After escorting his parents all the way out of the shelter and returning to the ground, Yan Chong returned to the shelter.　

　　 He secretly left half of his parents' hair, and waited a while after the exploration was completed before looking for them, and then looking for a chance to return to China with them.

　　 Although he is very interested in the secrets of his parents, he still can't read their memories directly with the eyes of fraud.

　　 That is a means to deal with enemies or passers-by, not suitable for relatives and friends.

　　 I still need to find the opportunity to slowly reveal what happened to me. At that time, maybe he will also know some things about my parents.

　　 When Yan Chong entered the passage again, the alarm sounded again.

　　 He was also very helpless about this. Although he learned about some of the facilities and operation methods of the shelter through the memory of the middle-aged man, the problem is that almost all of them are operated by Ultrain.

　　 There are a few places that can be purely manual, but Yan Chong is too lazy to operate, anyway, there is no one in the shelter.

　　 In each shelter, there are still a lot of ancient people of the Black Iron Steps, there are thousands of people, but there are fewer bronze Steps. The ancient people of the Bronze Steps here have been wiped out by Yan Chong.

　　 However, as a high-level person in the shelter, the middle-aged man certainly knows where the ultrabrain solvent is stored in the shelter.

　　 Therefore, Yan Chong's main purpose of returning to the sanctuary again is to obtain ultrabrain solvent. This is also a problem that has plagued him for a period of time. Without Ultrain, we cannot effectively deal with ancient people.

　　 Through the passage on the right, Yan Chong came to another hall.

　　 There are various instruments in the hall, full of sci-fi feeling, which makes people feel very tall and unclear at first glance.

　　 In the middle of the hall, there is a column connected to the ceiling. The shape of the column is a bit like a cooling tower of a nuclear power plant. The two ends are thick and the middle is thin, and the whole body is black, as if it were made of some kind of rock.

　　 Yan rushed to the black pillar and clicked on it a few times. The black on the pillar suddenly receded and turned into a transparent crystal pillar. Several rays of light shot out from the pillar, forming a holographic image in the air.

　　 This hall is a control room in the shelter, and this pillar is the control core. Yan Chong adjusted the layout of the shelter according to the manual control method remembered by the middle-aged man.

　　 Next, he is going to the laboratory of the shelter.

　　 Then, the metal on one of the walls in the hall slowly creeped, and then turned into three doors, but the doors did not open.

　　 To open the door requires the use of Ultrain, so Yan Chong can only brute force the crack, and the defense level of the laboratory is A level.

He first took out a rare elementalist card with a bit of distress. After crushing it, his combat power immediately increased to the golden rank. Then, he put his palm on the metal door in the middle, and began to chant the spell silently. .

　　 With his chanting, the temperature in the hall dropped suddenly, and a layer of frost formed on the metal door.

　　 This is not a formal magic, but an elemental manipulation technique. Yan Chong uses the first half of the A-level water magic spell to gather the water elements and create an ultra-low temperature effect, which is gathered on the metal door.

After 　　, Yan Chong took his palm away and instantly cast a fireball technique, and a fist-sized orange fireball appeared in his palm.

　　 With a thought, the fireball flew towards the metal door and exploded suddenly after hitting the metal door.

　　 It was originally a living metal door, but it was as fragile as glass. Numerous cracks appeared on it. Yan Chong smashed it with a punch, and the metal door shattered to pieces.

　　 Yan Chong walked in directly. Inside was a short passage. There was still a door at the head of the passage. Yan Chong followed the same pattern and broke the door again and came to the laboratory.

　　 The laboratory is not big, about 100 square meters. It also contains a series of instruments, and there are some bottles and cans next to it, which looks like a laboratory in the pharmacy department.

　　 More conspicuously, there are three dormant chambers in the corner of the laboratory. Through the transparent cover of the dormant chamber, you can see three unclothed ancient people lying inside.

　　 This is also Yan Chong's second purpose, to get rid of the ancient silver ranks in the shelter.

　　 He didn't rush to take care of these ancient silver tiers. Instead, he came to an instrument and started to operate it.

　　 The alarm just didn't wake them up, and they were not in a hurry.

　　 After a while, Yan Chong was a little disappointed. Because Ultrain's materials are relatively complex, some of the precious biological materials have decayed over the long years, so they cannot be configured for the time being.

　　 But Yan Chong has already memorized the formula. Ultrain is a kind of biological solvent, which contains medicinal ingredients and some mechanical ingredients. The composition of the medicament can improve the functions of human organs and enable the human body to successfully fuse Ultrain, while the mechanical component is a device similar to a nanorobot, which is responsible for the specific computing functions of Ultrain.

　　 Yan Chong finally got a test tube filled with a transparent liquid, which contained the mechanical components of the Ultrain solvent. As long as the biological materials were all found, they could be used successfully.

　　 After putting away the test tube, Yan Chong looked at the three dormant chambers, and also took the pig-killing knife in his hand.

　　 He first hypnotized one of the ancient people through the dormant chamber with the spiritual power of the golden rank, but found that the spiritual power could not pass through the transparent cover.

"Yes, the defensive strength of the dormant warehouse of the ancient silver ranks is at Grade A, and the mental power that can defend Grade A is also normal~lightnovelpub.net~ Yan Chong secretly said in his heart, but found that there is no normal way to get from it. Open the dormant compartment outside.

　　 The dormant warehouse is very protective, allowing the ancients to have no worries when they dormant, and they will not worry about being attacked.

　　 Unless you use Ultrain, you must have higher authority.

　　 The main reason why Yan Chong did not directly violently destroy the dormant warehouse was because he wanted to know more in-depth secret information from them, but since there was no way to open the warehouse cover, he could only violently crack it.

He continued using the previous method, placing his palm on the lid of one of the dormant chambers, chanting a spell in his mouth, causing the temperature of the lid to drop sharply, and then he took the pig-killing knife and slammed toward the chamber. Cut off the cover.

　　 The transparent cover was not even as strong as the previous metal door. It was cut to pieces by Yan Chong, and countless fragments fell directly on the ancient people lying inside.

　　 But Yan Chong showed a very suspicious expression, the other party is like this, and he hasn't awakened yet.

　　 He had this doubt before, so he let his parents leave here first.

　　 He started reading, but there was no result.

　　 "Could it be that he is dead?" Yan Chong murmured. He did not feel any life magnetic field before, but that was not enough to prove that the other party was dead.

　　 And reading is different. If the target of reading is a person, and no attributes can be read, it is very likely that the other person is dead and has been dead for a long time.

　　 Magic Eye Warlock