The two of the ordnance supervisors got Li Xiang's tiger squat cannon design drawings and a new gunpowder formula, and they were overjoyed, if this cannon can be successfully manufactured, it will greatly improve the combat effectiveness of the Song army, there is no doubt about this, the two of them are experts, naturally understand these truths. Pen, fun, and www.biquge.info

Emperor Lizong did not have much time to give the weapons superintendent, and asked them to come up with sample cannons within three months and complete mass production in six months, after all, the Mongol Empire was about to reach Sichuan, and the Great Song army was also ready for a big battle with the Mongol army.

When Wang Daquan and Shen Rong of the Ordnance Supervisor left, Li Kang also stood up and wanted to retire, but Emperor Lizong suddenly asked: "Li Aiqing, how is the new toilet you are responsible for?" Tell me about it! ”

When Li Kang saw that the emperor asked, he had to answer truthfully: "Back to the emperor, since Weichen was in charge of this matter, he has ordered Xiu Neisi to make more than 100 flush toilets, and to carry out pilot projects in Xiu Neisi and several other places to build new toilets and biogas digesters. Nowadays, several biogas digesters have started to produce gas, and each small biogas digester can be used by more than a dozen people for cooking and bathing in hot water! ”

Emperor Lizong said happily: "Oh, it seems that Aiqing really didn't slack off, this matter is done well!" Since the experiment was successful, then seize the time to build a new type of toilet and biogas digester into the palace, so many people in this palace can build a few more large biogas digesters to see how much firewood can be saved! ”

Li Kang hurriedly responded loudly: "Yes, Your Majesty, Weichen will do his best to handle this matter!" ”

Emperor Lizong yawned: "Alas, I am also sleepy, so you can go back!" ”

Li Kang's father and son said goodbye, and when they arrived outside the palace gate, Li Xiang asked: "Father, the child has recently researched a new gadget, and when the time comes, it will be made and matched with the biogas digester, which is guaranteed to make the emperor's eyes shine, and also let thousands of families in the Great Song Dynasty benefit!" ”

Li Kang was no longer too allergic to Li Xiang's new invention, and said with a sigh: "Xiang'er, it's hard for you!" I also have to take the imperial examination, and I have to help my father. You say that this biogas can be useful in addition to making a fire to cook and boiling water? ”

Li Xiang nodded and said, "Yes, father!" Haven't you ever wondered why this biogas can be used for lighting if it can be used to make a fire? ”

Li Kang said suspiciously: "Xiang'er, my father has also personally tested the biogas, the flame is light blue, if it is used for lighting, the brightness is not very high, and it consumes a lot of biogas!" ”

Li Xiang laughed when he heard this: "Father, you are right! It is true that the flame of biogas combustion cannot be used directly for lighting, but what if that flame is used to burn another material that can glow white? Then you can use it for lighting. ”

Li Kang seemed to understand the key to it, and said happily: "Ah, that's true, it seems that the father is indeed old, and he didn't expect to be on that layer at all!" Okay, now you go with your father to Xiu Neiji, and my father wants to think about what kind of biogas lamp my son invented. ”

Li Xiang nodded and said, "Okay, father, I also want to do a test to see if it can succeed!" ”

It was done with a super 3D printer, Li Xiang had already printed a biogas lamp, and when it came to the official kiln of the Xiu Nei Division, Li Xiang saw a newly built toilet, which his father was responsible for organizing the construction, but he didn't expect it to be built so quickly, and Li Xiang had to admire his father's ability to do things.

As for Li Kang, he also knows that his son can always bring him unexpected surprises, and this time should be no exception, so he is also looking forward to what his son is talking about what the biogas lamp looks like.

After calling the Hu Steward and two craftsmen, Li Kang said to Li Xiang: "Xiang'er, quickly take out your biogas lamp, and let the Hu Steward arrange someone to do the experiment, after all, this biogas is still dangerous, don't hurt you!" ”

Seeing that his father was worried about his injury, Li Xiang was also moved in his heart, he nodded, and took out a few things from his arms, whether it was Li Kang or Hu Guan, they were all stunned, are these things the so-called biogas lamp?

Li Xiang touched out something, there was a transparent glass lampshade, a fiber gauze cover, and a nozzle lamp head, a pilot tube, a nozzle joint and a hook, these large pieces were not assembled, Li Kang and Hu Guan of course they couldn't understand it.

At this time, the super 3D printer in Li Xiang's body presented the assembly method of the biogas lamp, and Li Xiang followed the method provided by the super 3D printer, like magic, and installed it in a few minutes, of course, the glass lampshade has not been installed at this time, because the biogas lamp must be burned through the fiber yarn cover before the glass cover can be installed.

The biogas lamp is hung in the middle of the house, and the biogas is delivered to the lamp head through a gas pipe, which can be ignited by opening the control valve and ventilating.

Li Kang looked at this strange biogas lamp in wonder and asked, "This lamp is completely beyond imagination, how can it be illuminated when it burns like this, and the flame is downward?" ”

Li Xiang smiled and said, "Father, you'll understand later!" Okay, now ask the manager to turn on the biogas switch and direct the biogas to the lamphead. ”

Steward Hu nodded, ran over and opened the valve in person, and Li Xiang said again: "Now please ask this big brother to help me light the fire." ”

A craftsman carefully placed the burning stick under the lamphead, only to see that the fire ignited with a single blow when it met the mixture of biogas and air emitted by the lamphead.

The gauze cover was blown up, and it was slowly blown into a circle, and the gauze cover also changed from black to white during the molding process, this strange phenomenon, Li Kang and Hu Steward saw it for the first time, and everyone widened their eyes and looked curiously at the changes in the biogas lamp.

Li Xiang ran over again, adjusted the air intake, so that the mixing ratio of biogas and air was more suitable, sure enough, after a while, the flame burned more violently, and the gauze shrank naturally under the high temperature and finally made a bang, which frightened Li Kang, but saw that the methane lamp actually emitted white light at this time, and I don't know how many times brighter than ordinary oil lamps, and the whole room was illuminated as daylight.

When Li Kang saw this magical scene, he couldn't help but say: "This, this biogas lamp is too good, even the ten big lanterns in the palace can't compare to it!" ”

Li Xiang also said happily: "Father, this biogas lamp has succeeded once, it seems that our luck is really good!" Butler, please turn off the biogas, and when the gauze cover cools down, I will install this glass cover again, so that it can protect the gauze cover, prolong the service life of the gauze cover, and prevent moths and other insects from damaging the gauze or the wind from blowing through the gauze cover. ”

Li Xiang is also very satisfied with this biogas lamp, its lighting effect is equivalent to a 100-watt electric lamp, in ancient times it will definitely be able to be popularized and applied on a large scale, especially in the palace, if the biogas lamp is used, the emperor will be happy!