On the 10th day of September, the opening ceremony of the Tang Lecture Hall was held, and Li Shimin led the 16th General Wei to attend the ceremony.On the day of the opening ceremony of the lecture hall, Luo Yunhe finally burned the glass with high transparency.The success of the firing of the glass was a bit of a surprise.Originally, Luo Yunhe used good charcoal to burn the furnace.But after all, he was a person who had been an alchemist, and the firing of glass was still in the experimental stage, so Luo Yunhe and those Taoist priests liked to add all kinds of ores to the furnace very much.One day, Luo Yunhe added a black ore to the furnace, and the ore burned like charcoal.This phenomenon aroused Luo Yunhe's interest, and he added more black ore to the furnace.Sure enough, these black stones can burn, and the fire is more fierce than charcoal.Luo Yunhe hurriedly reported his new discovery to Zhao Yunze.After Zhao Yunze saw the black stone displayed by Luo Yunhe, he immediately wanted to scold himself for being kicked in the head by a donkey.This is coal, and the heat released by coal combustion is much greater than that of charcoal, which can make the temperature in the furnace higher.It's still a traverser in vain, I didn't expect this.In the glass factories and steelmaking factories of later generations, which one was charcoal-burning Zhao Yunze hurriedly asked Luo Yunhe where he got the coal.Luo Yunhe only said that all the materials they used were provided to them by the people from the logistics department.Zhao Yunze hurriedly asked the officials of the logistics department who were responsible for purchasing experimental glass materials.The officer thought for a moment, and then explained how he had bought the black stone.Some of the logistics supplies for Jiangwutang on weekdays are purchased from Chang'an City, and some are purchased from nearby villages.According to the logistics officer, the black stones were bought from a village near the lecture hall.The people there said that there was this black stone in a ditch in their village, and they all used it to make a fire for cooking.The logistics officer saw that this kind of black stone was much cheaper than charcoal, so he bought some and came back, planning to try whether it was easy to use for fire first.Somehow, a few black stones were mixed into the ore for those Taoist experiments, and they were burned by Luo Yunhe in advance.Zhao Yunze was surprised to hear that there was coal near the lecture hall.He immediately asked the logistics officer to take him on a field trip to the village where the coal was found.The mountain village is seven or eight miles northwest of Wutang, and the ditch where coal is produced is not large, that is, it is thirty or forty meters wide, and the riverbed is only about twenty meters.According to the people of the village, no black stones were found in the river before.This summer, when the river swelled and widened, the black stone was washed away by the river.A urchin in the village accidentally discovered that this black stone could burn, and the people in the village began to use this black stone to burn the fire and cook.God help me, Zhao Yunze immediately discussed with the people in the village, asking them to mine coal and sell it to the martial arts hall.The people of the village did not allow it.Zhao Yunze wanted to find out the reserves of this open-pit coal mine, but he didn't know the survey technology at all, so he had to give up.Now, Luo Yun and them don't need much coal, so let's buy it from the people in the village first, so that they can also earn some money to supplement their families.In the future, when the glass is successfully fired, or even when the steel is made, the amount of coal used will increase, and then the mine will be officially built and mined, and the people in the village will be hired as coal diggers.This is also a matter of mutual benefit.That ditch was originally a borderless land, and it should be no problem to build a coal mine in the name of the imperial court.However, it is estimated that the reserves of that coal mine will not be too large, and if there is a huge open-pit coal mine here, it will not be possible for future generations not to be discovered.Perhaps, this small coal mine was hollowed out very early in history.With coal, Zhao Yunze asked Luo Yun and them to switch to coal burners.After Luo Yunhe experimented with two or three furnaces, he finally mastered the technology of firing glass, and successfully burned the glass with high transparency.What Zhao Yunze was holding in his hand was a small piece of glass from Luo Yun and "Xianbao".This piece of glass is twenty centimeters square, and the thickness is about half a centimeter.According to Luo Yunhe, it is made by pouring the burned molten slurry on a smooth bluestone slab to cool it.Zhao Yunze held this piece of glass in front of his eyes and looked at the distant scenery through the glass.Well, it's still relatively clear.It's not yet completely transparent, but it's at least more than 95 percent transparent.It should be no problem to use this glass to make telescopes, mirrors, etc."
Old Luo, you are doing a good job" Although Zhao Yunze was overjoyed in his heart, he pretended to be very indifferent on his face and said to Luo Yunhe."
Then, what Lord Zhao said before is to exonerate us" Luo Yunhe immediately asked Zhao Yunze."
Don't worry, so-and-so does what he says.You have burned the glass, and this credit is enough for the court to agree to take off your sins and restore you to your status as good citizens. ”Zhao Yunze smiled slightly."
Thank you, Lord for taking care of you," Luo Yunhe looked excited."
However, even if you are restored to being a good citizen, you will continue to stay here and burn glass.Know this in your hearts. ”Zhao Yunze said to Luo Yunhe again."
Your Excellency, please rest assured, you are just driving me away now, and I won't leave.I've been dealing with the stove for half my life, and I've only found the true joy of burning the stove until now.Burning glass is much more interesting than alchemy.Now, the medicinal jade of those people in the Western Regions can be compared to the glass of our Central Plains. ”Luo Yunhe said excitedly."
Hehe, Lao Luo doesn't do bad things anymore, it's really much cuter."
Zhao Yunze joked with Luo Yunhe."
Well, don't bury so-and-so, my lord."
Luo Yunhe was embarrassed."
But Lao Luo, you will rarely pull Li Yu and Fang Ting to tell fortunes to others in the future.If you really know how to tell fortunes, why didn't you calculate the calamity of your own fate" Zhao Yunze taught Luo Yunhe angrily.Fang Ting is the deacon of the logistics department of the Secret Service, and she occasionally comes to see Luo Yunhe and burns glass, Zhao Yunze has seen Luo Yunhe and show Fang Ting palmistry.As for Li Yu, she is an idle person, and it is so fun to burn glass, it is strange that she doesn't join in the fun.Luo Yunhe also showed Li Yu palmistry, and coaxed the little girl to giggle with a mouth."
Hehe, so-and-so is just busy to relieve boredom."
Luo Yunhe explained with a sneer."
Fart, why don't you tell the fortunes of those men to the two women.Lao Luo, it's not important to be disrespectful to the old. ”"I'm not going to do this again."
After a little silence, Zhao Yunze said again: "Since the glass has been successfully fired, let's try to make glassware again."
Do you remember the methods of grinding glass and blowing glass that I told you before?"
"Remember to remember" Luo Yunhe nodded busily."
Then try to make a mercury mirror first, and then make a telescope.When these two things are successfully made, try to make other utensils. ”Zhao Yunze advised."
Don't settle for the status quo and try to make the glass as transparent as possible.It is best to burn completely transparent glass. ”"No":