The door of the small room was also made of iron, but it had only an ordinary door lock. Li Kui stepped forward and chopped the lock open with an axe.

The room was not big, with only a simple desk, a chair, and a half-person-high iron safe against the wall.

There were some documents and account books scattered on the desk, as well as half a bottle of cheap liquor.

"That instrument was taken out from this safe." Jin Dongdong pointed at the metal safe.

Lu Shiyan's eyes fell on the safe. This old-fashioned metal safe should not be a problem for Jin Dongdong.

Jin Dongdong did not disappoint him. He took out a small tool and operated the keyhole. With a "click", the door of the safe opened.

There are only two compartments in the safe.

"Where is the secret compartment?" Su Wan asked.

Jin Dongdong pointed to the inner wall of the safe: "I remember it's at this position." He knocked on the inner wall with his fingers, making a dull sound.

Lu Shiyan stepped forward and carefully observed the inner wall. After a moment, he reached out and gently pressed on an inconspicuous corner of the inner wall.

There was a slight "click" sound, and the inner wall actually sank inward, revealing a secret compartment about 20 centimeters square.

There is a combination lock on the secret compartment. Su Wan asked, "There is a combination, Dongdong, can you open the combination lock?"

Jin Dongdong is observing, I try, it's hard to say, finally successfully opened. Su Wan couldn't help but secretly thought that he was worthy of being the top scorer in the college entrance examination,

In the secret compartment, there lay a black velvet box and something wrapped in oilcloth that looked like a book.

Su Wan's heartbeat quickened. The metal detector vibrated more violently in her hand, the baseline on the screen jumped violently, and the beeping sound became more rapid.

Lu Shiyan first picked up the velvet box and opened it.

Inside the box was a fist-sized crystal stone, which was a strange dark purple in color. A faint halo flowed on the surface, emitting a heart-pounding energy fluctuation.

"This is..." Su Wan's eyes widened. This crystal gave her a very familiar feeling. It was somewhat similar to the energy stone, but the color and energy it emitted were completely different.

That energy stone was pure, but this dark purple crystal stone had a weird and violent aura.

"A top-level mutant crystal core." Lu Shiyan's voice was solemn, "Moreover, it is an extremely rare spiritual mutant crystal core."

Psychic mutant crystal core? Su Wan's mind moved. This kind of crystal core can enhance mental strength and even have a chance to awaken mental abilities. In the last days, people with mental abilities are as rare as phoenix feathers and unicorn horns, and each one has inestimable value.

No wonder "Black Wolf" treasures it so much.

Lu Shiyan closed the box and handed it to Su Wan: "Put it away."

Su Wan nodded and put the box into the space. She could feel that the space seemed to have some desire for this crystal core.

Then, Lu Shiyan picked up the thing wrapped in oilcloth. After unwrapping the oilcloth, he found a thick notebook inside. The cover was a bit worn, and there were a few crooked words written in pen on it - "Notes on Survival in the End of the World".

Su Wan leaned over and saw the first page of the notebook read:

"On X day of X month of X year, the world changed. Those monsters, the things we call zombies, swept across the globe overnight. Order collapsed, civilization was destroyed, and staying alive became the only hope."

Lu Shiyan flipped through the notes quickly. The contents of the notes were very messy, with records of various mutant creatures encountered, descriptions of the dirty fights between bases, and some research experiences on superpowers and crystal cores.

"This notebook seems to contain a lot of useful information," Lu Shiyan said solemnly, "especially the analysis of the weaknesses of various mutants and the energy of crystal cores, which is very valuable to us."

"That guy Black Wolf is really lucky to get these good things." Su Wan curled her lips.

Just then, there was a sudden burst of noisy footsteps and shouting outside the warehouse.

"Damn it! The lock of the warehouse was pried open!"

"Quick! Someone's breaking in!"

"Catch them! Don't let them get away!"

