Liangyi Palace.

Li Shimin just talked about the rebellion of the Xue Department in Lingzhou with a group of military generals, and several prime ministers in the political hall were also there.

In fact, there is nothing to talk about, with the military strength of the Tang Dynasty, this kind of small-scale rebellion, pacification is just a matter of capture.

At this time, the eunuch sent by Li Tai reported that he could not eat ice.

"Fart! Lao Tzu eats every day, and I don't see any illness! That's a kid who has a lot to do. Wei Chigong shouted, not impressed, but disgusted with the hypocrisy of Fang Yi's love.

"What has Fang Yiai been doing lately?" Saying this, Li Shimin thought of Fang Yiai, and asked casually, Fang Yiai has not caused trouble in the past few days, as if he is still a little unaccustomed.

Li Junxian knew that Li Shimin attached great importance to Fang Yiai's love and paid attention to his news.

"Your Majesty, Director Fang opened a bookstore a few days ago......," Li Junxian replied with a glance.

After his reminder, Li Shimin had a little impression, and then laughed, "Oh, 'Dali Bookstore', right?" There are many people in the palace who scold him, haha...... This kid really doesn't stop! ”

"I heard that those sour literati are all scolding this kid for being a philistine, haha......" Speaking of this, Cheng Yanjin couldn't help laughing.

The old rival Wang Qi got up and said: "Cheng Zhijie, what do you mean by this, what do you mean by a sour literati?" Learning is an elegant thing, how can it be associated with copper-smelling things. ”

Li Shimin ignored the two and asked, "That book is really written by the daughter of the secretary Cheng?" ”

"I don't know?"

Li Junxian replied rigidly, and Li Shimin asked casually, without holding Li Junxian, and continued: "A story is nothing, but I don't know what the identities of the two talented people are?" ”

"Haven't found out yet."

Seeing Li Junxian's confessional posture, Li Shimin waved his hand and said, "Okay, I don't blame you." He didn't seem to finish his words just now, and Li Shimin then asked: "What else is there to do with Fang Yiai?" ”

"The craftsmen under the director of the house made a kind of thing called lime, the cement is in the form of powder, and the water is no different from thin mud, but when it is dry, it is like a rock. A wall more than a foot wide was built, and Captain Cheng smashed it four times, but he never destroyed it. ”

With Li Junxian's description, the hall gradually quieted down, and his eyes focused on Li Junxian, who was not a mediocre person present, and roughly understood the wonderful use of this thing.

"And such magical things!" Lao Cheng asked in surprise.

Li Shimin was also full of curiosity about this cement, and got up and asked everyone: "Zhong Aiqing, would you like to see it with me?" ”

"The ministers are willing to go together."

……

Fangjiazhuang.

Li Tai's men moved quickly, and almost at the same time as Cheng Chumo and Changsun rushed back, they bought a batch of saltpeter back.

Linking the cause and effect, Changsun Chong guessed his thoughts and felt a little incredible, "Fang Er, are you planning to use this thing to make ice?" ”

Li Tai felt incomprehensible and asked, "Master, this is medicine, how do you make ice?" ”

"Fang Er, you mean, you plan to make ice in the summer? Just use this thing? …… Phew! Bitter. Cheng Chumo asked curiously, picked up a piece and tasted it, and quickly spit it out.

"You're not afraid to poison you."

Fang Yiai was inspecting the saltpeter, and when he saw Cheng Chumo's behavior, he kicked him angrily, and after confirming that the thing was correct, he said, "Look at it." ”

"Qiao'er, bring two different copper basins." Then, he kicked Cheng Chumo again and said, "Go and bring a pot of cold boiling." ”

The things are in place, Fang Yiai squatted down and fiddled with it, first added half of the water to the large copper basin, put the small copper basin in it, and added water to ensure that he could float on the surface of the water, otherwise the saltpeter would be integrated into it, and the ice would be too bitter to eat.

He then added saltpeter to a large copper basin.

With the saltpeter slowly added, the people surrounding the copper basin next to him slowly felt the temperature drop, staring at the water in the copper basin one by one, holding their breath.

When all the saltpeter was poured in, the water in the copper basin had already begun to freeze.

Whew-

Several people were shocked, as if they were watching a miracle, and breathed a sigh of relief, Qiao'er's small mouth was O-shaped, and it took a long time to come back to her senses, pointing to the copper basin and saying, "Young master, this is immortal art!" ”

Cheng Chumo thought deeply about it, listened to Qiao'er's words, and nodded vigorously, looking stupid.

Whether it is ancient people or some modern people, they always like to attribute the things that cannot be explained to the gods and ghosts.

The same is true of Li Tai, who has been influenced by science for so long.

This is more than the other two stones, the impact on people is much greater, last time it was just a shock to common sense, this time it is like magic.

Fang Yiai was amused, pinched Qiao'er Xiaoqiong's nose, and said: "What kind of immortal art is this, it's just a natural phenomenon, and there is nothing magical." ”

"Master, is this science?"

"Not bad! You'll learn this in the future. Fang Yiai replied with a smile, he naturally would not refuse to promote a wave of science, "There is science everywhere in life." ”

"Disciples must study hard."

"This substance can be reused, and after the ice is taken out, the saltpeter in the water is dried, and it can be used to make ice again." Fang Yiai added.

"Can the disciple try it?"

"Yes, be careful, don't add saltpeter to the small basin." Fang Yiai reminded him, turned around and ordered his subordinates, "You boil some mung bean soup, send it to the construction site after it is chilled, and give it to the big guy to cool down." ”

……

Outside the Zhuangzi.

Li Shimin and the others jumped off the horse, looked at the mountain not far away, and sighed: "This speed is fast enough, and it really changes every time you come." ”

At this time, Li Junxian stepped forward and pointed to the road on the hillside: "Your Majesty, the road on the mountain should be built with cement." ”

Yes, construction of the concrete road has already begun.

Divide the road into two halves, and start building the road while pedestrians, and when it is rainy in summer, half of the cement road should be repaired without affecting the materials up.

"What? He used such treasures to build roads! Loser......" Wang Qi heard this, and immediately reprimanded angrily.

"Ugh!"

Li Junxian was speechless for a while, and said apologetically: "Don't be angry in the king's servants, it's all because the general didn't make it clear." Although it is very useful, it is very simple to obtain, and it is obtained by calcining it with mountain stones. ”

"Ahem, ahem, ahem......"

Hearing this, Wang Jue almost vomited blood, coughed violently, and his face was red and his neck was thick.

"Hahaha......"

The old opponent was deflated, Cheng Biting Jin did not restrain his temperament, laughed loudly, and said in a downhill: "Uncle Wang, there are mountains full of stones, why bother with those stones, or I will send someone to give you a car." ”

In fact, he almost scolded, and he was a little slower than Wang Qi, and laughed at Wang Qi at this time, as if the person was not him.

Li Shimin was deaf to the quarrel between the two, and when he learned that this poem would be so cheap, he stared straight at the hillside and paid more and more attention to it.