They are currently inside a cave; otherwise, Chen Zhou would have already begun cultivating the Dragon Wave Technique. However, the cave is too small for him to fully utilize his abilities, which is why he is able to rest.

"Hiss hiss hiss..."

At this moment, two true qi turtles appeared in front of Wo Wan's body. Wo Wan used her fingertips to conduct true qi to draw the turtle patterns. The two patterns were drawn almost simultaneously. Chen Zhou tilted his head and stared blankly for a while before continuing to sleep.

I didn't expect Wo Wan to learn so quickly! She can now draw two turtles at the same time? You know, even Chen Zhou didn't cultivate to draw two turtles at the same time at such a fast speed back then.

Chen Zhou closed his eyes and continued to sleep.

Meanwhile, Wo Wan continued to use her true energy to paint, working with both hands simultaneously. The two turtles were quickly painted by Wo Wan, and neither of them disappeared. What Chen Zhou didn't know was that it was already midnight, and five or six hours had passed since they entered the cave.

For the past five or six hours, Wo Wan hadn't stopped for a moment, but had been cultivating and drawing the turtle the entire time. Even Wo Wan felt like vomiting whenever she saw a turtle now.

In particular, the turtle painted using true qi seemed to have a life of its own, appearing incredibly lifelike.

"I can already draw small turtles perfectly, now let's try large ones!" Wo Wan murmured.

With small-scale turtle paintings, Wo Wan can already achieve the level of drawing one turtle with each hand simultaneously. However, large-scale paintings will put even greater demands on Wo Wan's ability to maintain his true energy, because the larger the volume, the more time it will take to complete the painting. Although the lines are all equally complex, they are undoubtedly much longer.

Wo Wan had already depleted a lot of her true energy through cultivation, but her strength at the Fusion stage was not to be underestimated, and her true energy reserves were still very high. After drawing continuously for five or six hours, Wo Wan still had some true energy left.

This section is perfectly adequate for drawing this large turtle.

Wo Wan waved away the two small turtles in front of her, and after a short rest to recover her true energy, she immediately began the next step: to paint the large turtle.

Painting a large turtle isn't necessarily difficult; the real challenge for Wo Wan is figuring out how long his inner energy can remain intact.

Actually, this problem can be solved by increasing the duration of the exercise through better control of internal energy.

Whenever a wisp of true energy is about to disappear, Wo Wan can replenish it with new true energy and then continue painting. In this way, whenever true energy is about to disappear, she can immediately replenish it or use her new true energy to redraw that line to fill it in.

Chen Zhou's previous method was to immediately replenish the lost true energy using his own true energy.

This process is constantly growing. Wo Wan has cultivated to the point where she can feel that the duration of her true energy has increased significantly. Wo Wan is secretly amazed by the wonder of this technique. She never thought that a technique for controlling true energy really existed in this world, and that it was so effective.

Why don't those who teach me formations have this technique? From Chen Zhou's words, I know that this technique was a gift from someone else, which means that its value isn't very high. Why doesn't my formation instructor let me practice this technique?

Perhaps even the tutor himself didn't know?

Moreover, it wasn't just him who hadn't practiced this technique; even the children of high-ranking officials and nobles from the Northern Kingdom, and even princes, who studied formations with him, hadn't learned it.

Wo Wan gradually came to believe that the instructors wouldn't be unaware of this technique. The only possibility was that the instructors had deliberately concealed the formation from them, preventing them from learning it.

As for why they were kept in the dark about learning these skills, there's probably only one reason: they didn't want the Northern Kingdom to have too many powerful array masters. That's why array masters are so scarce in the Northern Kingdom.

"Sizzle sizzle..."

Wo Wan's true energy quickly transformed into lines, and Wo Wan seized every second, not letting time slip away in vain. By speeding up her painting, she could outline more lines of true energy before it disappeared.

That's what Wo Wan thought.

Lines of true energy appeared in front of Wo Wan, connecting with the previous lines of true energy. Once these lines were connected, they all emitted light. The true energy that Wo Wan had condensed originally had no light, but after the lines of true energy were connected, they emitted light.

At this moment, the light, like the two small turtles from before, illuminated the cave again, and naturally fell on Chen Zhou's face, who was still fast asleep.

The outline of this large turtle was slowly emerging in Wo Wan's hands. Now, all that was needed was to refine the details and add the lines of true energy, and the large turtle would be complete.

Wo Wan dared not slack off in the slightest. After finishing drawing the outer shape of the turtle, she immediately devoted herself to drawing the inside of the turtle's body. One by one, lines of true energy appeared rapidly inside the large turtle's body.

That's right, Wo Wan has now begun to control two streams of true energy simultaneously. Controlling multiple streams of true energy is very advantageous for Wo Wan at this point, although she has only just learned it and is not yet very proficient. However, it is indeed much better than when she first started in the evening.

Wo Wan secretly made up her mind that as soon as she had sketched out the large turtle, she would immediately start sketching a turtle on Chen Zhou's face.

Make this guy who underestimated me pay the price.

Wo Wan was single-mindedly focused on fulfilling her dream, so her movements became faster, her control of true energy became more coordinated, and the position of each line of true energy became more precise.

Wo Wan moved very quickly, and in no time a turtle of true energy was almost in the making.

Now, Wo Wan must also pay attention to the outer edge of the turtle she had previously drawn. The outer edge of the turtle is starting to fade, and Wo Wan must prepare the exact same true energy lines in advance to fill in the gaps the moment they disappear.

After preparing, Wo Wan continued to outline the next step. Just as she finished the last step, the outermost true energy completely dissipated. Wo Wan seized the opportunity and immediately added the true energy lines she had prepared in advance. The whole process took less than a second.

If you slow down even by a second, and there's no immediate replenishment of the dissipated true energy, that area will completely dissipate, because the location of those true energy lines is crucial, situated at the intersection of several true energy lines.

These lines of true energy are all transmitting the true energy within their own lines to each other, making the distribution of true energy across the entire turtle more even, so that the turtle can exist for a longer time and will not dissipate so easily.

"Finally finished!"