After taking the bus three times at a time, at Charlotte''s repeated request, bum reluctantly bid farewell to the bus, and the party began to move towards London town.


    Of course, what really moved bum was not the next project to visit, but Charlotte''s promise: "Mr. bum, we still have enough opportunities to take the bus tomorrow!"


    As he moved towards London town, he was still in a state of excitement, just like "100000 whys", still asking all kinds of questions about magic bus.


    "Mr. Charlotte, can the bus be faster? The cement road is so smooth that I think its speed can be doubled... "


    "Mr. Charlotte, how did the big guy get up? Why is there black smoke behind it? Is this charcoal burning? But burning charcoal can''t make it run... "


    ……


    "Mr. Charlotte, how many lines does the public transport system that your excellency Renault has in mind? Will it circle the whole island of Odin? "


    "Mr. Charlotte, will Mr. Renault sell buses in the future? The Maxwell family is very interested in this. If we can, we are willing to order 10 buses at the price of 10000 jinnals. The specific price can be further discussed... "


    Charlotte was quick to answer some questions.


    "Mr. bum, I heard that the Lord once planned the road network of Odin island. In the future, the island will be built with" three vertical and three horizontal "roads, one inner ring road and one outer ring road. There will be a total of eight concrete roads. At that time, each road will have a bus line..."


    This grand plan immediately attracted the young people''s praise and yearning.


    For other questions, or temptations, Charlotte would simply avoid them.


    "Mr. bum, I''m very sorry. Your question is beyond my ability. The power system of magic bus is highly confidential. Even if I know it, I''m afraid I can''t tell you the operation principle."


    "Another point, please understand. I have received an order from the government administration department. During the visit, there will be a large number of magic machines. I hope you don''t get close to them. You''d better watch from a distance, otherwise the follow-up visit projects will be affected..."


    This answer made the boy feel depressed, but he had been psychologically prepared for it, so he soon adjusted.


    When he was 1km away from London town, bum could see the towering towers from a distance. In terms of their size, they were slightly smaller than the "magic tower" seen by teenagers at the wharf. Compared with the tall trees on the island, they were only half the height of the trees.


    This fact makes young people''s curiosity unprecedented. Mr. 100000 whys can''t wait to ask a series of new questions:


    "Mr. Charlotte, are those things magic hanging towers? Why are they so small? Are they also used to lift goods? "


    Charlotte glanced at him helplessly and replied:


    " yes, they are magic cranes specially used for lifting construction materials on construction sites... "


    The young man was stunned:


    "do you need to use a tower to build a house? What size house are you going to build? "


    Charlotte smiles and spits out four words:


    "big, big!"


    After getting close to him, bum habitually dropped his chin on the ground. He finally understood what "big, big"!


    This is a huge building. Although it is still under construction, we can see how large it will be after completion.


    The building complex is in the shape of "Hui". The length and width of the outer ring reach an amazing 150 meters, and the length of the inner ring is close to 80 meters. Dozens of hanging towers stand on the construction site, and the hanging arms rotate back and forth to put the building components in the designated positions, and then the workers install them.


    Dozens of magic vehicles are driving in and out of the construction site, unloading a lot of materials. The busy work of workers with yellow metal caps, running in and out in every corner, also makes the scene full of a high spirited atmosphere.


    The steel frame forms the framework of the building. Rows of dense steel bars are neatly arranged, forming a wall made of steel. The height is more than 15 meters, which seems to have a kind of shocking power.


    Bum had never seen such an amazing amount of steel in one place. He looked up at all this and couldn''t speak for a long time.


    Long term education made him very clear what all this meant.


    Just glancing at it, he roughly estimated that the total weight of all the steel bars was more than 6000 tons.


    What''s the concept?


    6000 tons of steel is enough to make more than 100000 sets of armor weapons and arm a powerful army.


    As far as he knows, the total annual output of iron and steel in a human kingdom is only 50000-60000 tons, which will be used by millions of people in the Kingdom, with only 10 kg on each head.And this sea tide collar can easily take out thousands of tons of steel to build a building.


    Is it too extravagant?


    This is not "too extravagant", but a luxury to the extreme. The steel consumption of this building is equivalent to 110% of the annual steel production of a human kingdom. In other words, a kingdom can only build 10 such buildings a year with all the efforts of the whole country.


    The tide collar is so powerful


    This territory is really amazing


    Then bloom heard Charlotte''s voice with a smile:


    "Mr. bloom, don''t you want to see the cement? There are several cement mixing tanks on the other side of the construction site. I''ll show you... "


    When he arrived near the mixing pool, the young man curiously stared at the large pits with a diameter of more than 10 meters dug out on the ground. The pits were full of gray mud like things. A machine was standing above the pit, and several metal rods were sticking out to stir in the mud.


