The three of them walked sneakily in the aisle. There were many black-clothed priests and purple-clothed priests patrolling in various aisles. Xiao Yu and others had to avoid it carefully. They didn't dare to do it when they met the purple-clothed priests, for fear that they would cause too much noise and attract the patrolling black-clothed priests, which would be troublesome.

After passing through the tunnels, the three of them reached the end of the fifth floor. A thick metal gate was tightly closed, cutting off the way Xiao Yu and others.

"It's over, the door here is closed." Hal said with a frown.

"When will it be opened?" Xiao Yu looked at the metal door. This metal door was extremely thick and it was impossible to force it to open.

"I don't know, it's six days long and a few hours shorter." Hal said.

"Close for six days?" Xiao Yu asked, "Is there any other way to go?"

"No." Hal shook his head.

Xiao Yu's expression became solemn. Could it be that he had been waiting here? What if he really waited for a day or two, would he still be able to do the task?

"Didi..." The sound of the robotic doll attracted the attention of the three people. The robotic doll was fiddling with something beside the door. Opened a piece of metal on the wall, revealing various fine equipment. A long mechanical tentacle grew on the body of the robotic doll, inserting it into these fine equipment. "I found that the door locking program, the program is being interpreted..."

Time passed by minute by minute, and Xiao Yu understood that the robot puppet was trying to open the metal door, and it would take time to open the door.

A purple-clothed priest walked towards this place in the distance.

Xiao Yu winked at Hal: "Don't make too loud noises."

"Yes." Hal's body gradually disappeared and entered a stealth state.

The Purple-Clothing Priest was about ten yards away from here and found Xiao Yu and the mechanical doll. The Purple-Clothing Priest opened his mouth and was about to scream, but he called his companion over. A cold light flashed behind him, and a dagger pierced the back of his head, knocking him out.

The dagger in Hal's hand smeared heavily on the throat of the purple-clothed priest. The purple-clothed priest's eyes gradually dissipated and fell to the ground.

After Hark killed the purple-clothed priest, he dragged the body over here and hid it in a hidden place.

"The interpretation is completed, the door is opening, five seconds, four seconds, three seconds..."

"Didi, the door opens..."

The metal door slowly opened, and the robot took back the mechanical tentacles.

"Luckily, the energy of the robot doll has not been used up yet." Xiao Yu thought to himself that if there were no robot dolls, they would not be able to pass through this gate at all. Maybe they would have to wait outside this gate for a long time, and it would be difficult to predict what would happen in the middle.

Xiao Yu and the other two entered the gate. Under Hal's guidance, Xiao Yu and the other two walked along the rotating ladder for three floors.

"There are a large number of mechanical giants in these two floors. If you enter these two floors from other places, you will be besieged by mechanical giants. Only here is safe." Hal said. Hal's meaning was very obvious. If Hal had not led the way, he and Feith would have died miserably.

Hearing Hal's words, Xiao Yu smiled faintly.

Walking to the eighth floor, Hal took Fei Si and Xiao Yu into the elevator again, and the elevator accelerated and ran upwards.

"It's almost here, we will directly reach the top of the underground city." Hal seemed a little excited, his eyes flashing with strange light.

Xiao Yu couldn't help but take a look at Hal. The fanaticism and strange expression in Hal's eyes made Xiao Yu feel a little alert.

The height of the elevator climbs rapidly, and the numbers on the elevator are also constantly jumping, 100th floor, 101st floor...

The elevator stopped on the 108th floor.

"Be careful, the door is about to open." Hal reminded, clenching the dagger in his right hand.

Fei Si was also ready and ready to go.

After about two minutes, the elevator speed finally slowed down slowly. Dingdong, the elevator door opened, and two guards stood next to the elevator door.

The two figures shot out quickly and rushed towards the two guards. The figures flashed and had already reached the side of the two guards.

Sneak attack!

Hal arrived behind a guard, knocked the guard out with a sneak attack, and then assassinated the guard with a throat.

On the other hand, the Knight's gun in Feis's hand hit the guard's head with a shock attack, knocking the guard out of the head, and slashing the guard with a dragon flame slash, killing the guard.

The two of them acted neatly without any delay. After they killed the guard, they threw the guard's body into the elevator.

"Ding Dong." The elevator door closed and ran downward.

Xiao Yu looked around casually. This was an extremely open space. He couldn't see the top. If he hadn't known in advance that the city was underground, he would have thought it was in some strange space.

"This is already the top floor of the underground city, but it will take us two hours to reach the central palace. Also, this is the most closely guarded place. We must be extremely careful and must not omit it." Hal said.

"Two hours?" Xiao Yu glanced at the robot doll beside him. This time just fits the energy duration of the robot doll, and it seems that it is still time.

"Didi, I found a priest in black ahead, with a number of 50 and a distance of 100 yards." The hard voice of the robot puppet reached Xiao Yu's ears.

