Zhu Youxiao and the shopkeeper politely talked for a while about the advantages and disadvantages of this kind of candle, and then sold all the candles in the entire store, saying that they would go back and try whether it would be good or not.

Out of the store, Zhu Youxiao said to Song Yingxing: "Old Song, do you know how useful this kind of thing is? ”

Song Yingxing was a little puzzled, so he had to reply: "I don't know, I only heard that when the war was fought, some people used this fierce fire oil to defend the city, saying that if it was poured down and then ignited, it could burn for a long time, and the enemy could not attack from the city wall there, but he would also be dizzy by the strong oil and gas, and it seemed that he didn't use it too much." ”

Zhu Youxiao said: "Tomorrow, you will send people to Yanzhou, so that the local officials can find craftsmen who make candles and refine these fierce fire oils, especially the masters of production, this thing will be very widely used in the future, and we will start to study its uses now." ”

In fact, Song Yingxing didn't need to go to Yanzhou in Shaanxi at all, and found the candle making factory on the outskirts of Beijing the next day. The seemingly loyal and honest shopkeeper actually deceived Zhu Youxiao, but this is also understandable, who wants to let their customers go to Shangjia to buy goods? Isn't this smashing your own job?

Song Yingxing went to the Daming Royal Trading House early the next morning, and he found the big shopkeeper, who knew Song Yingxing, because he went to visit Song Yingxing with Niu Jinxing, and knew that he was only his biggest God of Wealth, and he must not be offended. Waiting for Song Yingxing to explain his intentions, the big shopkeeper didn't say a word, and directly led Song Yingxing to the candle-making workshop, if he didn't even know this information, the big shopkeeper would have to be scolded by Niu Jinxing and even his ancestors.

When he arrived in a remote village in the suburbs, Song Yingxing finally saw this so-called candle-making workshop, where a large cauldron was burning, and several people scooped out the oil on it and poured it out, and then used the middle part to make candles.

Song Yingxing didn't ask these people in detail, but just told them that he had something to discuss with them, and if he delayed their work, he could compensate them for their losses, and then Song Yingxing showed his identity. As soon as these people saw that Song Yingxing was a big official, they didn't care what else to say, and they followed Song Yingxing to the capital one by one, and by the way, they also brought a large barrel of crude oil.

After Zhu Youxiao saw this barrel of crude oil and these people, Zhu Youxiao wanted to inquire carefully about how oil was refined in this era, but the result was very disappointed, they transported the crude oil from Yanzhou in oil barrels, and then burned it in a cauldron. Zhu Youxiao warned them not to do this in the future, in case of fire, it would become a big trouble, and even water could not extinguish it, so they could only bury it with sand. Those people were staring at each other, in fact, because there was a fire in Yanzhou, and the surrounding people did not allow them to refine, so they took the trouble to transport the crude oil directly from there.

Seeing that these people had no use value, Zhu Youxiao directly asked people to pay them some silver, which was regarded as the price of the barrel of oil, and left with joy for those few jobs.

After sending away the unrelated personnel, Zhu Youxiao asked Xu Guangqi, Sun Yuanhua, Bi Maokang, Lei Mingtian, Cheng Tianying and Zhu Ling to come over, plus Song Yingxing. Sun Yuanhua has been given by Zhu Youxiao to the Daming Institute of Technology to assist Xu Guangqi in managing his daily work, as for the matter of fighting in the army, I am afraid it will not have anything to do with him in the future, and now let him participate in the refining and extraction of oil, which is the first step to completely integrate him into the research system.

Zhu Youxiao asked these people to sit next to a square table, this house is a small laboratory of Zhu Youxiao, when he is idle and has nothing to do, or when he misses his previous life, he will run to this room to do some small experiments and experience modern life.

Zhu Youxiao's purpose today is to give some modern popular science education lessons to the cattle of this era, but this knowledge still needs to be kept secret from missionaries and Westerners, although Xu Guangqi believes in Christianity, but he is even more loyal to the Ming Dynasty, so there is no need to keep it secret from Xu Guangqi, but others are not necessarily.