"Oh no! We've been discovered!" Jin Dongdong's face changed drastically.

Lu Shiyan's eyes narrowed. "It seems that the noise here has alarmed them. Su Wan, you and Jin Dongdong take your things and retreat along the original route to meet up with Xiao Han and the others. Li Kui and I will cover your retreat."

"No! It's too dangerous!" Su Wan immediately objected, "Let's go together!"

"Listen, their target is us, you go first, we will be able to escape soon. Li Kui, prepare to fight!"

Li Kui nodded and gripped the fire axe tightly.

"But..." Su Wan wanted to say something.

"Sister Su Wan, listen to Brother Lu!" Jin Dongdong pulled her sleeve and said anxiously, "We will only be a burden to them if we stay here!"

"You... must be careful!" Su Wan took out two submachine guns, several magazines and grenades from the space and stuffed them into Lu Shiyan and Li Kui.

Lu Shiyan took the gun and looked at Su Wan deeply: "Don't worry, we will be there soon."

Su Wan no longer hesitated, pulled Jin Dongdong, turned around and rushed out of the warehouse.

Seven or eight strong men had gathered at the door of the warehouse and were rushing towards this side with great momentum.

"Stop! Leave your things behind!" roared a bald man with a face full of flesh in the lead, holding a homemade gun in his hand.

"Black Wolf!" Jin Dongdong's body shook involuntarily when he saw the bald man.

"So it's you, pretty boy!" Black Wolf also recognized Jin Dongdong, with a sly smile on his face, "There's a road to heaven but you don't take it, there's no door to hell but you break in! It's just right, today I'll let you know what it means to be unable to live and unable to die!"

"Looking for death!" Lu Shiyan's cold voice rang out.

The submachine gun in his hand instantly spewed out angry flames.

"Da da da da da!"

Dense bullets rained down on the sturdy man who was rushing over.

There were screams all at once, and the several strong men at the front fell to the ground, with blood spurting out of their bodies.

Black Wolf reacted very quickly, rolling over and barely avoiding the fatal gunfire, but the bullet still grazed his arm, leaving a bloody mark.

"Damn it! They have guns! Get your weapons!" Black Wolf shouted at the top of his lungs, hiding behind a row of shelves.

More footsteps were heard from all directions. Obviously, all the people in Black Wind Village were alarmed.

Li Kui also raised his submachine gun and fired at the enemies who were trying to outflank him. Although his shooting skills were not as accurate as Lu Shiyan's, he was more brave and suppressed the opponent's offensive for a while.

Su Wan and Jin Dongdong took advantage of this opportunity and quickly rushed out from another exit of the warehouse, running towards the gap in the wall where they had entered before.

"Want to run? That's not that easy!" Seeing this, Heilang's eyes flashed with ruthlessness. He took out a black object from his arms, pulled out the fuse, and threw it in the direction where Su Wan and Jin Dongdong were running.

"It's homemade explosives! Be careful!" Lu Shiyan's pupils shrank.

Su Wan only felt a huge sense of crisis coming over her. Without thinking, she instantly entered the space to hide.

"boom!"

There was a loud bang, flames shot up into the sky, and the powerful shock wave blew away nearby debris.

"Su Wan!"

Lu Shiyan threw away the submachine gun that had run out of bullets. Lightning and flames intertwined in his hands, making crackling sounds.

Lu Shiyan pounced on the black wolf. The light green wooden armor on his body glowed faintly, blocking the flying debris.

Black Wolf just looked towards the direction of the explosion with a grim smile, thinking that the two troublesome guys had been turned into charcoal, when he felt an extremely fierce murderous aura covering his head.

He only felt a flash before his eyes, and a figure with lightning and sparks was close at hand. The instinct for survival made the fire ability in his body burst out instantly.

The blazing flames suddenly rose from his arms, forming two thick fire whips, which, with scorching heat, fiercely lashed towards Lu Shiyan who was close to him.