However, Cheng Yun also discovered that the blue crystal ball could not allow the two of them to leave Yunni Tianyuan directly and return to Ziyun Academy.
Because the anchor of this world is in the abyss of clouds, mud and heaven.
Cheng Yun smiled and comforted him, "As long as we go back within half a year, it will be fine."
"I have a lot of fasting pills on me, which can support me for half a year."
Zi Lianyi understood what he meant and nodded, "Then let's practice first to improve our strength, then explore the surroundings and find a way out."
"That's right."
Zi Lianyi took out two Yin-Yang disks and strengthened the surrounding concealment formation.
The two began to practice with peace of mind.
Cheng Yun practiced the Heaven and Earth Burning Sutra at full speed to refine the Taotie blood flame.
As the sub-flame in the first floor of the Xutian Tower continued to grow stronger, Cheng Yun's physique and Qi training skills also improved day by day.
Zi Lianyi was also digesting the various pills given by Zi Qiankun, and her cultivation speed was not slow either.
From time to time, the two of them would have a conversation to relieve their boring mood.
But happy times are always short-lived.
Half a month passed in the blink of an eye.
Cheng Yun's Qi training has reached the peak of the middle stage of the Starlight Realm, and his body training has also reached the peak of the seventh stage of the Immortal Realm.
On this day, the two had just finished their training and were planning to have a discussion.
Suddenly, a dragon roar was heard.
Both of them were startled and immediately held their breath and became alert.
Cheng Yun pressed his ear against the cave wall.
Soon I noticed a hurried sound coming towards me quickly.
"Southwest, about one hundred and thirty feet!"
Cheng Yun transmitted his voice, "It's not an ordinary quadruped, it should be a dragon."
At this moment, with a loud roar, the entire cave was shaking, and broken stones on the cave wall fell like rain.
In an instant, a layer of pale yellow light appeared in the entire cave, as if it was dusk.
This also made the mysterious dragon approach faster.
The sound of rapid movement was like someone running for their life.
In just a few breaths, the dragon covered with dark purple scales appeared in the sight of Cheng Yun and the others.
Zi Lianyi's expression changed slightly as she whispered, "This is the king of dragons, the Void Dragon. It naturally masters the power of the void, and its aura resembles that of someone at the peak of the late Earthly Demon Realm."
At this moment, Cheng Yun's nose twitched, and he shook his head and whispered, "It smells of blood and has a wound on its abdomen. It must have dropped in cultivation."
Then, the damn Void Dragon lay motionless on the ground ten feet away from the two of them.
This left Cheng Yun and the others speechless.
You probably can’t win by fighting!
This Void Dragon was at least a powerful demon in the Tiangang realm before.
Unless... a sneak attack.
However, doing so is somewhat risky.
If you don't kill the opponent, you will probably be killed by the opponent.
"Wait for it to leave!"
Zi Lianyi transmitted the message:
Cheng Yun nodded in agreement.
In the following time, neither of them dared to enter the state of cultivation. Instead, one of them was alert to the Void Dragon not far away, while the other rested, and they took turns in this manner.
The invisible confrontation put a lot of pressure on both of them.
Noticing that the Void Dragon's breath was slowly recovering, the two became even more anxious.
If they really had to wait until the other party recovered to the Tiangang realm, the two of them would probably have no chance at all.
Just when Cheng Yun was considering whether to put Zi Lianyi into the Xutian Tower and then return to the fairyland, or take a risk and fight, something strange happened.
Inside the cave, the dim light suddenly became brighter.
Cheng Yun and Zi Lianyi didn't find anything strange, nor did they sense any danger.
But the Void Dragon was inexplicably uneasy and extremely terrified. It rushed straight towards Cheng Yun and the others, intending to occupy this corner.
Cheng Yun and the others were immediately terrified.
Almost at the same time, the cave wall above the head of the Void Dragon quickly became brighter, and was then directly melted through by an unknown force.
A pale yellow light dot the size of a bull's eye fell down.
This light spot was very strange. It only emitted a faint yellowish light, without emitting any heat, nor did it give Cheng Yun and the others any sense of danger.
But it frightened the Void Dragon.
At this time, Cheng Yun and the others also clearly felt that something was wrong.
The cave walls here are extremely solid and difficult to break with knives and axes, but they are easily melted through by this pale yellow light.
Zi Lianyi recognized it and said in a voice transmission with great horror, "It's the embers of the Final Extinction Flame!"
"On the Heaven and Earth Spiritual Fire Ranking, the second-ranked flame has the power to destroy heaven and earth!"
Just as the Void Dragon twisted its bloated body and struggled to get closer, Cheng Yun and the others took action.
"True Yang Collapse Mountain Fist!"
Cheng Yun pushed his feet against the ground, and as the force of the earth rebounded, he quickly twisted his waist and hips, combining all his strength with the recoil force and delivering a punch with twice his own strength.
Bang!
The sudden punch hit the jaw of the defenseless Void Dragon directly, sending its entire body flying backwards.
As the scales shattered, drops of blood spilled.
At the same time, Zi Lianyi formed seals with both hands and pointed out with his sword finger.
The Yin-Yang disk glows.
The pure yang power that Cheng Yun deposited on it and her pure yin power were activated at the same time, turning into a powerful magic power, and performing the dragon-slaying technique.
In an instant, the Yin-Yang Disk began to spin, and silk threads flew out, penetrating into the wounds on the Void Dragon's jaw and abdomen.
Then, sharp sword energy burst out from under the skin of the Void Dragon, ignoring his scales and armor, madly cutting his flesh, bones, and even internal organs.
Blood mixed with broken flesh gushed out from the wound.
The sudden change caused the Void Dragon to scream and fly towards the pale yellow light.
Sensing the unstoppable approach of the embers of the Final Extinction Flame!
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