At this moment, the twilight is four, and the forest is filled with mist.

Song Xing unconsciously came to a dry forest, where fallen leaves were piled up, and the old vines with thick arms were hanging down densely, carrying mist, a barren and dilapidated scene.

"These trees are so old that they have grown for thousands of years, ten thousand years. Song Xing held his hand on a piece of black wood, which was covered with thick moss, but where they had gone before, and now they suddenly appeared again, this secret realm was really wonderful.

"Huh!"

Song Xing was surprised, this piece of black wood had decayed, and it shattered at the touch of a button, revealing a piece of white bones, with slender five fingers, which was clearly the palm of a person's hand, and at this moment, the sound in the forest suddenly disappeared, and a thick mist rolled in.

Song Xing was uneasy in his heart, turned around and left, the atmosphere here was too weird, especially the human bone palm, suddenly, a huge force hit his body, Song Xing snorted, and flew out directly.

Before he had time to turn around, a blue light rose and protected the top of Song Xing's head, followed by two fireballs flying out.

'Squeak' 'Squeak'

By the light of the fire, Song Xing got up and looked, and it was actually the old vines that were hanging down that were hit by the fire talisman, and the old vines couldn't help writhing and making sounds, rushing towards him as if they were alive.

Song Xing's scalp was numb, and he commanded the Qingling Sword to crush several old vines in front of him, revealing a hollow, and hurriedly flew out, but Song Xing didn't have time to be happy, and suddenly his body was light, and several old vines entangled him and pulled him back.

Song Xing only felt the wind whirring in his ears, the speed was extremely fast, and the old vine didn't know where he was pulling, and suddenly there was a 'plop', and he fell down with his sword.

It was pitch black all around, without a trace of light, Song Xing took a deep breath, got up quickly, and reached out to pop out a fire talisman floating in the air, it seemed to be a small hole, there was no exit around, and it had been sealed.

Song Xing came to the edge, his hand touched the wall, the ashes were fluttering, like some kind of tree body, Song Xing's heart moved, thinking of the hand bone in the black rotten wood, wouldn't this be how it came?

"It's too weird here, so it's better to leave early. "Song Xing's back is cold, and he uses people as nourishment, which is also too strange and terrifying.

Song Xing continued to look for the exit, and suddenly felt a foreign object under his feet, looked down, Song Xing gasped, only to see that his feet were densely packed with white bones, it turned out that this was the case, the old tree used living people as nourishment, where did he dare to hesitate, Song Xing hurriedly chose a place at random, manipulated the Qingling Sword to emit a spiritual light, and slashed down.

With a 'ding' sound, the Qingling Sword flew upside down, the wall of the tree seemed soft, but it was very strong, and the spiritual light split on it, leaving no trace at all.

"This ......" Song Xing was stunned, the Qingling Sword is a mid-level magic weapon, the Qingling Sword can't split the tree wall, Song Xing has no other way, there are still spirit runes left in the storage bag, but if you use spirit runes, such a small space, I am afraid that I will be blown up in it before I blow up the tree wall.

"Well, how do you feel dizzy......" Song Xing, who was thinking, suddenly raised his head and found that the tree wall actually began to rise and fall, as if breathing like a person, and the tree wall began to secrete a faint green mist every time he breathed, Song Xing accidentally inhaled it, and instantly became dizzy, this fog was so powerful, Song Xing suddenly felt even more bad.

Taking a few steps back, Song Xing used his aura to form a red shield, but the green mist actually ignored the shield's defense and directly entered Song Xing's body.

Song Xing was shocked, and hurriedly looked inward at his body, only to see that these green mist combined with his own aura along the meridians, and then began to devour.

"Get out. Song Xing snorted coldly, and was about to run the spiritual energy to resist, but the meridians were blocked by the green mist, and the spiritual energy could not work, Song Xing felt that his mind was becoming more and more dizzy, and in a daze, Song Xing felt that the stone core in his body began to purify the spiritual energy again, and he finally couldn't hold on, and fell asleep.

I don't know how long, when Song Xing was able to open his eyes, he saw a ray of light, the sunlight shining from above the tree, just shining on his face.

Song Xing hurriedly got up, the white bones on the ground were still hideous, but the tree wall was not secreting green mist, and Song Xing felt a surging aura in his body to make a big Zhou Tian run on its own.

Song Xing's heart moved, looking inwardly at the dantian, he had not broken through the realm for a long time, and he didn't know when he had reached the fifth layer of qi refining, Song Xing was shocked.

He touched his chin and thought, originally the stone core would not take the initiative to absorb the aura from the outside world, which he had done many experiments, it should be this green mist that ran into the body by itself, wanting to devour the aura, but he didn't expect to be purified by the stone core as aura.

No matter how it is, since it is inexplicable to break through the fifth layer of qi refining, it is always a good thing for Song Xing, and after returning to the sect, he can enter the inner gate to cultivate, but he doesn't know what realm the number of purified five-layer aura refining is equivalent to, but looking at the empty dantian, Song Xing smiled bitterly again, the task of the sect has not been completed, and now he has to think of enough spirit stones needed to promote to the sixth layer of qi refining.

"But if you find more spirit grass, you should be able to exchange it for a lot of spirit stones. Song Xing's eyes flashed, and he felt the aura in his body, and he was full of confidence, "I don't know how long it has been, so I'd better leave here first." ”

Song Xing waved out a spiritual light, he wanted to try the aura of the fifth layer of qi refining, but he didn't expect to directly penetrate the tree wall this time, and then Song Xing found that the tree wall had turned gray and white, and the wood had fallen.

Song Xing touched his chin, thoughtful, it should be the reason why the aura in this old tree's body has been absorbed.

Ignoring it, his figure flashed, and Song Xing appeared outside the tree, the sunlight was a little dazzling, but Song Xing was happy, exhaled a breath of turbidity, and finally came out.

This should be the edge of the tree boundary, where a few old vines hang down, and not far away is a pile of rubble, bare without a trace of weeds.

Song Xing glanced at it, and was about to leave, suddenly, his body shook, dodging a black shadow that shot out, and when he appeared again, there was already a fist-sized bat in his hand, this bat was as black as ink, and his face was extremely vicious, a pair of fangs turned out, struggling in Song Xing's palm, biting his fingers, Song Xing snorted coldly, used his spiritual power, and the fire flashed, and the black bat immediately turned into a pile of ashes.

Song Xing's brows furrowed slightly, this black bat was a little weird, and wisps of black smoke came out of the corpse.

"Who is it, the treasure who dares to hurt the old way?" At this time, a rolling sound came from the pile of rocks, and a figure flashed, and an eyebrowless Taoist priest wearing a black robe and a red silk ribbon tied around his waist flew out.

The Eyebrow Daoist stood on the gravel, holding the dust in his hand, staring at the ashes at Song Xing's feet, and said angrily, "You killed my baby?"

"It was this black bat that attacked me first. Song Xing glanced at him, this eyebrowless Taoist cultivator has a seventh-level cultivation of qi refining, but a pair of thin eyes without eyebrows, braving the cold light, which is extraordinarily infiltrating.

"Hmph, what are you, an old spirit pet, even if you eat it, you should be. The Eyebrow Daoist said in a domineering tone, and he was even more disdainful when he saw Song Xing's cultivation at the third level of Qi refining.