Lin Wu didn't want to directly use the effect of the sapphire meridians as he wouldn't be able to tell how much of a difference they made in his strength. Choosing to use his own power first would give him a good way to compare them.

At first, he lightly tapped with his tail onto the barrier and saw no effect. The barrier stood there as strong as ever. Lin Wu then increased his power and used about a quarter of his strength.

~thud~

The barrier was still able to bear it and did not show any change.

"Okay, time to amp it up more." Lin Wu said as he now used fixity percent of his strength.

~DENG~

The barrier finally showed some effect and slightly flickered. Lin Wu could tell that while it had successfully taken the blow, it may not be able to take multiple of the same level attacks.

~DENG~

Lin Wu attacked it again and saw the barrier flicker once more. Knowing that this was not enough, he attacked again and again until the stability of the barrier started to reduce.

By the 20th attack, the barrier was barely holding up and the runes were flickering nonstop.

~Crack~

~shatter~

He raised his tail and attacked one last time before the barrier broke apart and faded away.

'Hmm… so it takes more than twenty attacks with half of my physical strength to break the barrier. I can get a good estimate with this, so let's try with spirit Qi now.' Lin Wu thought.

"System, create another barrier." Lin Wu ordered.

~shua~

Lin Wu used Qi amplification on his tail this time, which allowed the properties of Sapphire meridians to be activated. He only used a quarter of his strength at first as he had done in the first trial.

~DENG~

The effect was better this time as he could visually see the thing layer of spirit Qi passing through the barrier barely. While the barrier itself had not broken, the spirit Qi managed to extend beyond it, even if it was only a millimeter.

Lin Wu kept on hammering on the barrier and counted the number of attempts that were needed for it to break this time.

~Crack~

~shatter~

Finally, after fifteen attempts, the barrier was broken. But unlike before, when he needed half of his strength and twenty attempts to do so, he did it with only a quarter of it. This showed the effectiveness of the Sapphire meridians.

"Make another barrier system." Lin Wu ordered again, not feeling content yet.

~shua~

A third barrier appeared in front of him, and he raised his tail again. This time it was using fifty percent of his strength along with Qi amplification.

~Shatter~

The tail passed through the barrier like a brick through glass. There was little effort needed and Lin Wu couldn't help but feel impressed.

"If this is the effect at just the first level, then what would it be at second, third, or even the fourth level?" Lin Wu wondered to himself.

Lin Wu had just tested the effect of the sapphire meridians on one of the basic types of barrier formations of the Taiji Celestial tomb and knew that the results won't be the same with other ones. The likely thing was that as the grade of the formation rose, the difficulty in breaking it would increase as well.

"Well, this was the physical test, now for a Qi skill." Lin Wu said before getting ready.

The Qi skill he was going to use was none other than one that came with the Immortal Sky Shaker Art: Cloud Parting Gale. This was actually the first time he was even using a Qi skill that was part of a cultivation technique and was looking forward to learning more about it as well.

He raised his tail like Shirong would do to him in the spear form. The tail lit up in an emerald green glow as wind attribute spirit Qi swirled around it. Then Lin Wu swung it hard towards the barrier.

Immortal Sky Shaker Art: Cloud Parting Gale!

~Shua~

A different result could be observed now. Instead of breaking the barrier, the Qi skill passed through the barrier for about ten centimeters before fading away.

While this seemed like an underwhelming result, one must consider that a physical attack was only able to pierce for a millimeter. And it had still taken multiple attacks to break it with the amount of strength that Lin Wu had used.

When he used Immortal Sky Shaker Art: Cloud Parting Gale, Lin Wu had barely even used ten percent of his strength in terms of spirit Qi. This showed that the sapphire meridians' effect WA bests suited to Qi skills that were of energy emission type.

"Perfect, these two cultivation techniques work well in tandem. Once they are all at the peak level, I'm sure it will have a terrifying impact." Lin Wu exclaimed to himself.

~Ding~

But just as Lin Mu had finished testing the technique, he got a notification from the system.

"Oh? What's this?" Lin Wu muttered as a screen appeared in front of him.

On the screen, Lin Wu could see a few insect beasts standing outside the border of the Taiji Celestial's tomb. They were waiting anxiously and tapped their feet in nervousness. Lin Wu could even see that they had some things with them.

One of the insect beasts that looked like a scorpion was carrying a spirit beast in his pincers, while another beast that looked like a ladybug was carrying a bunch of fruits on its back.

"Ah, seems like they finally finished whatever tournament they were having amongst themselves…" Lin Wu said, before looking at the other insect beasts that were not carrying anything.

He narrowed his eyes and thought for a bit before activating the teleportation formation of the tomb.

"Bring them to one of the isolated halls, system." Lin Wu ordered.

~Ding~

——

TELEPORTATION FORMATION ACTIVATED: Targets selected

——

Then, to the surprise of the insect beasts, they suddenly felt their vision go blank for a moment before they appeared in a wide hall.