Lu Haoyu invited everyone over again, and after being rescued by the soldiers at noon, he invisibly felt that his relationship with the soldiers had become closer.

This time he didn't show off, he came directly to dry goods, and divided the grinding stone into five grades, divided into five categories: coarse grinding, grinding, fine grinding, initial polishing and fine polishing, according to the definition of science and technology essence books, guide everyone how to better polish tools, from coarse to fine, level by level polishing.

For the satin body method of opening the cup with one hand, Lu Haoyu started from his own experience, and explained several times more patiently, under his guidance, there were two fighters who mastered the preliminary satin body method, although there was a lot of gap between him and him, but I believe that if you practice for a long time, you can practice to Lu Haoyu's level sooner or later.

In addition to the classification of grinding stones and the teaching of the satin body of basic strength, Lu Haoyu spent half of his time planning for the swimming test at night.

He was unable to move his limbs in a wide range of the water, especially his right hand and right foot, so he decided to make himself a swimsuit like a wetsuit in order to be able to pass the swimming test at night.

Regarding the selection of diving suits, in fact, Lu Haoyu took a lot of effort, and there was no cloth and silk to be found in the corps, otherwise the soldiers of the whole regiment would only have suits and clothes in the flesh machine.

Fortunately, there was a lot of idle rubber in the second row, and no one paid attention to it at all, so Lu Haoyu had the idea of making a swimsuit or diving suit.

In fact, rubber has a wide range of uses, and it is relatively precious, but the steel bar array of the college entrance examination does not use rubber at all. Originally, with the friendship that Lu Haoyu had just established, it was not difficult to get some rubber, but now he felt a little embarrassed, after all, people had saved him, and now he had to squeeze other people's materials if he didn't pay off that kindness, which was not something he could do.

Looking at the pieces of rubber, Lu Haoyu suddenly had an idea, the tentative preliminary plan in the morning was not further implemented, the reason is that the wood is easy to rot after being blistered, which will make the formation invalid, but if the wood is wrapped in rubber, this risk will be minimized, at least in the short and medium term floods, it can still be carried over.

So, he called the second platoon leader and several backbone squad leaders and said his thoughts.

After listening to Lu Haoyu's opinion, the science and technology soldiers in the second platoon were shocked.

I can't help but be shocked, the scientific and technological research and development work of the Heavenly Dream Regiment has always been taught by the master Ye Guchen himself, although there are inventions and creations among the soldiers, but they are all small aspects of actual processing, as for the research and development positioning in the general direction, no one has ever dared to put forward it, and it is also because they know almost nothing about the field of science and technology.

For a long time, the development of science and technology in the Heavenly Dream Regiment has relied on the technology excavated by Ye Guchen from the "Love Crazy 100", which is transmitted to the soldiers of the science and technology company in disguise, and the master's scientific and technological knowledge is above all else, and the soldiers have formed this kind of directional thinking, and now a 9527 science and technology commissioner has been born, so that the scientific and technological consciousness they have just established has been constantly broken barriers.

"Is that okay? Our rubber simply could not be used for processing and did not have the consent of the owner. "The second platoon commander was a little worried.

"Time is pressing, and when there is pioneering progress, it will inevitably affect the overall delivery time of the big array. Last night, when the master appointed me to come to the third company, he explained that I had the right to develop first. After some progress has reached a certain level, communicate with him to confirm the final plan. ”

"In this way" The second platoon commander hesitated, and the soldiers also frowned, after all, Lu Haoyu had damaged the three major artifacts, and this shadow had never been erased.

"I think so, this afternoon, everyone is still in accordance with the previous plan to build and prepare tools, as well as the infrastructure of the steel array, as for the plan to add rubber to the steel wood array, this is just a preliminary idea of mine, maybe not well thought out, let everyone laugh. In the afternoon, I tried to do it alone, and when I had some results, I discussed the next plan with the master. ”

Lu Haoyu said very reverently, and the second platoon commander was deeply apologetic, in addition to providing him with enough materials, he also arranged two soldiers to act as assistants for him, after all, everyone could see that the hands and feet of the recruit 9527 did not seem to be very useful.

In this way, Lu Haoyu got some high-grade stacked cloud wood and steel bar substrates from the second row, and he also borrowed the only heating furnace in the second row.

This furnace is prepared for forging steel bars. Lu Haoyu didn't stop, ordered the two soldiers to throw the steel base material into the heating furnace for refining, and then took out the axe and prepared to process the rubber base material alone.

"Why do we smelt the rebar substrate, do you know how much work we went into creating these rebars?" The two warriors were obviously reluctant to do this, and instantly remembered Lu Haoyu's aura of "King of Destruction".

"There are too many impurities in these steel bar blanks, which are not suitable for the formation of a large steel bar array, and if they are forcibly applied, the durability in the water will not be high, and it will even lead to the collapse of the entire large array."

The two warriors were skeptical, but still refused to move.

"In this way, we only smelt two sections of rough steel bar, and add some scrap steel, even if my plan fails, it will not have much impact on the overall situation, what do you think?"

Finally convinced the two warriors, Lu Haoyu, while directing the warriors to warm up the steel, he took out a knife and an axe, and with the help of Hou Xiaoxian, began to cut natural rubber.

Rubber belongs to a discipline of secondary science and technology in the essence of science and technology, and as early as the night before yesterday, he downloaded and fused it into his memory.

Natural rubber cannot be processed directly as a material, and usually needs to be processed and used only after plasticization. The large pieces of rubber in the second row are derived from the materials stored by Ye Guchen, not natural rubber to be precise, but rubber that has been processed and plasticized, but the degree of plasticization is limited to humans, not small soldiers.

For human beings, this is a small piece of rubber sheet with excellent plasticization, but for Xiaobing, it is a kind of rubber raw material that cannot be processed coarsely, and human technology cannot be applied to Xiaobing, whether it is agriculture, forestry, animal husbandry and sideline fishery, this is the case in almost all fields.

Therefore, there are two sets of scientific and technological systems between humans and small soldiers in the military universe, and even the main direction of human research is not their own technology, but small soldier technology. Even the content of the college entrance examination is a battle between small soldier regiments to defend the city, and the Xuanwu Empire is an obvious example.

With the help of Hou Xiaoxian, Lu Haoyu used an axe to divide the rubber material layer by layer, and the polished axe was extremely sharp, making it easy to cut the rubber, and then instructed Hou Xiaoxian to put layers of plastic raw materials on the heating area of the smelting open-hearth furnace to bake. His purpose was to refine the rubber and mold it to the point where it could be used by small soldiers.