"You guessed it right, well, these are all returned to you. Don't think that I am so stupid that you don't know why you locked me in this dark place in the first place. You old immortal, just spend the rest of your life here! Hi , It¡¯s all your Shi family¡¯s fault for provoking someone you shouldn¡¯t offend, hahaha, isn¡¯t this God helping me? By the way, those people around you are all dead, haha! ?" Shi Potian's heart thumped, and he wanted to ask again, but the door to the secret cell was slammed shut, leaving no chance for Shi Potian to explain. After all, a person who has no chance of making a comeback has no value at all. But after walking out of the Shi family's secret prison, Shi Yi's face immediately became respectful, because the person who rescued him from the darkness and three years of pain was the person in front of him who didn't know where. He came and didn't know where he was going, but he only knew his name - Duan Ling. This man who seems to be in a mystery doesn¡¯t even know how he should face it, no, I should say, how he should be grateful. Because he has helped him so much, this man named Duan Ling just asked him for one condition. Yes, it was just one condition, that is - to find a man named Yang Yi, who has the same name as him but is different. The surname is a man who is also imprisoned in the Shi family's secret prison. But it was a pity that when Shi Yi went there, there was only a dried corpse left in the room, and nothing else was left. The strong smell of corpses is not an unusual smell at all for the Shijia Secret Prison. In the Shijia Secret Prison, countless innocent people from Qiuju Town have died. Duan Ling could only sigh helplessly. Time and fate, he could not save Yang Lili and Yang Nana's father after all. "Shi Yi, please arrange a route to the imperial capital within three days. I will set off soon." "Yes, benefactor." Shi Yi did not feel the slightest sense of disobedience to what Duan Ling ordered him to get. , as if he was willing to let it go. [Dark Night Analysis] Shi Yi's thoughts came through, and Duan Ling laughed it off, but that's right. If you save a person in the most critical moment, it would be strange if he doesn't appreciate you. Unless you are the kind of person who is naturally cold-blooded or cold-blooded, you will have such indifferent thoughts. "Duan Ling, your skills at deceiving people seem to be getting better and better now. I really don't know how many girls you deceived when you were in the [Sinful World]." Duan Xue's voice came from Duan Ling's mind. came from among them. "Ahem, cough, cough, not much, not much." Duan Ling smiled awkwardly, his sister had the qualities of a housekeeper. "There aren't many, but there are also a lot?" Duan Xue's voice had an inexplicable meaning, "How will I live with so many sisters-in-law in the future! Have you ever thought that so many of your wives would bully your only sister?" "No, no." Duan Ling felt ashamed. Duan Xue had raised the issue to an ethical level, which really made Duan Ling feel very difficult to deal with. "Haha, silly brother, I lied to you!" "" Since ancient times, it turns out that it is not women who are difficult to raise, but younger sisters. ¡ ¡ ¡ ¡ After seeing the remains of their father¡¯s cremation, the Yang sisters hugged each other and cried. My father, whom I had not seen for three years, just disappeared. Duan Ling didn¡¯t hide anything from the two girls. He immediately told the two little girls about his whereabouts over the past few days. After all, the two little girls also expressed their worries about him. In fact, for Yang Lili and Yang Nana, their father, whom they had not seen for many years, was sometimes not as real as the Duan Ling in front of them. To a certain extent, Duan Ling has filled the gap in the position of the Yang sisters' father. Of course, after Duan Ling knew this through [Dark Night Analysis], the strange feeling in his heart made Duan Xue, who was hiding in the [Main God Space], snicker. It was so funny. When did his brother actually become a Cheap father? Is this what is called ¡®happy father¡¯ in the original world? Duan Ling immediately discussed his plan to go to the imperial capital with the Yang sisters, and the Yang sisters expressed considerable support. "Lili, you once said that you have heard about my treatment technology, but you don't know where it is specifically?" Duan Ling asked. "Well, I'm not very clear about the specifics. I just heard my father say before that only people from a place called the Divine Doctor Sect in the imperial capital can use the technology of healing through the release of