"Whew! It's not a good road. The four of them walked for nearly twenty minutes, and finally came to the legendary Wanshan Mental Hospital.

"It's still a little cold in the mountains."

It was Yuheng and Yuqin's junior brother Yushuang and Yulong's senior brother Yuhua who spoke.

"No, it's several degrees lower than the city." Yushuang rubbed her hands together, then looked up at the dilapidated three-story building in front of her.

The building they saw now was only used for the patients in a psychiatric hospital, and there was a small two-story building on the side for the office of doctors and nurses.

"Senior brother, let's just go in like this?" Yulong asked Yuheng.

Yu Heng shook his head, "Let's take a look around first." ”

The four of them divided into two groups and walked around the mental hospital, and found that there was nothing wrong around, and this was not a murderous place, and it would not provoke any ghosts and wild ghosts for no reason, it can be said that although the yin qi here is very heavy, there is nothing dirty.

"No, senior brother, it's very clean here, how can there be dead people for no reason?" Yulong looked at the compass in his hand and said to Yuheng.

"It's really strange...... Yu Heng frowned and looked carefully at the two buildings in front of him, there was nothing unusual about these two buildings.

"Senior brother, do we still want to go in? I always feel that this place is a little weird, but I can't say it, so let's call Uncle Shi here. Yulong pulled Yuheng's clothes.

A few of them came to look for excitement with Yin Que on their backs, Longhu Mountain is a place of cultivation, there is no entertainment at all, these people finally have the opportunity to come out to play now, naturally they will not let go of such an opportunity to explore, but they are afraid that Yin Que will not agree, so they have to sneak out.

"It's okay little junior brother, there will be no danger, we are all from Longhu Mountain." Yushuang patted Yulong and said.

"Oh." Yulong nodded.

"Let's go inside." Yu Heng stared at the building in front of him for a while, and then said.

Squeak~~!

Yu Heng pushed open the big iron door of the mental hospital, because this place has been abandoned for a long time, the iron door is very rusty, and when it is pushed open, it seems that someone is shouting in pain.

Call~~!

At the moment of opening the door, the four of them felt a cold wind blowing at the same time, and the fallen leaves on the ground swept in front of everyone, like animals scratching a wall.

"Be careful, there's something wrong with that gust of wind just now." Yu Heng walked in the front, and he felt that the gust of wind just now came too suddenly.

"Okay, senior brother, how can there be so many wrongs, this is not making a movie." Yushuang said disapprerovingly.

"I think what Senior Brother said is good, let's be careful, the aura here is a little chaotic, it's really strange......" Yuhua, who said very little, spoke at this time, he was the one with the best perception among the four, although he usually doesn't like to talk, but he is very reliable.

"Since Senior Brother Yuhua has said it, then let's be careful." Yulong followed at the back of the line with the compass.

Although the aura here is very chaotic, Yulong's compass is not spinning, and the pointer is still intact, which means that although the aura here is chaotic, it is still within the controllable range, otherwise the compass would have warned a long time ago.

The compass in Yulong's hand is not an ordinary thing, although it is only the size of an adult's palm, but it is indeed a real magic weapon, which is refined by the magic weapon master of Longhu Mountain, his Taoist number is very strange, and the person is also very strange, often living in a simple place, and has been guarding a furnace to refine magic weapons, and all the magic weapons of the disciples of Longhu Mountain are refined by him and his disciples.

The process of making a compass is very complicated, because the compass must be accurate, and even a slight deviation will have incalculable consequences, so there can be no mistake in the production, otherwise the compass will lose its utility and become a waste product.

First of all, the needle of the compass must be hand-ground with a metal with a strong inducing magnetic field, and the pointer must be straight, and it must not be used if there is a trace of skewness, and it is not available if it is too thin or too late, otherwise it will deviate from the induction of the magnetic field.

Secondly, the red line of Tianchi must be straight to the north, and there can be no skewed, and when the red line is pointed at, the south side must be opposite to the noon of the heavenly stem, and the other side must be opposite to the sub, without the slightest deviation.

Thirdly, the needle of the compass must rotate flexibly, and there can be no poor rotation or jamming, otherwise it is difficult to accurately judge the magnetic field.

Finally, the compass should be made of wood, because the metal will isolate part of the magnetic field, which will cause some errors in the compass.

Wood does not have this drawback, but it is necessary to ensure that the wood material is dry, and the rules will crack and deform, even if the cracking or deformation is very small, or even invisible to the naked eye, but it is enough to affect the accuracy of the compass.

And when choosing wood, it should also be noted that the compass made of the more expensive wood is not the better, because the wooden compass in order to make it more durable, so there are few words engraved on the compass, and the words are written on the compass with a pen, so when choosing wood, you must choose the wood that the ink can penetrate up and down, if it is the wood that penetrates left and right, then the written word will become an ink spot, so that the compass will be wasted.

Yulong's compass material is made of fine ginkgo wood, ginkgo tree is not a precious wood at all, and even the streets are all over, but it is indeed a good material for making a compass, ginkgo wood is the wood that penetrates up and down, and the ink can last for a long time, and the most important thing is that the texture of ginkgo wood is strong enough, and there is no problem with it for hundreds of years if it is properly maintained.

Straight to the point.

The four of them walked into the mental hospital one after another, and there was nothing else in the courtyard except for the fallen leaves, not even a mouse, you must know that the mouse is an animal with a very strong sense of aura, and the absence of mice here means that there must be something strange here, and the mice are reluctant to come in.

In the corner of the courtyard there was an open space the size of two basketball courts, surrounded by barbed wire, and a lot of exercise equipment was faintly visible, which seemed to be a place for patients to let off steam, but now it was dilapidated, and it was covered with dirt and dark red rust.

The four of them were the first to walk into the two-story office building, which was only a building with only the body left, and the doors and windows had long since decayed.

Click~~!

Yu Heng stepped on a shard of glass, making a crisp sound, and then the four of them continued to walk inside.

Facing the gate is a wide staircase, and on the left and right sides are long corridors, the atmosphere around is getting more and more weird, there is no sound around at all, and as Yu Heng stepped on the broken glass, the surroundings became even quieter, and even the sound of insects disappeared unconsciously.

"From now on, be careful, it's definitely not easy here." Yu Heng frowned.

Everyone could vaguely see the surrounding area of three or four meters through the moonlight, but this infinitely magnified the strange feeling.

Call~~!

A pale yellow light suddenly appeared, and then suspended not far above Yu Heng's head, it was the Light Spell.

The warm aura of the Light Charm relaxed the four of them a little, and they first walked towards the corridor on the left.

There was no end in sight to the long corridor, and the four of them could see clearly on both sides of the corridor with the blessing of the Light Charm.

They pushed open the first door first, and strangely enough, from the outside of the building, the doors and windows were rotten and even gone, but the door to the corridor was still intact, but it looked very dilapidated, as if it had been burned by fire. ……