Within a few minutes, Wang Yi returned to the monitoring wall and observed the picture on the monitoring wall.

Ma Yuanliang quickly noticed him, turned his head to look at the site where the Silent Whisperers were processing communicators, and then asked Wang Yi, "Why are you here again?"

"Just thought of a question." Wang Yi took a deep breath and said, "The electricity used on the monitoring sentry is a battery, which can last for four or five days at most, so I don't need to talk about the rest later."

Ma Yuanliang instantly understood what he meant, and patted his forehead in confusion, but when it came to his eyes, he found such an important omission.

The planned exploration of the Stone Chamber is for one month, excluding the time spent on return, and all aspects of preparation are six months of preparation, which means that the maximum number of months can be explored in the Stone Chamber Group.

However, the monitoring sentry can only operate for four or five days, which means that the monitoring sentry will completely stop working after four or five days, which means that people in the depths of the stone chamber will not be able to get in touch with the outside world.

Ma Yuan said angrily: "Why didn't you say it earlier?"

"......" Wang Yi was stunned for a few seconds, and said in a low voice: "I just thought of it."

Everyone looked at the two of them as they argued.

Chen Feng heard their discussion clearly, and commented: "If the monitoring sentry stops running during the investigation, what happens inside, these people outside have no way of knowing, whether it is a re-plan, and we will start the investigation after solving this problem."

Ma Yuanliang stretched out his hand and pointed to the monitoring wall, and said, "Those black demons are coming soon."

"Give up this so-called opportunity." Chen Feng said solemnly.

"I have an idea." Xu Mengyi said: "Can you equip the monitoring sentry with a few more sets of batteries, one group of batteries can last for four or five days, and a few more sets of batteries will be fine."

Wang Yi immediately shook his head in denial, and said: "No, the planned mission this time takes too long, and some batteries can't wait for the monitoring sentry to consume power, and it will run out of itself, and we don't have so many batteries." Even if there were, I couldn't carry it, and I needed too many of them. ”

Ma Yuanliang agreed with Wang Yi's statement, but he didn't want to give up this plan, so he got up and walked back and forth, and said, "What if you pull a cable for those monitoring sentries?" Electricity from our nuclear power plant. ”

"This ...... Haven't tried. Wang Yi speculated: "I don't know if the ghost will attack the cable."

"In that case, I thought I could try." Chen Feng reminded: "Don't we have a few transmission lines outside the base, those lines have not been attacked by ghosts so far, and there should be no problem in laying a transmission line in the stone chamber group."

"The question is how to lay it?" Wang Yi paved the road.

Chen Feng then proposed: "Let the exploration team bring enough cables, lay them while moving inside, and put them directly on the ground, and lay surveillance sentries by the way."

"Well, that's a good try." Ma Yuanliang arranged for Wang Yi: "Go ahead, prepare the cable."

Wang Yi was unmoved, still standing in place.

Ma Yuanliang looked at him with a thoughtful face, and asked, "What?" Still have questions? ”

Wang Yi sighed: "The time is too tight, I can't prepare it, some time ago, I set up lines outside, and built electromagnetic columns, and basically used up the cables in the base, and it is impossible to prepare the cables for the exploration mission in such a short time." If you really want to act according to the plan, it is not completely impossible. ”

Ma Yuanliang asked, "What way?"

"You continue to follow the previous plan, what you want to bring, what you want to set up the monitoring sentries how you want, and then we can build as many cables as these people out there can be, and then arrange a team of people to connect the monitoring sentries that you have set up."

Ma Yuanliang analyzed: "You mean to enter the stone chamber group in two groups."

Wang Yi corrected: "It's not divided into two batches, it's arranged in two batches, the first batch is your exploration team, and the second is the additional team we have arranged, which is specially connected to those monitoring sentinels with cables." So even if you are in trouble, there are still a number of support teams behind you, what do you think? ”

Ma Yuanliang thought about it for a moment and decided: "Okay, then arrange it like this, now you continue to help the exploration team prepare."

"I've set it up for the Silent Whisperers over there, they know what to do, and it doesn't make a difference with me or not." Wang Yi pointed to the monitoring wall in front of him and said, "I'd better stay here and take a look at this monitoring."

"Whatever you want, but you have to make sure that the team doesn't go wrong."

Wang Yi made an OK gesture and said, "Don't worry."

As soon as Wang Yi's voice fell, Chen Feng reminded everyone to check the monitoring window in the upper left corner.

The surveillance window shows that the Black Evil group has reached the iceberg fortifications, and countless Black Evil have begun to climb the iceberg.

Most of the blacks had climbed the iceberg for a short distance before sliding down, and the blacks who had slid to the bottom of the mountain climbed to the top again, but it didn't take long for them to slip again.

After several attempts, the blacks were unable to climb up the iceberg due to the smoothness of the iceberg's surface, so the blackevil began to attack the iceberg with fireball balls, blasting up countless ice cubes in the intention of breaking through the mountain.

A small group of Blackevil walked up to the walkway carved out by the Lava Ghost soldiers, and through the walkway they made their way to the entrance and exit of the base, attracting the attention of the other Blackevil who were climbing to the top of the mountain.

More and more blacks walked towards the corridor, towards the entrance and exit of the base, and the iceberg defenses were less and less attacked.

Ma Yuanliang looked at this situation and commented: "It seems that our iceberg fortifications have been saved."

"What's the use?" Wang Yi shook his head and said, "This iceberg fortification can't last a few minutes in the face of so many ghosts, and it's useless to keep them."

"If you can hold on for a few minutes, maybe it will help us a lot in the future."

"I hope so." Wang Yi then reminded: "Heisha is about to enter the entrance and exit of the base, and it may not be long before they all enter the stone chamber group, I said that you and Dongzi should hurry up and rest for a while?"

Ma Yuanliang said to Chen Feng: "Let the reconnaissance team give me an estimate of how long it will take for this group of black demons to enter the stone chamber group."

Chen Feng quickly conveyed the order to the reconnaissance team outside the base.

After about two minutes, the reconnaissance team sent back the estimated results, pointing out that the number of this group of black demons was about two million, and the length of the team pulled out was more than three kilometers, and according to the speed at which they entered the entrance and exit of the base at this time, it would take at most another hour and a half to enter the entrance and exit of the base.

Ma Yuanliang nodded while listening to Chen Feng's relay, and couldn't help but be stunned when he finished speaking: "No, why are these black demons so little?"