Zhu Youxiao looked around and said slowly: "Yesterday, Master Song and I went to our Daming Institute of Technology, went around a big circle, and saw a lot of inventions and creations, but these are far from enough, many problems we encounter in life still need us to continue to study and discover, to solve the problems we actually encounter."

"The questions I am going to talk about need to be highly confidential, and it is not easy to say when to decipher, and in the future, this knowledge can only be taught in the Advanced Research Institute, which is what we are about to set up within the Daming Institute of Technology, called the Daming Academy of Sciences, which is our highest academic research institution.

"Everyone will be awarded the life lord of the Ming Dynasty in the near future, and they will rest with the country, as long as they do not betray the country, they will not be punished by death, and the succession of the title will be related to academics, and everyone will become the backbone of the country and enjoy the highest honors. Is everyone willing? ”

"Yes, I do." Almost unanimous answers, and without any hesitation.

Zhu Youxiao smiled and said, "Then let's do a small experiment now, first mention everyone's interests, these are all things that I usually don't have to do by myself." ”

Next, Zhu Youxiao took out a group of galvanic batteries assembled by himself, it should be said that it is a very simple chemical battery made of zinc silver with salt water, which is something that later generations of primary and secondary school students will do, using zinc rods as cathodes, silver rods as anodes, a small glass pool in the middle is filled with salt water, and then connected to two silver wires, but this is all dipped in tung oil, which belongs to insulated wires, because silver has the best conductivity, anyway, Zhu Youxiao has silver, so he uses silver wires to make wires, which is the simplest primitive chemical battery.

Among these people, Zhu Ling is the youngest, and Zhu Youxiao also likes to kick his ass the most, so he smiled and put the two wires in his mouth, so that everyone must look carefully. Then let Zhu Ling also put it in his mouth to see how he reacted.

"Ah," Zhu Ling shouted, and spat out the wire. Zhu Youxiao picked it up and wiped it clean, and handed it to Lei Mingtian, there is no doubt that Lei Mingtian also screamed. Next, let Sun Yuanhua try it, Sun Yuanhua didn't understand what this meant, and he screamed.

Song Yingxing didn't use Zhu Youxiao to hand it over, so he picked it up and wiped it clean, and gently put it in his mouth, nothing happened. Xu Guangqi smiled and did the same, but nothing happened.

Zhu Youxiao asked Zhu Ling what he felt, and Zhu Ling said: "Your Majesty, I put these two silver threads on my tongue, and immediately felt as if they were pricked with a steel needle, but what I am curious about is that you and Lord Xu and Lord Song are all right." ”

Lei Mingtian and Sun Yuanhua didn't need Zhu Youxiao to ask, and the answers were the same. At this time, Song Yingxing put the two silver threads in his mouth at the same time, and the result was the same as the three of them, he screamed and spit out the silver thread. Xu Guangqi also wanted to try it, but Zhu Youxiao stopped him with a smile, "Mr. Xu, don't try again, the result will definitely be the same." No matter how many people experiment, it's the same. ”

Next, Zhu Youxiao took out a miniature DC motor made by himself, which abounded in later generations, and Zhu Youxiao's own scrap yard has countless such things, and there is no difficulty in making a simple miniature motor. After Zhu Youxiao connected the wire, let everyone look at the motor, gently close the switch, and the micro motor will rotate immediately.

Next, Zhu Youxiao untied the thread of the micro DC motor, installed a small handle, fixed the motor to the table, or let Zhu Ling pinch a silver wire with both hands, and shook the handle vigorously, there is no doubt that Zhu Ling screamed again, which was much more beautiful than last time, and scared Zhu Youxiao far away, for fear that Zhu Youxiao would experiment with him again.

Zhu Youxiao saw that Zhu Lingzhen was frightened, so he stopped teasing him, but connected the wire to the two hollow copper balls, approached the two copper balls to a certain distance, and then put down the curtain, shook the motor handle again, and in an instant, blue sparks were released between the two copper balls, and even golden lightning appeared, accompanied by a crackling sound, which stunned everyone.