Skilled in managing a house

"Yes." Nini responded softly, turned her palm over, and a red projectile appeared, then bounced forward.

Nini is very clear about Zhang Yu's abilities, especially Zhang Yu's ear, which is simply unimaginable. Therefore, since Zhang Yu said he heard a cough, he must have heard it.

With a "pop" sound, the fire beads shot directly forward, setting off a bright light.

Zhang Yu stood in front of Nini and watched intently, the Seven-Star Sword in his left hand ready to be thrown out at any time. Then, the fire beads shot out far away, and Zhang Yu didn't see even a single figure.

"Huh? Is there no one there?" Zhang Yu couldn't help but murmured in a low voice when he saw this.

Nini also said in confusion: "Octopus, there is no one..."

Zhang Yu was also puzzled. He had clearly heard a cough just now, so how could there be no one there?

Could it be that I heard it wrong?

It shouldn't be the case. It was very quiet in the cave. When I walked, I didn't make any footsteps. How could I mishear the sudden cough.

"Ahem..."

At this moment, Zhang Yu suddenly heard a slight cough again.

The cough was right in front, but not as far away as the fire beads.

Zhang Yu whispered: "I heard the cough again."

"Where...I didn't hear it..." Nini said nervously from behind Zhang Yu.

"It's not far ahead." Zhang Yu said, walking forward slowly.

The cough just now was not loud, and according to the source of the sound, it was not far ahead.

After walking seven or eight steps forward, Zhang Yu stopped. The slight cough just now seemed to be here. Moreover, Zhang Yu could probably tell that the sound should come from the left side.

There was a stone wall on the left. Zhang Yu looked at the stone wall carefully. Within a moment, there was another cough, "Cough cough...cough cough cough...cough cough..."

The sound of the cough was very soft, but Zhang Yu was absolutely sure that the cough was indeed coming from behind the stone wall.

"There's someone behind here..." Zhang Yu whispered.

"Someone... who could it be..." Seeing Zhang Yu's words so sure, Nini became even more nervous.

"I don't know...but this person has been coughing, and it doesn't feel like he is doing it on purpose..." Zhang Yu continued to look at the stone wall as he spoke. He then raised his hand and began to tap the stone wall gently.

"Bang...bang..."

With just one tap, Zhang Yu could hear a slight hollow sound inside.

Hearing this voice, Zhang Yu felt happy and whispered: "It's empty behind here...I'll look for it now...there should be some mechanism to open the door..."

Zhang Yu searched repeatedly for a long time, but could not find any mechanism. Nini had already retracted the fire beads and illuminated them nearby so that Zhang Yu could see clearly. Through the bright firelight, Zhang Yu was absolutely sure that there was a neat gap on the stone wall, and that the back of this gap was empty.

The height of the gap is about one meter and eighty, and the width of the gap is about one meter.

With Zhang Yu's ability, he has already discovered the location of the secret door. It is definitely not difficult to find the mechanism. How advanced can the institutions here be?

Unfortunately, Zhang Yuzhen was never found. No matter how hard I knock, no matter how I listen to the sound, there seems to be no mechanism here.

"Cough cough cough... cough cough cough..." A slight cough sounded again inside the stone wall.

The cough was still so light that Zhang Yu could hear it, but Nini couldn't.

"What's wrong..." Zhang Yu was full of doubts. After pondering for a moment, he knocked on the stone wall in front of him again.

"Bang...bang...bang...bang...bang...bang..."

Zhang Yu increased the strength of his knocks this time. He was previously worried that his knocks would be discovered by the people inside, but now, because he couldn't find the mechanism, Zhang Yu was a little anxious and couldn't care less.

Because the force increased, Zhang Yu discovered something was wrong after knocking for a while. On both sides of the stone door, the hollow sound is louder, while in the middle of the stone door, the hollow sound is relatively quiet.

"There is no mechanism... This seems to be forced..." An idea came to Zhang Yu's mind.

Immediately afterwards, he stood on the right side of the stone door, pressed his arms on the door, and began to push hard.

"laugh……"

Not to mention, when Zhang Yu went all out, there was really a little friction sound under the stone gate.

However, this was Zhang Yu's effort to suck the milk.

"It seems that's really what happened!" Although Zhang Yu thought he couldn't push it away, he still had a smile on his face.

Nini seemed to have noticed the clues and whispered: "If you can't push it alone, let me help you."

"No, I have a way." Zhang Yu smiled slightly and took out two connected talismans from his arms.

He just threw the talisman away, and there was a "pop" sound, and a yellow scarf warrior appeared out of thin air beside him.

Nini had seen the Yellow Turban Warrior before, but when she saw him now, she was still surprised. She couldn't help but said: "Why is it him again? How did he change it?"

Zhang Yu immediately smiled and said: "You have your magic, and I also have mine."

After saying that, he pulled Nini backwards. With just a thought in his heart, the yellow scarf warrior put the mace in his hand on the stone wall, followed him to the stone door, and pushed the stone door with all his strength.

It has to be said that the Yellow Turban Warriors are currently unable to do anything else. There is no problem at all in doing rough and heavy work.

Especially for this kind of errand, only the Yellow Turban Warriors can handle it.

"Chi chi chi... chi chi chi... chi chi chi... chi chi chi..."

The stone door kept making friction sounds with the ground. Both Zhang Yu and Nini could see clearly that the right side of the stone door began to move forward, while the left side of the stone door moved outward. At this time, Zhang Yu completely understood that this stone door was flipped and there was indeed no mechanism. But because it is too heavy, it is much more difficult to open than ordinary trapdoors.

Of course, if there are many people, or if there are a few strong men, the door can be pushed open easily.

Zhang Yu was also lucky that he had the Yellow Turban Warriors. Otherwise, even if he discovered the door, he and Nini would not be able to push it open.

No matter how powerful the yellow scarf warrior is, he can't push him away at once.

After about half a minute, the stone gate in front of him was finally pushed back to its standing position.

A short passage was exposed inside, and relying on the firelight emitted by the fire beads, one could see from the outside that there should be a stone chamber behind the passage.

"Cough cough... cough cough cough..."

At this moment, the coughing sound just now sounded again. Zhang Yu could hear clearly, and even Nini could hear it.

"There is indeed a coughing sound...Is there someone here..." Nini said very worriedly.

"Is there anyone in this place..." Zhang Yu didn't believe it, because such a heavy stone door cannot be opened by one or two people. What kind of people can hide here.

Zhang Yu's thoughts moved again, and the yellow scarf warrior immediately picked up the mace and walked sideways into the passage.