energy. Are you not Duan Ling, a miracle doctor? Someone in the door? "Yang Lili"Some asked in confusion. Logically speaking, Duan Ling, who can use the legendary medical skills, should only come from that place. "I'm not." Duan Ling shook his head, but he was quite shocked in his heart. Could it be that in the underground world, there are people who can use powers or other abilities? Is there any necessary connection between this and the surface of the earth? "So big brother, where did you come from?" Little Nana came over with a face like a little cat while eating the long-lost ice cream. "Actually, I come from above." Duan Ling used the towel and lovingly wiped Yang Nana's dirty little face from eating ice cream, and pointed to her head. . "Ceiling?" Yang Nana felt very comfortable as Duan Ling touched her head after wiping her face and guessed. "Ha" Children's words are unbridled, children's words are unbridled. Duan Ling wanted to laugh loudly, this is the emotion a child should have. "Is Duan Ling a person from the surface?" Yang Lili looked at Duan Ling in surprise. "Hi? Nana, do you know the surface of the earth?" Duan Ling was curious. Could it be that the Yang family was so powerful in the past? "Well, I've heard of it, because when our Yang family was strong, we were said to have had contact with people from the Divine Doctor Sect. Those people claimed to be from the surface." Yang Lili could see that Duan Ling was very serious about this issue, so He tried his best to recall what happened in the huge Yang family when he was a child. But after saying this, there was a gap in Yang Lili's memory. "Duan Ling, I'm really sorry. My subsequent memories are quite fuzzy. I only remember these few things." "It's okay, it's okay, these things are enough!" Although Duan Ling remained calm on the surface, there was already a storm in his heart, and he was extremely excited. If those people came from the surface, then he would definitely have a chance to go to the surface! It seems that the trip to the imperial capital really shouldn¡¯t be delayed! "Brother, are you really from the surface? How can you live without air when you are on the surface?" Little Nana opened her eyes wide and was very curious. Although Yang Lili didn't say anything, she opened her eyes wide and looked at Duan Ling. Obviously, they were very curious about the people on the surface. It's like you're seeing angels from heaven on the surface of the earth. "Ha, even though it is on the surface, there is still air!" Duan Ling said. "There is air too? But without the protection of the blue barrier, the air will be lost and gone. How can it stay?" Yang Lili asked. In the underground world, Duan Ling finally understood that this blue barrier was actually the 'sky' of the underground world. The only difference was that the sky of this world was not air, but a substance similar to water. But the only difference between this substance and water is that this blue sky-like substance is not water, and its mass is much clearer than water. But it is this light thing that separates the hot core of the earth outside the [blue barrier]. At that moment, Duan Ling explained the knowledge about the atmosphere to the two little girls: "The surface of the earth is not a vacuum. In fact, there is an atmosphere. The earth is surrounded by this very thick layer of atmosphere. The main components of the atmosphere are There are nitrogen, oxygen, argon, and a small amount of carbon dioxide, as well as helium, neon, argon, krypton, xenon, radon and water vapor. This stuff is not much like the underground where Lili and Nana live. The difference is that the air density of the atmosphere decreases with height. The higher the altitude, the thinner the air. The thickness of the atmosphere is about 1,000 kilometers or more, but there is no obvious limit. The entire atmosphere shows different characteristics with different heights, and is divided into the troposphere, the troposphere, and the troposphere. The stratosphere, the mesosphere, the warm layer and the exosphere, and above that is the interstellar space. Well, that's basically it! " Duan Ling combined the knowledge given to him by the top student Duan Xue, and barely managed to avoid being in front of the two underground girls. What a clue. "It's really magical!" Yang Lili couldn't stop sighing, she was frightened by what layer, what layer, what layer. "Yeah!" Yang Nana agreed with her sister, but then she opened her eyes wide and said, "Brother, will you go back in the future?" "Yeah." Duan Ling nodded, this is a fact. "Then can my sister and I go to the surface with you?" "Ah?"