"Well, but, you won't let us into this lock demon tower......" Nie Fei said with a frown.

"I want more beautiful clothes and outfits than theirs, and as long as you can get them, I'll be out of here for a short time, and I don't know anything that happens in the meantime!" Xiao Lengyu gritted his teeth and said.

"Deal!" Nie Fei was overjoyed.

"Stinky boy, why don't you bring me something?" Xiao Lengyu waited for Nie Fei and scolded with a smile.

Nie Fei smiled and hurriedly handed a spatial ring to Xiao Lengyu, who used his divine sense to probe, and a smile immediately bloomed on his face.

"Sister Leng Yu, do you think you can leave for a while?" Nie Fei even changed his name for Xiao Lengyu, since the other party ate this set, of course he would not be stingy with his own sycophants.

"Stinky boy, your mouth is quite sweet, yes, okay! I'm leaving. Xiao Lengyu smiled and nodded.

"Thank you, Sister Leng Yu!" Nie Fei finally breathed a sigh of relief.

"Giggles, stinky boy, remember, you only have time for a stick of incense, I'll be back as soon as the time is up, don't blame me for not reminding you." Xiao Lengyu's words were still echoing in the air, but the person had disappeared.

Depend on! It's stingy! A bunch of good things in exchange for a stick of incense, this Xiao Lengyu's appetite is a little too big! Nie Fei cursed in his heart.

"Concubine Ling, is there enough time?" Nie Fei asked worriedly.

"Young master, that's enough!" Concubine Xiao replied confidently.

"I wondered, the same surname Xiao, why is the gap so big? It's still our family's spirit concubine! Nie Fei couldn't help but sigh.

"Young master, how can I be as good as you say?" Concubine Xiao Lingfei blushed again.

"I said yes, that's good, don't be modest, hurry up and find a way to enter this lock demon tower." Nie Fei waved his hand and said.

"Okay, young master." Concubine Xiao Ling secretly glanced at Nie Fei, and then quickly picked up the magic trick......

In just half a stick of incense, a blue circle of light appeared in front of the three of them, and Nie Fei raised his feet and stepped into this circle of light without saying a word, and Xiao Lingfei and Duan Zhiqing also followed closely behind and stepped into the blue aperture.

After the three of them entered, the blue circle of light disappeared with a 'swish', and everything outside the Lock Demon Tower returned to normal.

"Huh? Mixed Elemental Array! Could it be that the woman next to this kid is the formation master Xiao Lingfei? Xiao Lengyu's voice suddenly sounded, and in the next second, she appeared where Nie Fei had stood before.

"No wonder this kid has the courage to break into the Demon Tower, it turns out that there are masters to help! Hum! What about the Formation Grandmaster? The last layer of this Lock Demon Tower is not something that can be broken through just by relying on a high level of formation, stinky boy, I want to see how capable you are! A sneer appeared at the corner of Xiao Lengyu's mouth......

"Huh!"

Nie Fei appeared on the eighteenth floor of the Lock Demon Tower, and immediately after, two more soft sounds came, and the figures of Xiao Lingfei and Duan Zhiqing also appeared behind Nie Fei.

"Why did we go straight to the top?" Nie Fei asked in surprise.

"Young Master, the further down this lock demon tower goes, the stronger the mana of the tower itself becomes, and with the ability of the concubine body, it can only open up a small teleportation array above this eighteenth layer." Xiao Lingfei explained.

"Oh, I see? So according to what you can see, what layer will Mu Caidie be imprisoned on? Nie Fei asked.

"I don't know, but with the cultivation of the lady during the tribulation period, at least the last three layers of this lock demon tower can be suppressed by her!" Concubine Xiao Ling estimated.

"No matter, let's search it layer by layer, even if we turn the whole tower over, we have to find Mu Caidie!" Nie Fei said in a deep voice.

"The concubine will definitely do her best to help the young master." Concubine Xiao Ling replied.

"Okay, let's go." Nie Fei waved his hand and motioned for the two girls to follow him.

"That, young master, do you want to change our clothes back?" Duan Zhiqing suddenly asked with a twist.

"No, I see that you are all dressed well, so I will consider it a gift from me." Nie Fei said generously.

"Really?" Duan Zhiqing was overjoyed.

"Young Master, will I lie to you?" Nie Fei was speechless.

"Thank you, young master!" Duan Zhiqing and Concubine Xiao Lingfei glanced at each other, and thanked Nie Fei in unison......

The eighteenth floor of the Lock Demon Tower is a large indoor labyrinth, and there are all kinds of fierce demon beasts flowing in the maze, but most of these demon beasts are just some fifth-level demon beasts, and occasionally one or two sixth-level demon beasts pop up, and they can also be easily killed by the three of them.

With the system map in hand, Nie Fei ran all the way to the entrance of the next floor, which saved them many detours.

And at the entrance of the next floor, a formation ban was set, but fortunately, this formation is just a gossip array, not to mention Concubine Xiao Ling, even Nie Fei himself can break it!

So Nie Fei had to scold in front of the two women, and broke the gossip array in three or two clicks, and the group went down from the eighteenth floor to the seventeenth floor smoothly.

And in this seventeenth layer, there was another large indoor labyrinth, so Nie Fei once again took the two girls straight to the entrance of the next floor......

Seven days have passed, and in the Lock Demon Tower, Nie Fei took Concubine Xiao Ling and Duan Zhiqing down to the ninth layer in one breath, and as soon as they entered the ninth layer, the three of them were blocked by a huge stone door!

I saw that there was a complex formation diagram on top of this stone door, and at the same time, there were nine grooves arranged on it in a certain order, the Nine Palace Array! If you want to open this door, you must first break this Nine Palace Array.

But Nie Fei showed an embarrassed expression, grandma's! This Nine Palace Array is more special, you must find nine keys in turn and put them into the nine grooves on the door, in order to open this door smoothly, if you choose to forcibly break the formation, I am afraid that it will backfire, causing the entire lock demon tower to counterattack!

"Young Master, it looks like we're going back the same way again." Concubine Xiao Ling said helplessly.

"Alas! I should have known that I should have paid attention to it, and it would have caused me to take an extra unjust road! Nie Fei sighed.

"Why go back the way you came? Can't this formation be broken? Duan Zhiqing asked puzzled.

"Hehe, let me explain." Concubine Xiao Lingfei glanced at Nie Fei, who had an ugly face, and then explained to Duan Zhiqing in a whisper.

It turns out that starting from the eighteenth floor to the tenth floor, a key has been placed on each floor, and only by collecting these nine keys can the stone door of the ninth floor be opened!

And Nie Fei was concerned about Mu Caidie's safety, and he was only concerned about hurrying, where would he notice this detail? Therefore, now they can only go back the same way and find all the nine keys to open the stone door.

"One more trip, one more trip, it can be regarded as a lesson!" Nie Fei said with a wry smile.

In fact, the treasure hunting radar once hinted that a different color of light appeared in the maze on each floor, but Nie Fei only thought that those light spots were some treasures, and didn't care, now it's okay, I finally know which light points represent what, grandma's! It represents egg pain......