Galaxy can provide some professional and long-term explanations of Liu Gan based on the information provided in the database, but these explanations make Liu Gan drowsy and never get the point.

After learning that those complex scientific instruments were of no use to her, Liu Gan no longer asked Milky Way to continue to explain the information like this, and only asked her to carefully find some spare parts that would be useful to her, so as to try to make her lunch box when she left.

However, Galaxy obviously was not only interested in her lunch box. She was like a hardworking ant, and soon collected piles of strange accessories and materials, so many that she could not carry her back at all.

"Does your lunch box... need to be made so complicated?" Liu Gan couldn't stand it anymore.

"No, these are devices used to make nanorobots, these are devices used to make nanorobots injected. If the materials are enough, I want to transform the circulation system of my body." Galaxy explained to Liu Gan.

"Does these things need electric power to make?" Liu Gan asked Yinhe again.

"Of course, it's necessary." Galaxy nodded.

"Then just make a charger for the time being. You can't do anything without electricity. Let's talk about other things when you have the chance in the future." Liu Gan had to stop Milky Way, otherwise the things she collected would not be used for the time being, but greatly increased her load.

Yinhe stared at Liu Gan with wide eyes. It was obvious that she didn't want to give up these things she had worked hard to find.

"In a person's life, there will be many burdens that cannot be given up in his feelings. In fact, they are useless. If you don't know how to give up, you will not be able to move forward anymore. Staying still in place for these burdens is not only dangerous, but also makes you lose more opportunities to appreciate the future. Understand?" Liu Gan had no choice but to talk about philosophy with the Galaxy.

"Okay, I'll hide these things and come here to use them later." Galaxy reluctantly sorted out the spare parts she found, and finally chose only the accessories needed to prepare the simple charging device, leaving behind some other important spare parts that were small in size and did not take up space, so she started back with Liu Gan.

On a certain floor in the Biochemical Materials Laboratory, Liu Gan found a roll of rope, which was about two or three millimeters thick. After being plated, it reached at least a few hundred meters long according to the nominal mark on it, but it felt as light as if nothing was left in hand.

"I know this material." Galaxy opened her mouth after seeing the rope.

"What material is this?" Liu Gan tried to pull the rope and found that the thin one was very strong.

"It is a biochemical material, a material that is very close to my body's skin. It is extremely tough. Even if a weight hanging nearly one ton of weight will not be broken. The limit load-bearing can even reach about two tons." Galaxy answered Liu Gan based on the information in the database.

"No way?" Liu Gan tried to pull the rope apart and put it on the ground, then used a fire axe to chop down a few axes. As a result, the fire axe cut a few deep marks on the floor, but the rope was unscathed.

"This is a good thing. Climbing, binding and other things are the most useful, and it doesn't take up any weight when you carry it on your body." Of course, Liu Gan put the rope into his backpack.

...

At noon, when he reached about the fiftieth floor of the building, Liu Gan heard some chopping sounds. Needless to say, it was definitely the three players discovered by the detection device. Liu Gan gently touched over and looked at it, and found that two men and one woman were chopping the zombies in the corridor there.

The weapons they had were three fire axes found in the building. They obviously thought the initial weapon was not easy to use, so they threw them all away, and replaced it with this kind of fire axe. The three of them cooperated very well when they cut zombies, and from the physical strength, speed and agility they showed now, they should have all risen to at least level three.

There is no doubt that they are also players who came in when the server was opened, but they were directly teleported to the building. They have been slashing these ordinary zombies in the building for the past three days, and have some combat experience and have been upgraded.

The mutated zombie discovered by the detection device was in the more than 80 layers and did not encounter them. Otherwise, with their current skills, they would probably not be able to withstand the attack of the mutated zombies.

These three people are not the kind of vicious and vicious people. Liu Gan didn't see this from their appearance, because... he actually knew one of these three people... The man who led the lead was his classmate in high school. What's his name? It seems that his surname is Zhang, and he can't remember what Liu Gan is exactly called.

Student Zhang’s temper and personality are more enthusiastic and generous, but Liu Gan has always been low-key and does not belong to the same circle as them, so there are not many interactions between the two.

Since there are not too many conversations, there is no need to say hello when we meet.

Just as Liu Gan was about to give up this level of exploration and went to a higher level to pass by them, something suddenly happened to the two men and one woman.

Originally, they were only slashing two zombies, but suddenly three more zombies rushed out of the room next to them. The siege of five zombies caught them off guard. The formation was disrupted, and it seemed that danger might occur at any time.

Originally, at their level, it should be enough for three people to deal with five zombies, but it is very likely that they have not found enough food in the building these days, so they are a little exhausted and even tend to exhaust themselves, so they seem a little overwhelmed when dealing with five zombies at the same time.

After all, I'm a high school classmate...

Liu Gan rushed over, waved the fire axe in his hand and killed the zombies in his hand, helping the small team of two men and one woman to free up the siege.

When Liu Gan rushed over, the two men and one woman were shocked. They saw clearly that the other party was helping them kill zombies and then felt a little relieved. After classmate Zhang looked at Liu Gan, he immediately recognized Liu Gan.

"It's you? Liu...gan?" Student Zhang obviously still remembers Liu Gan's name. After recognizing Liu Gan, he seemed very happy. It was not easy to meet an acquaintance in this trembling world.

Classmate Zhang's name is Zhang Shengli. Although he remembers Liu Gan's name, Liu Gan cannot remember his name. When Zhang Shengli said Liu Gan's name, the woman around him also looked at Liu Gan and seemed to recognize Liu Gan, but Liu Gan had no impression of her at all.

"Are you playing this game too?" Liu Gan had no choice but to make a speech with them.

"I have disappeared for a few years, old classmate, I didn't expect to meet here! Our situation just now was a bit dangerous. Fortunately, you took action in time, otherwise we would be in trouble." Zhang Shengli thanked Liu Gan a few times.

PS: In the new week, the new book is on the critical moment, I ask my brothers and sisters for recommendation votes, thank you!
Chapter completed!