Xiao Yu's expression changed slightly and said, "Hide quickly."

The three of them found a corner and hid. After a while, the brigade of black-clad priests walked past Xiao Yu and the other two.

Seeing the black-clothed priest gradually moving away, Xiao Yu and others dared to come out and continue to move forward. With the exploration of the mechanical doll, they avoided the oncoming black-clothed priests in time. The three of them were not discovered by the patrol priests, and were in danger along the way.

After walking along the way for about two hours, I finally saw the extremely luxuriously arranged imperial palace in front of me. The palace is very magnificent, with red walls and green tiles, and a large number of gems on the exterior walls. Under the illumination of magic lamps, it shines brightly and is dazzling.

"Come with me." Hal glanced at the large number of guards outside the palace and said.

Bypassing the palace wall and reaching a side door, Hal flashed and entered the side door. After a while, Hal's dagger was stained with some blood, and walked out and said, "Let's go in."

Xiao Yu and Fei Si followed Hal into the palace.

The three of them shuttled through the roundabout corridors of the palace, and they could encounter one or two female semi-deads from time to time. Hal cooperated with Feth to quickly kill him and then destroyed the body.

"I will have ten minutes to enter the place where the palace queen sleeps." A strange light flashed in Hal's pupils.

"Wait, we can't go in yet." Xiao Yu suddenly remembered something and said.

"Why?" Hal asked in confusion.

"Let's clean up the semi-dead outside first and avoid them assisting the queen." Xiao Yu said.

Hal looked at Xiao Yu suspiciously. Xiao Yu said that he could not force him when he entered later. He suspected that Xiao Yu had other purposes.

Xiao Yu does have other purposes. Hal and Feith are equal in strength, and they may not be able to beat the Queen even if they join forces. Hal is a little bit of a thief, and he can run away if he can't beat him. If he loses, Feith has to take advantage of him.

It's already here, Xiao Yu can't fail!

If you upgrade Faith's strength to a higher level before entering, you can be more confident!

So before Fei Si enters the advanced level, Xiao Yu will not go in to deal with the Queen.

"Feith, kill those two guards."

"Yes, messenger." Feith responded, waving his knight's gun and rushed forward.

"Do I want to help?" Hal looked at Xiao Yu and asked.

"No need." Xiao Yu shook his head and said.

Har's eyes were even more suspicious. If he just wanted to clean up the guards around him, why didn't Xiao Yu ask him to help Fei Si?

The two guards were two ordinary elites at level 20, and Fei Si was more than enough to deal with these two ordinary elites.

"Come out a level 20-level strengthening elite, guard commander, Har, go up to assist Fei Si. You can only use the stun skill, not the attack skill." Xiao Yu said. In this case, most of the experience points will be obtained by Fei Si.

"Yes." Hal responded, his body slowly disappeared, and a hint of coldness flashed in his eyes. Although he was confused about Xiao Yu's behavior, he could not violate Xiao Yu's orders. After all, he still wanted to Xiao Yu and had to rely on Xiao Yu to defeat the queen.

Bang, a level 20-level strengthening elite fell to the ground, killing the guard chief Fei Si gained most of the experience.

"Did, the energy is exhausted..." The robot said mechanically, the red light emitted from his eyes gradually dimmed, his body constantly changed and contracted, turning back into a round metal ball, quietly placed on the ground.

"Three hours have passed." Xiao Yu bent down and picked up the metal ball. The robot puppet completed its mission. Since it has arrived at the ground, the robot puppet seems irrelevant. Xiao Yu put the robot puppet into his backpack, and maybe one day he can find a new C-type energy core so that the robot puppet can be used again. I have to say that this robot puppet is indeed very useful.

With Hal's assistance, Feith killed hundreds of elites in a row, more than 20 of which were reinforced elites.

"Ding Dong." A white light fell on Feith.

"Advanced?" Hal was slightly shocked. He then understood why Xiao Yu stopped to clean up these guards. Unexpectedly, Fei Si, a low-level wandering soul, would also advance. Hal immediately regained his calm expression, not knowing what he was thinking.

Fei Si was very excited, waved the knight's gun in his hand and slashed another strengthening elite under him.

Xiao Yu glanced at Fei Si's blood volume, and Fei Si's blood volume had risen to more than 60,000. Xiao Yu glanced at Hal, who was lowered his head and pondering beside him, showed an undetectable smile, and said to Fei Si: "Okay, let's go in."

Xiao Yu walked into the palace.

"Yes, messenger," said Faith, picking up the knight's gun and walking inside.

Hal looked at Xiao Yu's back thoughtfully and quickly followed.

Xiao Yu was sure that Hal must have a strange intention. Even if he would not help the queen deal with him and Fei Si, he would likely escape at the critical moment. Fei Si's strength increased and his confidence in winning was greater. If Hal suppressed the queen, Hal's possibility of Hal's escape at the last moment will be greatly reduced, and Hal can also restrain Hal.
Chapter completed!