Qingchen smiled and said with a smile: "this is a layman. Although the control of fire by refining utensils is very important, don''t look at it. You can use the fire of the original God when refining utensils. The higher your cultivation, the lower your requirements for the fire of heaven and earth. On the contrary, the refining materials are the key. Since you know how to refine utensils, you also know these refining materials!"


    When Qingchen saw Han Bin nodding, he continued: "there are three kinds of refining materials. One is the bones of monsters, the other is trees as hard as iron, and the last is the ore that appears between heaven and earth. Dark gold stone is a kind of mineral. For ordinary monks, it is not wrong. For the former like us, it is rubbish."


    Green dust spread his palm, saw a flash of white light, a thumb sized stone appeared, and immediately said, "do you know what ore this is?"


    The stone is black and can''t see any ore. it emits a faint fluctuation of divine power, which looks very strange.


    Han Bin was sure that he had never seen this kind of ore. he shook his head and asked, "what kind of ore is this?"


    Qingchen smiled, then handed the ore to Han Bin and said, "feel with your Divine sense. What''s the difference between this stone and dark gold stone."


    Han Bin took over the black stone. His divine sense fell on the stone and felt it carefully.


    This feeling, Han Bin was surprised to find that this stone is unusually hard, which is by no means comparable to dark gold stone. Once, Han Bin knew that dark gold stone was the best ore among the refining materials. Now he understands that what Qingchen said is good. Dark gold stone is just a good stone, and there are many better ores than it.


    Han Bin took a deep breath and said, "the black stone is really good, but it''s too small."


    Qingchen really knows a lot about refining utensils. He waved his hand and said: "You are wrong. This stone is called black light stone. If you take it out at night, it will emit light. This stone is not the main material for refining magic weapons, but one of the auxiliary materials. If you add a little black light stone into the magic weapon, the magic weapon will be sharper than before. On the contrary, if you add more, it will not only be unable to refine into magic weapons, but also make the magic weapon run away Break... "


    Next time, Qingchen repeated what he knew, and then said, "I got this black light stone by accident. Anyway, it''s useless to put it on me, so I''ll give it to you. However, you''d better not use it at your current refining level, otherwise it will be a natural disaster."


    Han Bin was not polite either. He put the black light stone into the storage bag and said, "thank you."


    Qingchen was in a good mood. He was a little silent and said, "by the way, I just said that I would teach you what I have learned all my life. Let''s start now!" then he took out a jade slip and handed it to Han Bin. He said, "this jade slip records all the arrays I have studied over the years. You read it first. I will explain to you slowly where you don''t understand."


    Han Bin took the jade slips and looked at them quickly. His divine sense was input into the jade slips, and countless words appeared in his mind, all of which were records of arrays. Han Bin saw many arrays for the first time, and he was interested in them. He was even more excited when he saw them. When he saw them, he nodded frequently.


    Half a day later, Han Bin finished reading the arrays in the jade slips. He took a deep breath and said, "these arrays are very exquisite. I understand most of them. I don''t know where to arrange the eyes of the trapped God array."


    The trapped God array can be said to be one of these arrays that Han Bin is most interested in. He hasn''t understood how to arrange it after watching it for a long time.


    Qingchen frowned and looked at Han Bin in surprise. Subconsciously, he asked, "have you seen all the other arrays except this one?"


    Han Bin nodded and said, "I see."


    Qingchen smiled bitterly and looked at Han Bin as if he were looking at a monster. He said depressed: "when I got these arrays, I studied them for a long time before I understood how to arrange them. But you can see after watching them for a while. People are so angry than people!" when he said this, he paused and said: "The eye of this trapped God array is not in the big array, but on you. If you die, the big array will collapse."


    Han Bin was stunned. It was the first time he heard such an array and said, "if you don''t die after arranging the array, how can you control the array?"


    Qingchen seemed to know that Han Bin would ask this question and said in detail: "Trapped God array does not really trap the friar, but when you trap the other party, a powerful energy will be released in the array. This energy will enter the array setter''s body and instantly improve his cultivation to a certain level. If the array setter has divine liquid, his cultivation will be improved. Even if he meets a strong person whose cultivation is higher than a certain level, he can also be said to kill easily. Of course, if the other party''s cultivation is too high and leaves after arranging the array, the trapped God array can still trap the other party for a while. "


    After hearing this, Han Bin finally understood that the trapped God array is not a strong defensive force. The most important thing is that it can improve the cultivation of monks. If you encounter a strong person in the future, introduce the other party into the array and use magic to kill, you can really kill instantly. Even if you encounter a super strong person, you can escape when you trap the other party.


