Gu Shi ate at home at noon, and took a nap for more than half an hour, until the sun quietly turned west, and then went out unhurriedly.

After crossing the Oujia River, Kankan approached the merchant village, he took his daughter and left the main road, followed the ridge in the field around the small half circle outside the village, avoided the noisy flowing water feast in front of the merchant gate, and entered the house directly from the backyard door. After asking a few questions from someone, he handed over the few land deeds and house deeds he brought as a gift to Xiao Cicada and asked her to find Yue'er and Erya by herself. Xiao Cicada knew that her father was going to talk to Shang Cheng about some important things, so she sensibly left first.

When Gu Shi walked to the back garden, he heard that Shang Cheng had already greeted him with Jiang Jian and Yang Heng at the corner gate.

Shang Cheng let him into the grass pavilion and sat down, poured him another cup of tea and put it in front of him, and said with a smile: "Why are you here too?" In the morning, I heard that you sent someone to bring a gift, and I guess you won't come. ”

Gu Shi replied absentmindedly. As soon as he walked into the grass pavilion, his first sight landed on the large wooden plate with black lacquer and gold painting in the middle of the stone table. The wooden plate is covered with a thick layer of purple sauce-colored velvet; On the top of Zhangrong, there are more than a dozen utensils made of large and small water glaze. These water glasses are obviously from the hands of skilled craftsmen, some are shaped like birds fluttering their wings and soaring, some are shaped like animals dancing with their heads high, and two pieces are clearly paperweights and pen holders; Between these objects, there are also a few glass beads scattered like pearls, all of which are crystal clear and naturally created. As the human body tilts and wanders, a brilliant ray of colorful light will burst out on the utensils from time to time, but it will suddenly disappear, which is difficult to understand......

Gu Shi's eyes stared at the objects and utensils without blinking. After a while, he looked up and asked, "All this glass?" ”

"yes, it's all made of glass." Shang Cheng said. He turned his head and glanced at Yang Heng, and added, "It's called 'glassware' now." One by one, this is the name given today. ”

Yang Heng said with a smile: "A few days ago, the Ministry of Industry presented sixteen boxes of glassware to today, and the Son of Heaven was happy, and immediately wrote 'glassware', praising 'Le Huan Bing's heart is in the sky, and the song is ingenious in the world'." ”

Gu Shi smacked his tongue and shook his head, and his mouth made a "tsk" sound. The Son of Heaven himself named it, which is a great honor! He had to sigh that the glass of the Ministry of Industry came at the right time. Just looking at these glasses in front of him, he knew that this battle in the court Zhang Pu was bound to be a big victory! Those officials who took the lead in impeaching the Ministry of Industry and Chang Xiu, one is counted as one, and no one can escape the charge of "framing and slandering colleagues for no reason", and what awaits them is either demote and retain or demote to a foreign commission; Those who flock to the top can't end up with any good, even if the law doesn't blame the public, and they can't suffer any big losses in front of them, but if they want not to be settled by others, they can only stop and admit their mistakes; There is also Han Yi, deputy minister of the Ministry of Ministers, he has been secretly competing with Zhang Pu for the position of the left minister, when the hundred officials impeached the Ministry of Industry, he also said some words that added fuel to the fire, now, he doesn't want to count on the position of the left minister, and the possibility of entering the right minister is also very small, whether Shangshu can continue to do it is two words, one by one, maybe he will soon be promoted to a scholar of Wenyingdian University......

He suddenly asked Yang Heng: "Gongdu," he has always been polite to Yang Heng, and has always called Yang Heng's cousin, on the one hand, because of Yang Heng's background in the seventh year of Dongyuan, and on the other hand, because Yang Heng has a good daughter. He asked, "One by one, why can't Chang Wenshi come by himself?" ”

Yang Heng hesitated.

"Chang Wenshi has a lot of things, so I don't have time to come." Shang Cheng explained to Gu Shi for him.

