In the dark underground space, Li Congxin and his group of five ran out of the diagonally upward staircase, and then followed the wall to the diagonal downward staircase.

Looking down, there was no light at all, and now Li Congxin only prayed that this staircase would not be the same as the staircase going up, it would be troublesome.

"Let's go, go down and have a look, maybe the other key is under this staircase." Menlv led the way inside.

"I hope it's not a corridor, it's full of weird ......," Mu Mulin muttered with some fear.

For the corridor, Li Congxin still feels a little disgusting now, but in that case, personal improvement is indeed fast, and it is a rare way to level up.

Judging from the current situation, the monsters in the corridor will not be refreshed for a while, maybe just such a chance, and it will be gone after killing.

Thinking about it this way, Li Congxin hopes that there will be a corridor here, and the corridor is full of monsters!

But I don't want to, because the feeling of farming monsters all the time is really disgusting, and the intensity is too great.

But after brushing once, I know that the monsters in this corridor will not be easily refreshed, and even if I encounter the same situation again, I can also brush the corridor intermittently to clean up, instead of passing through it in one go.

Everyone walked down the stairs, and after turning a corner, a shining stone door came into view.

The moment they saw Shimen, everyone's expressions froze.

"I'm going?!"

Menlv stepped forward, looked up and down the stone door, and then looked at the wall to the right of the stone door, where there was a groove that was exactly the same as the stone door at the end of the staircase up the stairs.

"Oh, I'll go!" Menlv looked back and smiled wryly: "I really don't know if it's time to cry or laugh now." ”

"Just open it and see." Li Congxin stepped forward and returned the items that opened the stone door to Menlv.

Li Wanrong smiled: "I think it's good, it's fast, isn't it just to upgrade and farm equipment, as long as you occupy the same, it's a good place." ”

Menlv shrugged his shoulders undeniably, stepped forward and placed the open item into the groove, and the stone door shook and cracked.

Menlv stepped forward and pushed the stone door open, revealing a long corridor that looked exactly like the previous one.

The difference is that this corridor is slightly inclined downward, while the previous one leads directly into the castle on the ground.

"Yes, I've been recruited, let's take it, everyone." Menlv smiled wryly and walked inside.

Li Congxin exhaled: "No way, let's take a step at a time, anyway, there is nowhere to go up there now, you have to find the rest of the keys." ”

"Could it be on those mobs out there?" Mu Mulin asked.

Li Congxin said: "There is a possibility, but it may not be big, after all, we have brushed the line on it once." ”

"Let's go, let's see what's inside."

The crowd walked down the corridor.

Not long after, ghost monsters appeared in front of everyone's eyes, which made the four people except Li Wanrong speechless for a while.

I didn't continue to talk nonsense, and nonsense can't solve monsters, and I can't upgrade to a level, so I just brush my head forward.

Kill all the way forward, the situation is exactly the same as the inside of the previous corridor, the deeper you go, the more monsters there are, and gradually some strengthening ghosts begin to appear.

The moment he saw the enhanced ghost, Li Congxin knew that he would have to brush here for a long time, so he spoke: "This time, we won't rush, we should go down, anyway, the monsters here shouldn't be refreshed." ”

"Understand, brush it, it's not bad, anyway, experience grows fast."

When the group of five kept farming monsters, outside the castle, the seven Golden Assassins had already cleaned up the mobs outside the castle.

Similarly, the Water Assassin picks up an unintelligible item, which is the key to the corridor.

The moment the monster was emptied, the seven Golden Assassins were also slightly relieved, and they all relaxed and sat on the ground to rest for a while.

It's just that they don't know that they made the same mistake as Li Congxin's five people.

Just when they had just sat down and rested for a few minutes, and their spirits were slightly relaxed, the red light in the castle flashed to the periphery of the castle, and the frightened seven people got up and retreated.

As the red light covered the outside of the castle, one by one the ghost monsters refreshed out, one after another, and in a short time, thousands of monsters surrounded the castle again, and the seven people who watched were dumbfounded.

For a moment, the Golden Assassin was dumbfounded, the Water Assassin Fire Assassin was also dumbfounded, and the other four people who came with them were also dumbfounded.

"Isn't it? If you don't brush it early or late, you just brush it after killing it all? ”

"Damn!"

"This, this, this ......"

Everyone was speechless for a while, you look at me, I look at you, I don't know what to do.

The water assassin gritted his teeth, pointed to the gate outside the castle and said, "Otherwise, just lure the monster away, and go and see if this door can be opened first." ”

"I'm afraid it's difficult, there are too many monsters."

"Don't lead yourself, just pull and run, give me plenty of time."

"Okay then, but I'll do it, mine is thicker than you." One of the four people who came with him spoke.

After a brief discussion, everyone immediately began to do it.

Seven people came to the direction facing the gate, three or three groups, and the rest of them stood in the distance, and when they saw them divide the monster group into two groups and lead them to both sides, the one who was left rushed to the gate quickly, stretched out his hands and pushed it inside, while constantly observing the surroundings.

In just a moment, there was no time to take a closer look, the door didn't open, the monsters swarmed back, and he had to retreat, otherwise he would have hung here.

After three or five trials, the door could not be opened, but they still found some clues.

"There's a groove in the ground directly opposite the two large doors, and it should be something to put in." The man who had come up to check a few times before spoke.

"Groove?" Everyone was puzzled.

"Well, there is indeed a groove, it should be opened after putting in a key or other item, it shouldn't be a key, it's a hexagonal item, an opening stone or something."

"Hexagon?"

The Water Assassin suddenly remembered the item he had obtained from farming monsters earlier, so he took it out and said, "This thing? Hexagon, ah, this. ”

Everyone looked at the item in his hand.

The Golden Assassin was surprised, "Where did it come from?" ”

"It exploded when I brushed the mob before, I don't know what to use." The Water Assassin explained.

"Haha, that's supposed to be this thing, try again?"

"Okay, try again."

The Water Assassin handed the item directly to the person who had come forward to check it multiple times, and then they divided into two teams again to lure the monster away, and the player with the open item quickly stepped forward, without looking, and directly pressed the item into the groove.

The ground shook suddenly, boom!

A gap opened in the closed gate of the castle's outer wall......