Chapter 613: One Line of Heaven and Nine Heavens

"good."

Yun Yi's eyes sparkled and his aura surged. He turned into a sharp sword and rushed into the sea of ​​​​fire in front of him. With one sweep of his sword, he directly cut the tree demon in half.

A tree demon king at the first level of demon king was killed by Yun Yi so easily.

After killing the tree demon king, a demon spirit was picked out by Yun Yi with his war sword. This tree demon has long since become a spirit, and the demon spirit is naturally extremely pure. All the essence of the wood spirit is in the demon spirit.

Yun Yi waved his hand, and the nine fire dragons disappeared.

At the moment when the Dryad King was killed, other Dryads in the entire valley became extremely quiet and stood there motionless. If they had not experienced what happened before, they would not be believed to be Dryads at all. Just the most ordinary trees.

However, Yun Yi was too lazy to pay attention to these tree demons. What he was most interested in now was the demon spirits in his hands.

After refining the extremely rich wood spirit, the cultivation level is directly promoted to the ninth level of the first line of heaven.

For Yun Yi, nothing is more important than improving his cultivation level. There are too many masters entering the ancient city space this time, and he has many enemies, and his life is in danger at any time. Only by constantly improving his cultivation level can he It's the only way to protect yourself.

What's more, if you don't make progress, others are likely to find their own opportunities to make progress again. In this case, the enemy is strong and we are weak, which is even more terrifying.

The aura of heaven and earth in the ancient city is so rich, and there are many strange treasures and treasures. You never know who will be promoted and when. According to Yun Yi's estimation, during this trip to the ancient city's space, the younger generation of Donghuang will at least be able to give birth to more. There are more than a hundred spirit kings.

Yun Yi didn't hesitate at all and swallowed the demon spirit in his hand.

The moment the powerful wood spirit entered the body, it was swallowed by the green lotus on the nine-path lotus platform and transformed into its own energy.

The energy essence contained in a Spirit King is undoubtedly very huge.

Under the impact of the huge wood spirit, Yun Yi's difficult barrier was instantly broken, and his cultivation directly impacted the ninth level of the first line of heaven.

A large number of spiritual stones were refined and absorbed by Yun Yi, and Yun Yi's cultivation quickly stabilized at the level of the First Line Heaven and the Nine Heavens.

"Haha, the ninth level of Yitiantian is really extraordinary. With my current strength, the average first-level spirit king can be killed almost instantly. Even against the second-level spirit king, it is no problem. Of course, if I want to deal with a second-level spirit like Tianzong, Wang Tiancai is still far from enough.”

Yun Yi laughed loudly and hit the ninth level of the sky, allowing him to try the powerful feeling again.

However, despite being promoted, Yun Yi still has a more troublesome problem, and that is spirit stones.

The spiritual stones needed to advance to the innate Taoist body were too terrible. He was like a vampire. He was originally rich, but he couldn't withstand such consumption. Fortunately, he had accumulated enough before, which was enough for her to be promoted to the spiritual king. But after the Spirit King, the consumption required for each promotion will definitely be greater.

"If you have the chance, you still need to accumulate spiritual stones, so that you won't be anxious because you don't have enough spiritual stones when you advance."

Yun Yi said.

However, the issue of spirit stones can only be discussed later, and there is no need to think too much about it for the time being. After all, it is not easy to be promoted to the spirit king. There is still no way to know how long it will take.

Yun Yi doesn't expect too much. When he leaves the ancient city space, it will be good if he can improve his cultivation level to Spirit King.

"Boy, have you noticed that the environment in this valley is very abnormal."

Black Wind asked suddenly.

"Yes, in fact, I fought with the Dryad King and used the Nine Suns Burning Heaven Technique, which almost evaporated the cold air here and raised the temperature. But now, the cold air in the valley has filled up again. It’s bone-chilling, where does this coldness come from?”

Yun Yi frowned. Heifeng said that he also noticed that the cold air here was the most extraordinary place in the valley.

"Where are you looking?"

Heifeng's eyes were as bright as a sword, and he looked at the place where the Tree Demon King had been. Although the Tree Demon King had been destroyed, it was still covered with vines. If you didn't look carefully, you wouldn't be able to see anything unusual.

But now if I look carefully, behind the vines, there seems to be a space, or a cave.

Yun Yi's curiosity revived and he moved towards it. The closer he got, the colder the cold air became.

"The cold air is coming from inside."

Yun Yi's expression changed, and he discovered the reality of this valley.

"That's right, the cold air here is obviously stronger. The invisible cold air is constantly coming out from inside. There must be a secret in it, maybe it is a rare treasure."

Black Wind's eyes lit up.

"It might be a piece of ice soul that lasts ten thousand years. If so, you will make a fortune, haha."

Yun Yi laughed twice, with a fiery light shining in his eyes.

"Let's go in and take a look before talking."

Heifeng said, anyway, the tree demon king has been eliminated, and there will be no other dangers in this valley.

Yun Yi strode forward and waved his hand to destroy the vines blocking the entrance of the cave.

hiss!

The violent cold air poured out from inside, making Yun Yi and Heifeng couldn't help but shiver again.

Yun Yi looked around and concluded that there was a treasure inside, and strode towards the cave.

Perhaps due to the cold air, the cave was not dark at all, but instead extremely bright and dazzling.

However, the cold inside the cave was so great that the air was about to freeze.

Once here, even a spiritual practitioner from the First Line Heaven and the Nine Heavens may not be able to withstand the invasion of the cold air, so we must evacuate quickly.

Yun Yi relied on his innate Taoist body and strong physique to ignore the invasion of cold air and stride forward.

In a short period of time, Yun Yi walked about ten feet, and the intensity of the cold air almost doubled.

"It's too cold here. It's abnormally cold."

Yun Yi began to frown.

"I dare to conclude that it is not a ten-thousand-year ice soul. Even a rare ice soul, or even an ice soul, cannot emit such a strong cold air."

Black Wind also started to frown.

"Heifeng, can you feel the presence inside?"

Yun Yi asked.

"No, but I didn't feel any danger. Since I've come here, I naturally have to go in and find out. Otherwise, you won't be willing to do it."

Black Wind said.

"You're right. We've come this far. If we don't see what it is, we won't feel at ease even if we leave."

Yun Yi's curiosity aroused. It was impossible to give up halfway at this time, so he could only keep moving forward.

Moreover, the rich cold air here is also beneficial to Yun Yi. Under the automatic operation of the innate Tao body, these pure cold air are sucked into Yun Yi's body. Under the transformation of the Nine Paths Lotus Platform, it can become pure energy. He absorbs.