After the turmoil of the prince's two sons becoming kings, everything is back on track.

Two agricultural officials in charge of researching hybrid rice came to report to Li Chengqian on the latest situation.

Li Chengqian attaches great importance to the results of hybrid rice, and the results of this experiment will be related to the future.

In the future, there will be various natural disasters in the Tang Dynasty, and the grain yield will also be reduced, and this hybrid rice is very important.

According to the new agricultural report, the hybrid rice research has been very successful, and the yield has been increased by nearly three times directly from the original yield.

After Li Chengqian got this result, he immediately wrote a detailed report and submitted it to Li Er, so that Li Er could implement it throughout the country.

Li Er had heard about hybrid rice for a long time, but he didn't take it too seriously, and now after reading the report submitted by Li Chengqian, he was surprised!

The grain yield per mu can be increased by nearly three times on the original output, what this represents, Li Er naturally knows very well in his heart.

Immediately, Li Er summoned the prime ministers such as Changsun Wuji and the officials of the three provinces to discuss the promotion matters.

Rapporteur Li Chengqian and Jin King Li Zhi also attended the meeting, and Li Zhi became more and more active in the political arena.

"You've all seen the prince's recital! The yield of this hybrid rice is three times that of the original, and the prince asks me to promote the cultivation throughout the country, so that the country's grain and grass will increase a lot. Flash dance," Li Er said.

Hybrid rice must be promoted and planted, and calling them this time is just a formality, after all, this kind of promotion edict needs to be jointly signed by officials from the three provinces.

"Your Majesty! This is a move to enrich the country and benefit the people, and the ministers naturally approve of it. The eldest grandson Wuji took the lead.

This is not only good for the country, but also good for them, these people who do not have good land at home, and no one will dislike having too much food in their own family.

"Then sign your names on the edict!" Li Er said that he ordered Wang Yuan to take out the edict that had been prepared long ago and let the officials of the three provinces sign it, and then it could be announced to the world.

The officials of the three provinces stepped forward to write their names in turn, and the speed of the efficiency was staggering.

After the edict was promulgated, Li Er praised Li Chengqian even more, and told Li Zhi to let him learn from Li Chengqian.

"Father! The sons still need their father's permission!" Li Chengqian said.

"Oh! Cheng Qian, do you have anything to ask me for! Even if you say it, as long as it is beneficial to my Datang, I will not allow it! Li Er said with a smile.

"Erchen wants to set up a courtyard in the East Palace, called the Academy of Sciences." Li Chengqian said.

In the future, if Datang wants to dominate the world and colonize overseas, it must research and develop new technology.

"Academy of Sciences? What is the role of your academy? Let's take it into detail. 35xs" Li Er said, he was curious about what the prince was trying to mess with?

Li Chengqian didn't know where to start for a while, although he had already made gunpowder and made fireworks in advance.

But these can only be used for entertainment, and what he has to do now is to develop explosives on the basis of gunpowder.

Not only that, but he also had to develop muskets, advance the entire technology by hundreds of years, and create more defensive and lighter cotton armor.

There are still many technologies to be studied, and any of them will shock the whole world, and when the time comes, who else will be Datang's opponent.

These are just ideas, and to be realized, they are not that simple.

Looking at Li Chengqian, who was deep in thought, Li Er didn't urge, he was waiting for the prince to be able to bring him unexpected surprises again.

"Erchen wants to research other new varieties on the basis of gunpowder, and this academy will naturally not only study these, but also study activities that are beneficial to the country and people's livelihood!" Li Chengqian explained simply, he was afraid that Li Er would not understand, and it would be too troublesome to explain.

"Big brother! What is gunpowder? Li Zhi asked, don't say that Li Zhi didn't understand what gunpowder was, and even Li Er didn't know.

Although they set off fireworks to celebrate every year, they didn't know that there was gunpowder in the fireworks, and they didn't need to know about it.

As long as they can release brilliant fireworks, they can make him pleasing to the eye and happy to watch, as for what the fireworks are made of, they don't care at all.

"Gunpowder is an important ingredient in the manufacture of fireworks, and without gunpowder you can't release brilliant fireworks." Li Chengqian explained briefly.

Li Zhi was stunned!

Li Er was a little unhappy in his heart! Fireworks: What is that? It's just a plaything, and the prince actually wants to study this, is it because he wants to study some new plaything?

This is something that Li Er absolutely does not allow, this is simply a plaything, but Li Er knows that Li Chengqian is not a fool.

"What are you going to study with this gunpowder?" Li Er asked.

"Make explosives! A powerful explosive that can blow up a room if it's large enough. Li Chengqian explained to Li Er in a gesture, trying to make Li Er understand as much as possible.

Li Er and Li Zhi were very surprised when they heard this! If it is really as Li Chengqian said, this explosive is too powerful.

If Datang can have such a sharp weapon of the country, it will definitely be able to crush anyone or even any force at will in the future.

"Dalang! How sure are you that you will be able to develop such a powerful weapon? Li Er asked, his tone a little hurried.

"This ......" he looked down and pondered, to be honest, he had never made explosives, and he was not very sure that he would be able to research them.

"Erchen didn't dare to promise his father! You can only do your best! Li Chengqian said, a little lacking in confidence, after all, he had also touched explosives.

It's not easy to come up with gunpowder!

Li Er was silent for a moment, Li Chengqian's attitude showed that he was not very sure, and after a while, he spoke: "You can do this matter, and I will fully support you." ”

No matter what, as long as he can research such a sharp weapon of the country, Li Er will give full support to Li Chengqian to engage in scientific research.

Even if it is less than one in 10,000, as long as there is a slight opportunity, Li Er will not give up, and will not hesitate to support Li Chengqian's actions.

This kind of weapon to strengthen the national strength of the Tang Dynasty, Li Er will naturally not let it go.

"Father, rest assured! Erchen already has some ideas, as long as he follows this idea and experiments hundreds or thousands of times, he should be able to research explosives, and not only that, gunpowder still has a lot of room for research. Li Chengqian said.

As long as Li Er can support him, he is confident that he will lead the researchers to research explosives and make muskets.

"Hmmm! I just don't know if I'll ever get a chance to see the explosives you mentioned come out. Li Er said with emotion.

"My father will be able to live a long life, not to mention seeing explosives come out, Datang still needs my father to witness the prosperity." Li Chengqian said.

Li Er smiled and said nothing, he knew what his situation was, and he was afraid that he would not have a few years to live.