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Hearing that Liu Mu asked the county orders to also participate in the black disaster, Li Shimin couldn't listen to it anymore, and was about to open his mouth to refute.

Liu Mu opened his mouth and said: "These county orders carry this black pot for Datang, and then lend it to me, and I will take them to Wadao." Keeping them on Wajima is a fifth-order treatment. ”

After Liu Mu finished speaking, Li Shimin's eyes narrowed.

As long as he is not involved in the new emperor's accession to the throne, there will be natural disasters, and Liu Mu will have a big compensation to the county commanders who bear the blame, this can be done.

But Li Shimin couldn't open his mouth to say that he would do the same.

Liu Mu said for him that it was a hundred times better than him to speak, and Li Shimin didn't want to have a bad reputation. And Liu Mu doesn't care, there is not even a thing to carry a reputation.

Liu Mu said while waiting for Liu Zhenghui to think: "Sage, the forbidden army will help me send a document to the chief shipper." ”

"What kind of paperwork?" Li Shimin asked.

"Sage, I always collect locusts, and the dried locusts exchange one stone for two stones of rice. Grinding locusts into powder is very useful, curing children's whooping cough, and it is also of great benefit to the queen's qi deficiency and shortness of breath. Of course, the queen's medicine also needs to be compatible with the rest of the medicinal materials. Its most important value is military medicine. ”

"Military medicine?" Li Shimin was taken aback.

"With wine and clothes, cure the wind for seven days."

"Ahh Seriously? Li Shimin knew that after many soldiers in the Tang Dynasty were injured, it seemed that the wounds were recovering, but suddenly they died of spasms.

Liu Zhenghui also said: "The seven-day wind is a mortal disease, and it is rumored that Song Xianggong died of the seven-day wind after being injured." ”

Liu Mu remembers very well that in ancient times, there was no way to deal with tetanus, and this disease was terrible.

In the Ming Dynasty, the book of the Compendium of Materia Medica recorded that locusts were ground into powder, three grams each time, three times a day, and the wind could be cured for seven days by taking it with wine. That is, tetanus.

Li Shimin immediately wrote a copy by hand, and asked Fu Yi to go to the Medical Holy Hall in person, and the predecessors of the former Daomen who were skilled in medicine calculated and verified according to Liu Mu's statement.

At this time, Liu Mu said to Liu Zhenghui: "Liu Shangshu, I will definitely tell Shangshu Province about my reminder just now, please seriously consider my proposal." ”

"Okay, this official will consider it, and this official will go to Shangshu Province to discuss this reminder with Shangshu Province on your behalf."

"Thank you."

"For the sake of the matter, Liu Juma is not as good as me to go, so I will also talk about your official document."

Li Shimin said: "Set up a banquet, I will discuss it with you tonight." ”

"Yes, the minister will retire first."

Only a quarter of an hour later, thousands of horsemen came out of the four gates of Chang'an, and everyone kept shouting: "The general division buys the locusts of the sunshi, and one pound of locusts is exchanged for two catties of high-quality rice, and it will be exchanged at the county offices." ”

With such a speed of transmission, I believe that it will not take more than two days, and the entire Guanzhong will know that Liu Mu brought back five million stone rice, and then used the rice to exchange for sun-dried locusts in Chang'an.

But this order was changed by Gao Jian in just a few hours.

Just harvest locusts, two catties of locusts for one catty of rice, and there is no need to dry them. The sun-dried ones are still redeemed at the original price.

In the evening of the same day, the meeting that Yanagi was looking forward to did not take place, not because people did not arrive, but because the problem of locusts alone took Yanagi almost two hours to explain.

Moved from Li Shimin's study to the Taiji Hall.

There is a large blackboard on the Taiji Hall, where Liu Mu is drawing with chalk.

"What is a locust? All of you seniors are well-read poets, but I say you're wrong. ”

Yao Silian came to the blackboard and bowed to everyone: "Everyone, if the drought dries up, the fish and shrimp will turn into locusts, so there are many fish and a good year." ”

After hearing this, Liu Mu's face turned red.

Yao Silian smiled at Liu Mu: "The old man thinks that Liu Mul is allowed to speak rudely." ”

"." As soon as Liu Mu heard that he could speak foul language, he immediately scolded: "Yufeng is because the locusts have died in the water countless times, and then this thing is greatly replenished, and the fish eats the natural Yufeng." ”

The board book of willow wood is very poor, and the drawing skills are also very ordinary. However, Yanagi still has locusts that he has studied in elementary school.

"This thing is a bug, and to put it simply, it's a big cricket. This thing is very fun, grab one and put it in a small bamboo cage and feed it green onion leaves, this guy can make it spicy all night. ”

Liu Mu slapped the blackboard vigorously.

Without Liu Mu's explanation, until the end of the Song Dynasty, it was determined that locusts were formed from fish eggs, and then flew into the sea to become fish.

"Fighting crickets, have you ever played with it, this thing is interesting."

Most of the people present shook their heads, but Ma Zhou said that he had seen it, and there were indeed those who gambled on fighting crickets.

"Locust plague!"

Hearing Liu Mu mention the word locust plague, everyone fell silent.

"In fact, there are locust plagues in the four counties under my jurisdiction, and the locust plagues are very mild. I have sent 10,000 chickens to sweep away the locusts. ”

Li Shimin interrupted Liu Mu: "Let's talk about the point." ”

"The living habits of locusts like to eat dry plants and dry places. In this way, the drought makes the water level drop, the well water becomes deeper, and the water in the soil becomes less, and then the locusts like such a place, and the maximum can have 500 egg masses per foot square, and there are 50~80 eggs in each egg mass, and there will be tens of thousands of locust eggs per foot. ”

"It lives in groups, it grows a lot, it eats everything, it flies, and the locust eggs hide in the ground and may even turn into worms for years. The locust plague is because they are emptied of one place and then continue to eat in another place. ”

"There have been records in the annals, based on the Qin and Han dynasties, an average of once every nine years. However, the former Sui was once every five years, and the Wude period was only ten years, and there were eleven large and small locust plagues in the Tang Dynasty. Why? ”

"Why?" Originally, Li Yuan, who had just come to listen to the excitement, asked.

The locust plague will be recorded as the emperor's immorality, etc., Li Yuan heard that he has been the emperor for ten years, and there is still a year and a half in the period of ignoring the government, but there are eleven great locust plagues.

"Father, have you heard of locust plagues in the history of Lingnan?"

"Nope." After Li Yuan answered, he looked at the important ministers, and the important ministers said that they had not heard similar records.

Liu Mu knew that in later generations, locusts were artificially and frantically cultivated in Guangdong, and then exported in large quantities.

None of this is relevant.

"Father, saints, seniors. Where the green space coverage rate is less than 50%, locusts can survive, and where the mountains and rivers are beautiful and the plant density is high, it is impossible for locusts to survive in large numbers, and a few are not enough for birds to eat. ”

Immediately afterwards, Liu Mu shocked the Taiji Hall with three words.

I only heard Liu Mu ask: "Father, brother." You've heard of ...... Is the Yellow River clear? ”

The entire Taiji Hall went up to the Emperor Li Yuan, the Tang Emperor Li Shimin, and down to the ordinary little eunuchs, everyone was stunned on the spot as if struck by lightning.