Du Mu tried a few more times without giving up, only to find that the light film would only appear when he was about to break the door violently, blocking his attack.

The rest of the time, he could touch the iron door without hindrance.

After several attempts, Du Mu couldn't help sighing, and reluctantly gave up the idea of a violent solution.

He then looked closely at the iron door and found a keyhole on it.

"Can it only be opened with a key?" Du Mu groaned for less than a second, his eyes lit up, he turned around and went to the guard's body to search carefully, and stopped in disappointment after a moment, "Not on the guard?"

So he went back to his room and searched again, but found nothing.

"It's not in the room either, so where the hell is that?"

Standing in place and thinking for a long time, Du Mu finally raised his head and looked at the dense cells on both sides of the corridor, his eyes flashing.

"Maybe the keys are in these cells?"

Just in case, Du Mu carefully searched all the locations in the entire prison, except for those closed cells, including the room where he appeared at the beginning, but unfortunately he still didn't find anything suspected of being a key.

"Looks like the key is in a cell. Du Mu clapped his hands.

While searching just now, he also found out the terrain of the prison.

The entire prison is roughly in a hollow shape, and the long corridor is lined with cells on both sides, about a hundred, and in each room lies a skeleton.

And the iron gate is at the end of one of the corridors.

Starting from the long corridor where the iron gate was located, Du Mu prepared to search the past from cell to cell.

Reaching the door of the first cell, he slashed the chains wrapped around the fence door with his sword, pushed open the door and entered.

There was a shrill crunch, and a lot of dark red rust was shaken off.

The skeleton in the cell seemed to have been awakened, and slowly raised its head, and two red lights lit up in its hollow eyes.

Du Mu had expected it, and he was not surprised to see this, so he concentrated his eyes and looked, and a line of text slowly appeared in his field of vision.

'Nightmare: The Corrupted'

'Combat Strength: 500'

Awakened from its slumber, the Decay struggled to sit up from its bed, its movements as slow and clumsy as that of an old man, and the comical clattering of bones.

However, seeing this scene, Du Mu not only did not laugh, but his eyes narrowed, and his heart became more and more vigilant.

He'd seen the weirdness of nightmare creatures many times, and the more ordinary-looking things like this, the trickier it might be.

What's more, the combat power is there, Du Mu doesn't believe that the other party will be as harmless as it seems.

Out of the purpose of wanting to collect information on the corrupt, Du Mu did not stop the former's actions, but watched it take more than ten seconds to get out of bed with difficulty.

The moment his feet stepped on the floor, the Corrupt Man tugged at his arm, and heard a clatter of stones cracking, and the chain head that had been nailed to the wall was torn off by it, leaving a hole and a large crack in the wall.

Then, with a shake of the Corrupt's arm, the chain that had fallen to the ground suddenly jumped up, straightened, and fixed into a long strip, and in the blink of an eye it became a weapon similar to a short spear, the head of which was the thick nail that held the chain in place.

Du Mu watched coldly from beginning to end, until the Corrupt Man made a move, not only was he unrestrained, but he also had a weapon, and then he put on a fighting posture.

With the chain spear in hand, the momentum of the corrupt changed abruptly, and in an instant, a chill filled the narrow cell.

Under the invasion of energy, the flames suddenly shook in the oil lamp hanging from the ceiling, and even the shadow of the corrupt person shook with it, and then it quickly lengthened.

Suddenly, there was a piercing scream from the cell.

However, it was the Corrupt One who took advantage of this moment to burst out with an astonishing speed, and in the blink of an eye, he jumped up to Du Mu, and the chain spear in his hand tore through the air and stabbed him in the face.

Seeing this, a sneer flashed on Du Mu's face, and the long sword poisonous snake bit and slashed out horizontally, first slashing the short spear that stabbed at the point, followed by the lightning and stone fire, and the second blow hit the chest of the corrupt person behind it, knocking it out fiercely.

There was a slight click in the air, but it was the Rotten One who had eaten a snake devour, and the sternum cracked many cracks at once.

Receiving this heavy blow, the corrupt person was unconscious, adjusted his posture in mid-air, and landed firmly at the head of the bed, and with a slight pick of the chain short gun, the quilt on the bed jumped up suddenly, and covered Du Mu with a bang.

This scene made Du Mu raise his eyebrows, his long sword was cut out, and he was about to split the quilt in two, when he suddenly heard a cracking sound of glass cracking, his heart jumped, and he didn't hesitate to shave it directly and left the place.

Crash!

The lamp oil fell on the quilt in mid-air with the flames, quickly igniting the entire quilt, turning into a huge fireball and slamming into the half-open fence gate.

The cell was filled with heat in an instant.

Next to the bed, the skeleton was armed with a chain spear, ready to strike a fatal blow, but was surprised to find that the enemy had disappeared in place, and could not help but be stunned.

In the next second, a star-like sword light suddenly lit up behind it, and five bright and sharp cold lights hit its back almost in no particular order, tearing it to pieces fiercely in the sound of bones shattering.

