young. But with contact, he found that other people's medical skills were only one aspect. Cultivation and talent were the real strength of Zhou Tian.

In the distance, the fighting disaster and Xifeng stopped at the same time. This change of heaven and earth can see more different things at their level.

"Er Gouzi, what did you say that guy was refining? How could it cause such a terrible change?" Xifeng asked lightly.

"Hehe, if you don't admit it, what can you say? Of course it's refining pills, fool."

Zhou Tian is the descendant of the medicine king. Of course, he is refining pills. Will he still go to practice weapons?

Xifeng was furious. "Damn two dogs! Do you think you are the smartest?"

"I don't deserve to be the smartest, but I'm still very confident compared with you." the disaster continued to ridicule.

"Er Gouzi! Look, I'm not going to teach you a good lesson today! Children, put me in the array! I'm going to make a braised dog meat today!"

"Wow! Yaoji, you shameless man let your men do it!"

"You have the ability to call a group!"

"You're great!"

Disaster Dou didn't have the idea of fighting with Xifeng, so he slipped away.

It is not so stupid. If it is trapped by that group of birds, it will suffer a heavy loss.

The sky changed again, and the clouds that had merged with each other gradually concentrated, from a hundred miles wide to the size of a fist, and then disappeared.

"It seems that the pill has been practiced."

It's a pity that the immortal doctor spoke softly. If the clouds condensed into a robbery cloud just now, it's called a miracle.

Unfortunately, Zhou Tian can't refine the magic medicine after all. However, this is more in line with common sense. If Zhou naive refined a fairy medicine, how would others live.

In Yaowang Valley, the changes of Zhou Tian and LV Lingyu have reached the last moment. A pill glittering with three colors appears between the lips of the two people.

At this time, LV Lingyu opened her eyes and looked at Zhou Tian with a touch of shame.

"You see, this is the pill that we two worked together to refine. No, it should be said that we kissed." Zhou Tian smiled.

LV Lingyu just smiled gently, then kissed Zhou Tian's lips and quickly retracted back.

"Oh, you're taking advantage of me. How can you do this? I have to get it back, or I'll suffer a heavy loss."

Zhou Tian smiled, put his hand around LV Lingyu and kissed him. This time, he didn't need to cross Qi and refine pills, but a greedy request.