    Han Bin felt that he was almost talking. He moved his eyebrows, looked at the surrounding volcanoes, and then said, "green dust, where do you think it''s best to build a city?"


    Qingchen raised his head, looked around, then pointed to a valley and said, "it''s not a small area, and the heaven and earth aura in the air is also rich. If a city is built there, the city can accommodate tens of thousands of people at least." then he added, "In fact, it doesn''t matter where the city will be built. There is little difference in the richness of aura in the surrounding valleys."


    Han Bin didn''t answer immediately. He thought for a moment and said, "OK, build the city there!"


    They came to a mountain ten thousand miles away. They quickly cut the stones and put them into the storage bag. Cutting stones is very troublesome. They must be cut with sharp magic weapons, and each stone must be the same size, otherwise they can''t be stacked. Time passed slowly in cutting. Ten years later, enough stones were finally cut.


    They went to the place they had chosen and built the city. It took another ten years.


    The city was finally built. Together, they arranged a powerful array to gather the aura of the surrounding heaven and earth into the city.


    The surrounding heaven and earth aura has been built, and the speed of volcanic eruption has also slowed down. Qingchen''s current cultivation can even exert his magic power to control the time of volcanic eruption. Han Bin is not idle. He takes a lot of wood from around and builds a mansion. Then he builds several cultivation darkrooms in the mansion and arranges a powerful spirit gathering array.


    After all this, nearly 30 years later, Han Bin came to Zhu Ruoxue''s cave.


    At the moment, Zhu Ruoxue is still practicing. Her breath is much stronger than that of 30 years ago. It will take a long time to break through. If the city is not built, Han Bin will not wake Zhu Ruoxue up, but stay in the cave with her to practice. At present, the heaven and earth aura in the city is stronger than here. If she still practices here, it is a waste of time.


    Han Bin came down a few steps to Zhu Ruoxue, patted her on the shoulder and said softly, "Ruoxue, wake up..."


    Zhu Ruoxue opened her eyes. When she saw Han Bin standing in front of her, she quickly stood up and said, "husband, you''re finally back. Let''s practice together!"


    Han Bin shook his head and said, "no, we..."


    Zhu Ruoxue''s face sank. Before Han Bin finished speaking, he interrupted, "why don''t you practice with me?"


    Han Bin smiled bitterly, gave Zhu Ruoxue a look that let him finish first, and then said, "we have finished building the city. The spirit of heaven and earth in the city is stronger than here..."


    After simply saying it again, Zhu Ruoxue finally understood why Han Bin woke her up and apologized: "husband, I wronged you. I thought you didn''t want to practice with me!"


    Han Bin held her in his arms, stroked her long hair, smiled and said, "silly girl, why don''t I want to practice with you!"


    They left the cave and then came to the place where Li Yunfeng and others practiced. Their accomplishments have improved. They can''t see the level-1 friars of divine card. The lowest accomplishments are the level-2 friars of divine card. Most of those friars who were originally level-2 friars of divine card have reached the edge of breakthrough. If they continue to practice like this, it''s not difficult to break through to the level-3 friars of divine card 。


    Of course, Li Yunfeng and other friars who had already reached level 3 of the divine brand increased their accomplishments very slowly, and none of them reached the edge of breakthrough. The divine brand level 3 friars thought of the unusual difficulty of breaking through to level 4, which was a huge watershed, and many friars could not break through all their lives.


    Han Bin woke up the crowd and said in a deep voice, "gentlemen, we''re leaving here."


    They were all stunned. Obviously, they didn''t expect Han Bin to say such words. Zhang Dong pinched his fingers and said, "Han Bin, we''ve left before 30 years?"


    Han Bin nodded, shook his head and said in detail: "you guys, you misunderstood. We didn''t leave this volcano group when we left here. I built a city nearby, where the heaven and earth aura is stronger than here. If you go there to practice, you can break through the level 3 realm of divine card when you leave..."


    As soon as this remark came out, everyone was surprised and their eyes widened.


    Zhang Dong was more obvious. As soon as his pupils contracted, he was surprised and said, "Han Bin, you did what I said earlier?"


    Everyone wondered why Han Bin wanted to build the city. Zhang tie couldn''t help asking, "Captain, is this city built for us?"