The sword light faded, and a large number of bone fragments fell to the ground in mid-air, revealing the figure of Du Mu behind him.

Call!

Du Mu exhaled lightly and glanced at the broken bones on the ground in surprise.

The Corrupt One's instantaneous combo just now was really beyond his expectations, and he actually knew how to adapt measures to local conditions, threw the quilt at him, and at the same time used the quilt to block his vision, he brazenly broke the oil lamp on the ceiling, intending to ignite the quilt and launch a fire attack.

This series of counterattacks was completed in one go, and it was the first time he had encountered such a cunning nightmare creature in battle, which was in stark contrast to the previous stupid ones who only had a fixed attack pattern.

"This dream area is really a little different, so you need to be careful not to capsize in the gutter. ”

A moment later, the bone fragments on the ground turned into gray smoke and submerged into Du Mu's eyebrows, contributing 1 nightmare energy.

"Luckily, the combat power of 500 happens to be D+, and it's almost not at the same level as me. ”

Picking up the coins on the ground and putting them in the dimensional room, Du Mu turned his head and searched around the cell, but unfortunately he didn't find anything, so he had to leave and come to the door of the second cell.

Just as he was about to re-use the old technique to break the chains, his heart suddenly moved, and after thinking for a few seconds, he summoned Xiao Jiu with the condensation of Gray Dream.

"Xiao Jiu, you go to the opposite room, get rid of the skeleton monsters inside, and then find out if there is anything suspicious of the key. Du Mu pointed to the cell on the opposite side of the corridor and instructed Xiao Jiu, "Be careful, these guys are very cunning. ”

Xiao Jiu bowed his head lightly and walked to the other side without saying a word.

Du Mu glanced at it and then withdrew his gaze.

The speed of his search alone is too slow, and if he asks Xiao Jiu to help, he can improve his efficiency.

Anyway, Xiao Jiu's combat power is now approaching 600, which is even better than the Corrupt, so it shouldn't be too difficult to deal with.

Cutting the chains, Du Mu stepped into the cell, and this time he didn't wait for the Corrupt to get up, he directly drew his sword and slashed it.

Unexpectedly, the Corrupt Man reversed his original slow speed, and while quickly getting up, he pulled his arm hard, and even shook the iron nails on the wall directly, and smashed them at him with chains, and the force was so great that it caused a piercing scream in the air.

"Dare Qing was acting just now. ”

The corners of Du Mu's mouth twitched, ignoring the fast-moving chains, stepping on his feet, and instantly moving behind the Corrupt One, without waiting for it to react, he slashed its head with a sword, ending the battle.

At the same time, D+ level, but the strength of the Corrupt is more than a step worse than him, and it is only a matter of a moment to break out with all his strength.

In order to speed up, in the next battle, Du Mudu used the shaving to teleport to its side without waiting for the corrupt to prepare his weapon, and simply slashed with a sword, and then immediately searched the cell, and then went to the next room if not.

It wasn't until he came out of the cell after searching the fourth room that he suddenly felt a trance in front of him.

"Is it time? It's too fast, I haven't found the key yet. Du Mu looked at Xiao Jiu, who had already killed the Corrupt and was searching the second cell.

Seeing that his vision was gradually filled with darkness, Du Mu hurriedly drove his mind and turned Xiao Jiu into gray smoke and returned it to his body.

......

Sitting up from the bed, Du Mu looked out the window, the sky was just bright, the school road outside was quiet, and only a few figures passed by.

After being stunned on the bed for a while, Du Mu summoned Xiao Jiu, condensed the gray dream silk thread for her to absorb, and then ran to the bathroom to wash.

After these days of testing, Du Mu roughly understood the connection range of Gray Dream, which was about a circular range with a radius of one hundred meters centered on him, and it was also the limit range that Xiao Jiu could absorb Gray Dream.

The range is not small, it has covered the entire dormitory, but it is not long in a straight line, Xiao Jiu can't even leave him a hundred meters for activities, there are too many restrictions.

"But when Gray Dream rises a few more levels, the limit distance should increase. ”

Du Mu brushed his teeth and thought at the same time.

It's a pity that the fog in the three old dream areas has all been absorbed, and the danger of the new area is unknown, so he doesn't dare to let go to absorb the fog for the time being, so that the growth of Gray Dream's experience value has come to a standstill.

"Well, it's better to speed up the exploration. ”

Coming out of the bathroom, Du Mu asked Xiao Jiu to prepare breakfast, and he went to the living room to practice the Bailuo breathing method.

It was only at this time that he deeply realized the great convenience that a good gray servant brought in life.

......

Time flies.

In the dream, Du Mu and Xiao Jiu continued to search for the key, searching an average of six or seven cells every night.

Unfortunately, the number of cells in the cell was too large, and after more than ten days, the two searched almost 80 cells, but still could not find the items suspected of being keys.

In reality, at this time, the second semester has finally begun.