Leaning over to pick up the half-moon stone, Cheng Huan couldn't help but fall into deep thought again.

This obsidian half-moon stone is obviously not an ordinary stone, although it looks like it is indeed a chaotic item, but its edges are clearly smooth and polished.

It can be imagined how its owner cherishes it, and it must be because it is often held in his hand to play with it, so that the half-moon stone will show a smooth and translucent appearance.

It was the moment when Cheng Huan put the half-moon stone in the palm of her hand and carefully examined it, when suddenly a strong impact with heat began to swim in her body.

Cheng Huan had already experienced this situation once, and she knew that it was a sign that the spiritual cultivation in her body was about to break through. So Cheng Huan no longer paid attention to the mixed thoughts in his heart, and even meditated on the stone bed and settled down.

At this time, when Cheng Huan entered her own sea of consciousness, she was surprised to find that there had actually been a breakthrough in the spiritual cultivation in her body last night. I don't know when, her internal strength cultivation has already stepped into the chemical weapon realm.

At this time, two words suddenly popped up in Cheng Huan's mind - double cultivation.

She had seen this strange magic cultivation trick in Liu Shuwen's medical books, the double cultivator must be a man and a woman, and when the two of them were engaged in the matter of blending clouds and rain, they could transmit the spiritual cultivation in the bodies of both sides to each other, so as to achieve the purpose of purifying the internal force, so that their spiritual ability could be upgraded in great strides.

However, Cheng Huan clearly remembered that according to medical records, one of the two sides of the double cultivation must have a physique supplemented by medicine. The reason why such a strange method is used to obtain pure internal force spiritual cultivation is because the physique of the party who is assisted by medicine is different from ordinary people, and it is impossible for him to achieve great success in martial arts cultivation.

In addition, the selection of objects for double cultivation also has extremely strict requirements. Those who have been subjected to dual cultivation, if they are not masters of the advanced spiritual level, must also be people who are extremely harmonious with the five elements of yin and yang and the other party. It is by no means easy to find such a person who is suitable for one's dual cultivation in the vast sea of people.

But this kind of cultivation technique naturally has drawbacks, otherwise it will not be criticized by people in the rivers and lakes.

In the double cultivation, the one who uses medicine to nourish the body, because for a long time immersed in strange medicines, the longer the time, the more the nature will be extinguished. If you don't get out early, you may be transformed into a ghostly medicine man.

Cheng Huan smiled bitterly and thought that he was also a blessing in disguise.

Unexpectedly, in the process of double cultivation, she also improved her spiritual cultivation, and in one night, she was directly promoted to the cultivation of the ninth rank of the chemical martial realm.

Although the double cultivation is mainly aimed at the spiritual enhancement of the party with poor physical fitness, the party who is subject to the double cultivation is not without nothing. In the same way, those who have been dual-cultivated will also receive spiritual ascension, but the degree of elevation is not a step.

And now, probably because the remaining internal force of the other party in Cheng Huan's body is the remaining internal force, he was inspired by familiar objects, and began to swim freely in Cheng Huan's body.

Although there has been a great breakthrough in spirituality, Cheng Huan knows that now is not the time to be happy. The top priority is to properly channel the remaining internal force in her body for her own use.

If it is not well guided and allowed to swim in the body, it is likely to lead to the end of internal breath disorder. Many of the so-called madness is caused by such negligence.

Cheng Huan quietly summoned two strong True Yuan forces from his body, one blocking and the other chasing, tightly entwining the external internal force.