For the next period of time, Chu Nan's life was quite calm.

In addition to his normal choice of several courses, he spends most of his time studying the internal breathing skills redeemed from the database, except that he will go to alvie's place every other day to do experiments and chat with her, or simply ask Angie belle to go out for dinner.

With powerful data ability, these relatively low-level internal breathing skill methods are not difficult for him.

Taking the hurricane mind method as an example, Chu Nan has grasped the essentials after only practicing it for several times. Now he has not only successfully achieved the internal breathing extreme speed cycle called by the hurricane mind method, so as to greatly enhance the effect of power, but also expanded it to include more main meridians, forming such a high-speed cycle.

Then Chu Nan found that this mental method is not so much an internal breathing cultivation method as an internal breathing application method.

Because if you use it to cultivate internal breathing, the increase is not high. You can only say that it greatly shortens the cultivation time.

However, if the hurricane mind method is used to accelerate the internal breathing during combat, the intensity of internal breathing can be significantly enhanced.

For example, if Chu Nan doesn't carry out nine turns of internal breathing now, the original internal breathing intensity is just equivalent to the third-order internal breathing level warrior.

However, if you use the hurricane mind technique, you can increase the internal breathing intensity to close to that of the fourth level internal breathing warrior.

At first glance, this is a lot worse than the nine turn mental method, which can make the internal breathing nine turns and directly increase the internal breathing intensity of Southern Chu beyond the vast majority of fifth order internal breathing level warriors. However, the enhancement of internal breathing intensity by Hurricane mental method is different from that by nine turn mental method, so the two enhancements can be superimposed.

In other words, Chu Nan can turn the internal breathing nine times and then use the hurricane mind method to enhance it.

In this way, Chu Nan's internal breathing intensity not only exceeds all the fifth level internal breathing level warriors, but he even believes that it will not be weaker than the first level air breaking level warriors.

Of course, the strength of air breaking martial arts is mainly due to the use of space energy. It is of little significance to discuss the strength of internal breathing alone.

However, when Chu Nan tried to superimpose the internal breathing nine turns and the hurricane mental method, he found that with his extremely strong internal breathing at this time, the space energy aroused was significantly enhanced, and even there were faint signs of forming a small space universe.

Of course, it is impossible for him to keep his internal breathing in this ultra-high intensity all the time, so it is impossible to break through the pass of the universe and heaven.

Moreover, even if he could make such a breakthrough, he would not choose to do so.

This kind of breakthrough is made through the strengthened internal breathing after the superposition of special skills. Let alone the perfect breakthrough, there will be endless trouble in the future.

This point was clearly pointed out by the venerable auveli in his communication with Chu Nan.

These days, when Chu Nan is studying the internal breathing skill, he will ask the venerable auveli for remote communication for advice every time he accumulates some problems.

The venerable auveli has fully fulfilled her promise. Every time Chu Nan puts forward a communication, she will connect it at the first time and give a detailed analysis and answer to Chu Nan's questions.

Under the guidance of venerable auveli, Chu Nan's understanding of internal breathing skill also increased rapidly.

With his powerful data ability for in-depth analysis, Chu Nan is not only extremely relaxed in studying those low-level internal breathing skills, but also further strengthened his understanding of the nine turn mind method, and there are faint signs of a breakthrough.

At the same time, the internal breathing intensity after the superposition of nine turns of internal breathing and hurricane mental method greatly exceeded the limit of his meridians, resulting in serious damage to his meridians.

Then, in the familiar process of continuous meridian damage and repair, the meridians and flesh body of Southern Chu have been further strengthened.

In less than ten days, Chu Nan's internal breathing intensity has improved by leaps and bounds, from the third-order internal breathing level to the fourth-order internal breathing level in one fell swoop.

I'm afraid no martial artist has ever raised from level 2 internal breathing level to level 4 internal breathing level in a month!

According to Chu Nan's calculation, as long as he is given another month or two, his internal breathing intensity can break through to the level of a fifth level internal breathing warrior, and then for up to one month, the internal breathing intensity will be enough to break through the pass of the universe and heaven.

At that time, he can really try to face the cosmic pass!

But before that, there are some practical things to do.

That's a practical test.

"Hey, Chunan, I've finished signing up." Angie Beili raised the personal terminal on her wrist and smiled at Chu Nan like asking for credit: "in two days, we can go to the sapphire star region together."

"Play?" Chu Nan chuckled and shook his head. "Sapphire star field is not a fun place. Besides, we're going to take part in the trial. We're going to fight with others. What's fun?"

"Of course it's fun." Angie Belle still looked excited. "Think about it, if there are a lot of people fighting, there must be a lot of people injured, right? If there are a lot of injuries, then I have a lot of opportunities to practice my hand. What's more, most of the injured are martial artists. It's more interesting for me to practice my hand on them!"

Chu Nan could only roll his eyes.

Angela Belle was led around the world by the venerable Audrey to heal others since childhood. She not only has no resistance to someone's injury, but always looks full of interest.

For her, it is very interesting to use the inflammation of life to heal people, so she likes to see a large number of people injured, so as to meet her desire in this regard.

You know, this guy will even run to provoke young hooligans and local ruffians when he is free, and then cure them after they are injured.

This kind of behavior is no different from abnormal behavior in other people's eyes, but she enjoys it

"Really, the venerable auveli never found that his education of Angela Belle was a problem?"

Thinking that Angie Belle was taken around the world by the venerable auveli since childhood, Chu Nan moved in his heart and asked Angie Belle, "by the way, have you ever been to the sapphire star region with the venerable auveli before?"

"Yes." Angela Belle's answer confirmed Chu Nan's conjecture. "That's the most chaotic star field on the outside of Orion's spiral arm. The situation inside is very complex. A large number of warriors are often injured, and even various local wars will occur. So Shifu and I have not only been there, but also several times."

"Oh? Are you familiar with sapphire star domain?" Chu Nan's spirit was refreshed, opened his personal terminal and revealed a piece of information. "How much do you know about this planet Leviathan?"

"Leviathan..."

To Chu Nan's surprise, after hearing this term, Angie Belle's bright smile just hung on her face disappeared, and a ray of deep sadness hung on her face.

Chu Nan was shocked.

Knowing Angie Belle for such a long time, she has always looked bright and clear. This is the first time to see a sad expression on her face. (to be continued)