However, when Wang Bin wanted to buy these two technologies in the system, he was reminded by the system that important customers entered his technology mall store.


    Seeing this, Wang Bin no longer hesitated, but directly purchased these two technologies in the system and exited the system.


    "Hello, shopkeeper, I haven''t seen you for some time. I can''t imagine that your style is still the same!" seeing Wang Bin appear in the shop, the middle-aged man in the shop smiled and said to Wang Bin.


    "Lao Huang, I didn''t expect you to come to our Tiangong technology store so free today. Do you need any goods?" Wang Bin said casually with a smile when he saw that the customer in his store was Lao Huang.


    Although there are more than thousands of worlds linked by the technology mall, in so many worlds, the time flow rate of each world is not the same. According to the size of the world, the time flow rate of each world is different.


    As Wang Bin''s world is one of the top universes, the flow rate in his world is very slow compared with that in other universes. Take Donald''s world before, the whole world level of their world is actually not low. The universe in Donald''s world is at least one billion light-years in size.


    However, the time flow rate of Donald''s world is much faster than that of Wang Bin''s world. In one month, Donald''s world has passed as much as a year, that is, more than ten times that of Donald''s world.


    Of course, among these customers he has, the time flow rate of many customers'' world is faster than that of Donald''s world. There is even a day in Wang Bin''s world, which has been a century, which also makes Wang Bin feel uncomfortable.


    However, fortunately, most of his customers, especially the main customers, do not have such a large proportion between the time flow rate in his world and the time flow rate in his world.


    Among such short-term customers, the time flow rate of Lao Huang''s world is the closest to that of Wang Bin''s world, but there is also a nearly double gap, that is, the past day in Wang Bin''s world and the past two days in Lao Huang''s world.


    It is precisely because the time flow rate in the world where Lao Huang and Wang Bin are located is the closest, so among so many customers of Wang Bin, Lao Huang is one of the customers with the best relationship with Wang Bin.


    "Yes! No, we have almost used the materials we bought from you, so we are going to buy some more from you!" old Huang nodded.


    "Thank you very much. By the way, Lao Huang, I don''t know how the golden Great Wall project you are responsible for is going. I think it must be going very smoothly with the support of the whole country in your world?" Wang Bin asked!


    After listening to Wang Bin''s words, Lao Huang did not immediately answer, but shook his head with a sad face, and then said: "Store manager Wang, the golden Great Wall plan I am responsible for is not going well. On the contrary, I have encountered a lot of resistance from all aspects. Even in some projects, it overlaps with the black Great Wall plan in the charge of Lao Du, resulting in the very slow process of these projects and even being directly dismounted.


    After all, compared with Lao Du''s technology, our own technology can''t be compared with them at all. Our own technology foundation is there. Many projects can''t make any breakthrough in a short time with our own technology, even with the strength of the whole country! "


    "In addition, there are many difficulties in other aspects. For example, the construction of civil air defense projects. I think you know the population density of our country. Naturally, there are many large-scale cities, and the difficulty of building large-scale civil air defense projects under so many cities is beyond my imagination.


    Most importantly, in the process of construction, the senior management of many provinces and cities do not understand our behavior. After all, we can''t tell them about the imminent invasion of alien civilization, and the large-scale construction of civil air defense projects will greatly touch the pockets and other interests of these people.


    Therefore, in the construction process, it is inevitable that some people will not cooperate, and even add various obstacles and troubles to the project! "


    After listening to Lao Huang''s words, Wang Bin thought for a moment and said, "Lao Huang! There''s no way. Your civil air defense project has touched the interests of too many people. In addition, you can''t disclose the reasons. Naturally, you will encounter great resistance. However, Lao Huang, when I think of it, everyone will understand your golden Great Wall plan!"


    "Ah! I hope so!" said Huang.


    Wang Bin and Lao Huang talked for a while. At the same time, Lao Huang gave Wang Bin the list of goods he wanted, and he quit Wang Bin''s Tiangong technology store.


    Wang Bin looked at what Lao Huang needed. He found that the quantity of goods Lao Huang needed was not small, with a full 50000 energy coins, of which about 30000 energy coins were for all kinds of special glass, and the remaining 20000 energy coins were special steel and various types of bearings.


    Although the quantity of goods ordered by Lao Huang is very huge, there is no pressure for Tiangong technology to complete such orders.


    Subsequently, Wang Bin also went out of the technology mall, returned to reality, and immediately asked Wang Xu to call relevant personnel in hardware and software R & D.


    And gave them the drawings and data he obtained from relevant aspects, and let them carry out research and development as soon as possible.


    After seeing these R & D personnel in hardware and software out of his office, Wang Bin also went out of his office and came to the laboratory to prepare to start building the aircraft remote control module and control system of UAV.


    Although Wang Bin also gave some things to the hardware and software R & D personnel of Tiangong technology before, what he gave to these R & D personnel is not the whole of the unmanned core, but only a small part of the word system and a small part of the hardware. Most of the remaining R & D work still needs to be completed by Wang Bin himself.


    However, when Wang Bin developed the remote control core of UAV and autonomous flight combat system in his own laboratory.


    In the aerospace laboratory not far away, in addition to the 150 hour durability test run, the verification test run of other projects has also begun, that is, to verify the safety of the engine under extremely harsh conditions.


    After all, whether it is a UAV or a manned aircraft, it is inevitable to encounter all kinds of extreme weather and extreme environment during flight, and even the engine is hit by birds and other things.


    The operation of the engine in these extreme environments or after impact is directly related to the safety of aircraft and personnel. Therefore, generally, the aircraft engine will be verified in relevant aspects when it is developed. Naturally, there is no accident with the engine developed by Wang Bin and his Institute of Tiangong technology, These aspects also need to be verified.