"How busy can he be?" Gu Shi said with some disdain. He was a little unhappy for Shang Cheng, and at the same time felt worthless for Shang Cheng. How much did the glass help the Ministry of Industry and Chang Xiu, and how much did it help Zhang Pu and Zhu Xuan? Zhang Pu cleaned up the opponent and stabilized the position of the left minister, Zhu Xuan opened the way for the investigation of the hidden field and the treacherous households, the Ministry of Industry and Chang Xiu had both political achievements and achievements, only Shang Cheng got nothing, and was involved in this court dispute, and he was ashamed. Now that the matter has come to an end, and the war has also appeared, Zhang Puzhu can't get out, Chang Xiu should always come to visit, right? Alas, the loss of Shang Cheng also treats Chang Xiu as a good friend; See what others do to him!

Shang Cheng pointed to a blue-enveloped envelope on the stone table and said, "He's sick, and I'm tired and sick." He is still in Xuzhou now, so he only asked Lord Yang Heng to bring me a letter. He looked at the letter with a wry smile on his face.

"What's wrong?" Gu Shi asked a little sensitively, "Is Chang Wenshi very sick?" ”

Shang Cheng squeezed out a smile, looked at Chang Xiu's letter and did not speak.

Gu Shi couldn't get an answer here, so he turned his gaze to Yang Heng.

Yang Heng didn't dare to offend Poyang Hou no matter what. At the same time, he felt that what Chang Xiu told him was not a big deal, at most, it was the same as glass, which required some time and money from the Ministry of Works. But time is nothing, and money and food are nothing, with these glassware, no matter how much money and food the Ministry of Industry has the confidence to smash it! He secretly glanced at Shang Cheng and saw that Shang Cheng had no intention of stopping him from speaking, so he explained to Gu Shi: "When Ying Bo proposed to the Ministry of Industry to burn glass, in addition to glass, there was also a thing called 'astronomical telescope'. This is also the original intention of Yingbo's initiative to fire glass. But to build an astronomical telescope, you need to have glass. Now that the glass has been made, the matter of astronomical telescopes cannot be delayed. In addition to thanking Ying Bo in person, I also wanted to ask Ying Bo about the various matters that need to be paid attention to when making the so-called 'astronomical telescope'. ”

Gu Shi turned his head to Shang Cheng again. He was relatively clear about the ins and outs of the glass matter, because Zhenqian was not optimistic about this thing, so the military department resolutely refused to spend this unjust money at that time; But he didn't hear anything about the "astronomical telescope" at all. Astronomical telescopes, what kind of thing is this? Is it a type of bronze mirror? Suddenly, he had an idea in his heart: since you can smash the glass by throwing money, can you also smash the astronomical telescope by throwing money? Since the Ministry of Industry can throw money at glass, then he can also find someone to throw money at the astronomical telescope together!

Shang Cheng spread his hands and said helplessly: "I won't do it." All I know is that to make a telescope, you have to have a concave mirror and a convex mirror. He dipped some tea in the soup, drew a convex lens and a concave lens on the stone table, and then added two straight lines, put the two lenses together, and said, "You can find a jewel-making craftsman to make these two things, and they should know how to polish them." But when these two things are placed in a hollow column, there are specific requirements for the distance between them and the front and back. I don't know what this distance is, and how to determine it. He said to Yang Heng, "I think, maybe Lord Tian Xiutian can remember some." It seems that this principle is recorded in the book. He tilted his head and tried to remember for a long time before he said with uncertainty, "This principle is called 'small hole imaging', and it seems to be this name." He drew a basic schematic diagram of the image of a small hole on the stone table.

Yang Heng stared at the scribbled schematic diagram for a long time, and suddenly said, "Is it the narrative in the Book of Ink: 'Jing." The man of light is as bright as he shines, and the man who is below is also high; The one who is higher also goes down. The foot shades the light, and the ancient scenery is on the top; The first cover is glazed, so the scenery is below. There is an end in the near and far, and Yu Guang, so the scenery library is also '? ”

Shang Cheng listened to him recite the ancient texts of the pre-Qin Dynasty for a long time, and immediately felt dizzy, and hurriedly said, "It's almost." I can't remember. You go back to Tian Daren to discuss whether this article is talking about 'small hole imaging'. Then, you slowly try to adjust the distance between the convex and concave mirrors. You can always make an astronomical telescope! ”