    Bum saw the shadow of the rune on the surface of the machine. He started to look around the machine.


    But after he took a step, he felt that his shoulder was pressed down, and Charlotte''s voice appeared in his ear again:


    "Mr. bum, the mud you see is concrete, which is mainly composed of cement, sand, pebbles and water. Mix them evenly according to a certain proportion, and then mix for a period of time, and the concrete is finished..."


    "Look over there. The gray powder is what I call cement. It''s a very useful building material..."


    Bum''s eyes moved to the cement. After a glance, he lost interest. His eyes locked the machine again. In his opinion, this kind of machine that can rotate automatically is countless times more interesting than the powder that doesn''t pull ash.


    At the moment, the young man wanted to go near the machine and study it carefully, but Mr. Charlotte seemed to see his intention, and the hateful big hand had been tightly around his shoulder.


    Bum whispered in his heart: what a nuisance


    He had to stop and listen attentively to Mr. Charlotte.


    "Finally, the concrete is poured into the steel framework, which is the metal framework you just saw. After two days, the concrete will completely solidify and become reinforced concrete that is harder than stone."


    "At this point, the main load-bearing walls of the building have been completed, and the next step is to build other walls with bricks..."


    Next to him, geridge suddenly exclaimed in shock and asked:


    "what? Mr. Charlotte, do you think this mud will turn to stone? And it only takes two days? "


    Charlotte nodded positively:


    "of course, this is the magic of cement. In fact, two days is only a conservative term. What you see is the second generation of" quick drying cement ". According to experience, it will set completely in one day..."


    Bum also woke up at this time. He looked at the mud in the mixing pool in disbelief and asked:


    "is that concrete road really built by this kind of mud? Can soft mud really turn into stone


    Charlotte pointed out her right hand to the building in the distance and said with a smile:


    "Mr. bloom, there is concrete pouring there. If you don''t believe it, you can come and have a look tomorrow..."


    Bum swallowed a mouthful of saliva and made up his mind to see the rare event of "mud turned into stone" tomorrow. Charlotte''s words were so amazing that he couldn''t believe it if he didn''t confirm them with his own eyes.


    He looked at the building and tried to change the subject:


    "Mr. Charlotte, is this building a castle for Mr. Renault?"


    The castle covers such a large area, is so high, and consumes so much steel that its hardness is beyond imagination.


    Bum was convinced that even among all the noble castles, it was the most defensive.


    It''s just that the shape is a little strange. It''s a castle with four sides. It''s very rare


    Gaelic also nodded slightly. He also thought it was a castle under construction.


    However, Charlotte''s answer, let two people severely surprised.


    "Mr. bum, you misunderstood that this is just the most common residential building. Once the construction is completed, the civilians on the island will move in..."


    Bum gawked at the building, feeling that his three views had been completely overturned.


    Mr. Charlotte, are you sure you''re not teasing me? Or did I hear you wrong?


    But as soon as he saw garridge''s stunned expression, the boy found that he had heard it right, and his heart immediately filled with a feeling of absurdity.


    Who would build a house stronger than a castle for the common people?


    Is your Lord crazy?


    Charlotte didn''t seem to see the two people''s expressions, and said to herself:


    "I have seen the design drawings. This large residential building has five floors, with a total of 300 apartments, which can accommodate 1200 civilians. In the next year, the territory will go all out to build at least 20 large residential buildings, and the total population of London town will reach 25000 people..."With his narration, bum and geridge''s mouth opened wider and wider, and they looked at Charlotte with ghost eyes.


    Oh, my God, building 25 30000 people


    If a residential building consumes 6000 tons of steel, 25 buildings are 150000 tons of steel


    It will be finished in one year


    What is the special feature of Haichao collar? How many tons of steel can you produce in a year?


    They suddenly feel that the world they live in has become so strange


    Bum took a deep breath and asked a question that had been lingering in his heart for a long time:


    "Mr. Charlotte, why is your Lord so kind to the common people and let them live in such a house that only nobles can live in?"


    "I think cheap wooden houses are enough for the common people. Can the common people afford the stone houses? Is Mr. Renault willing to bear the cost? "


    Charlotte looked at bum in astonishment and said:


    "Mr. bum, why do you think this is a ''Noble House''? It''s just the most common reinforced concrete house with the simplest structure. The price is not as expensive as you think, and it''s not much more expensive than the common wooden house... "


    "As long as the civilians in the territory work hard, they can afford it. There is no need for the Lord to take out a copper coin at all..."


    Speaking of this, he quoted a sentence with profound meaning:


    "Lord once said in private," only the poor can live in tube shaped buildings, and the rich should live in villas.... "