After slashing the cave sky, Yang Yu's face also turned pale, his throat was very sweet, and the blood was constantly surging, looking directly at Yang Yu as a ninja, not letting the essence blood flow out.

After three days of cultivation, relying on the essence left in his body, Yang Yu's qi and blood recovered, and his flesh and blood returned to the state of runes again.

However, Yang Yu has not recovered from the hidden danger of slashing the Cave Heaven, and he must wait for Yang Yu's body to adapt to the vague energy left after the Cave Heaven is slashed before he can cultivate the Cave Heaven Realm again.

This vague energy is like a thread, connecting Yang Yu and heaven and earth.

And Yang Yu slashed the cave sky, but this connection did not disappear, and it still took time for Yang Yu to wear it out.

And Yang Yu's next breakthrough can only start again after this energy is wiped out.

And at this time, it was only after a month that Yang Yu completely recovered, preparing to break through the Cave Heaven Realm for the third time.

At the time of the breakthrough, there was no cloud in the sky, only a round of scorching sun hung above the sky, and a slight breeze blew on this gradually awakening earth.

Yang Yu's heart was silent in his body, mobilizing the huge essence in his body, and at the same time, his perception of Dongtian became clearer and clearer.

"Boom!"

Like thunder in the clear sky, a loud bang resounded through the mountains, startling everything around them.

And above Yang Yu's head, a gray cave sky condensed again, and a majestic bright red essence rolled in it, and the divine essence between heaven and earth was also absorbed into the cave sky and turned into essence.

The terrifying absorption made the essence between the surrounding heaven and earth fade quickly, like an ice and snow smile under the scorching sun, visible to the naked eye.

"Boom!"

Immediately after, the second cave sky flickered out, the inner essence tumbled, and the surrounding area was like swallowing this chaotic qi, making the entire cave sky extremely sacred, like a silver moon under the clear sky.

"Bang!"

This time, two loud bangs like explosions sounded behind Yang Yu, and the two caves shone out at the same time, and golden essence gushed out from them.

Above Yang Yu's body, bursts of golden light surged, and the runes in the flesh and blood rang out in unison, matching with the flesh and blood, roaring together, the golden light continued, and the light around them was dim.

"Four Cave Heavens, a one-time breakthrough, it's very powerful!" Yang Yu smiled slightly and opened his eyes.

Breaking through the four caves at one time, Yang Yu is definitely a breakthrough that has never been seen before or since.

Breaking through three cave heavens at one time can already shock the world, not to mention that now Yang Yu has broken through four cave heavens at one time!

"Since you can break through four caves at one time, that is to say, it is possible to break through five or even six caves at one time!" Yang Yu's eyes flickered, looking at the four caves, and he was looking forward to it.

Maybe it won't work, but maybe there will be a shock?

"Let's try it, the last breakthrough before Liu Shen wakes up, how many times can I cut it before. Yang Yu nodded, five months have passed, and there is still time.

already had an idea, Yang Yu's cultivation level did not stop after that, and he had been slashing the Cave Heaven Realm and breaking through the Cave Heaven Realm for the rest of the period.

Nine months later, Yang Yu had already slashed himself seven times in the Cave Heaven Realm, but he had never broken through the Five Cave Heavens, each time it was four Cave Heavens, although each time it was a few points stronger, but it was still not satisfactory.

"There are still three months left, and I can still break through three times, and I will see if I can directly break through the five cave heavens by cutting the cave heaven twice!" Yang Yu's eyes were extremely bright, and he left the hidden place again and returned to the wasteland to cultivate, preparing to wear out the hidden energy this time.

At the same time, Yang Yu is still storing flesh and blood energy, preparing for the next few breakthroughs, the essence of gluttonous true blood through the consumption of this guy, there are already less than forty percent left, and more essence is needed for the three breakthroughs.

In the next three months, Yang Yu broke through twice again, and slashed the cave heaven twice, because one did not break through the five cave heavens, although the cave heavens that appeared seemed to have been transformed.

Yang Yu was still not satisfied, and was ready to break through again at the last time when Liu Shen woke up, that is, the last breakthrough.

Flesh and blood treasure medicine Yang Yu has been refining, and the gluttonous true blood Yang Yu has also taken it a few times, maintaining that there is still a lot of qi and blood essence left in his body.

After the time was up, Yang Yu returned to the hidden place, found a place, and sat quietly cross-legged to calm his mind.

After a long time, the qi and blood in Yang Yu's body began to surge, and all the essence in his body gushed out, and he began to help Yang Yu break through the Cave Heaven Realm and break through for the tenth time.

It is very quiet between heaven and earth, and you can faintly hear the rustling of leaves, and from time to time there will be a roar of beasts.

The insects chirped constantly, as if the whole world had become extremely gentle, and Yang Yu also seemed to fit in with the heaven and the earth and became a part of it, his face was calm and his breath was long.

"Buzz!"

After a long time, Yang Yu, who had been extremely calm, suddenly moved, or the world around Yang Yu shook.

With a vibration, a mouthful of cave heaven condensed from the top of Yang Yu's head, and the cave sky was still gray, with mysterious lines on it, which was extremely sacred.

However, in this cave sky, there was no bright red forehead essence, which was completely different from the previous cave sky, only countless gray essences surged, and then floated out a few points, sprinkled on the top of Yang Yu's head, and submerged into his body.

The essence was gray, and it was very mysterious in the cave, which also made the entire cave become different and more mysterious under this change.

"Buzz!"

Immediately afterwards, the second cave Tiancong appeared between heaven and earth, condensed beside Yang Yu, and quietly floated next to the first cave sky, which was also tumbling with gray essence, and the cave was gray and mysterious!

Immediately after, in the passage of time, two more caves appeared, rolling above Yang Yu's head, absorbing the essence of heaven and earth, and condensing the essence into Yang Yu's body.

And at this time, in Yang Yu's body, the essence of gluttonous true blood and the essence that had been stored during this period of time began to surge wildly towards Yang Yu's body, and then submerged into the heavenly spirit cover, as if it was about to gush out, and all the essence surged.

"Boom!"

There was an explosion between heaven and earth, and the essence in Yang Yu's body became clean in an instant, and there was nothing left, and in front of Yang Yu's head, next to the four cave heavens, a hole of cave heaven appeared again.

The cave sky is still gray, and there is a gray essence surging in it, and the four caves in front of it are the same, but it is a real cave!

Nine self-slashing cave heavens, plus ten breakthroughs, consuming the gluttonous true blood essence accumulated in his body for two years, Yang Yu broke through five cave heavens in a row.

And it also made the cave naturally qualitatively changed, gray and mysterious!