"Yes, the emperor knows what you mean, but is this really the best? We can do this kind of thing of hurting the enemy by 1,000 and inflicting 800 losses, but we can't help but think about the worst. Zhang Nan said helplessly.

"What's the worst-case scenario?" Li Er asked puzzled.

"Slaughter." Zhang Nan said very calmly, trying not to say it with any emotional color, in order not to anger Li Er, but Li Er was still provoked.

"Impossible, I've been fighting all my life, when have the soldiers under my command been slaughtered!" Li Er said angrily.

"Your Majesty, you must know that in the face of absolute strength, everything is empty talk, just like when we fought Goguryeo in Silla, the Goguryeo people thought it was safe to stick to the city, but what? Our hot air balloons flew over them, and they couldn't do anything about it, and if we hadn't cared about the people in the city at that time, and the problem of rebuilding Silla, we could have taken the city without a single soldier, wouldn't this be a one-sided massacre? ”

"And the reason for this is not because of the suppression of the level of science and technology, the Goguryeo people would never have thought that we would attack from the sky, even if they knew, they would be helpless, right?" Zhang Nan said.

Hearing Zhang Nan's words, Li Er showed a thoughtful expression.

"In the same way, if the people of that country are better than us in technology, we will still be unilaterally slaughtered." Zhang Nan said.

"Isn't there no solution?" Cheng Yanjin scratched his head, he knew the effect of the hot air balloon and the thunder when he hit Goguryeo, if he didn't want to show off in front of Jindeman, I am afraid that Quangai Suwen would be captured alive without even seeing Comrade Li Er's face, or he would be blown up to death.

"If you want to say that this solution is not nothing, and we are using it now." Zhang Nan said.

"Oh? What is it? Li Er asked.

"Wait for work, Your Majesty, you also know that our fleet has been traveling for several months to get over there, the road on the sea is much smoother than on land, as long as the weather is good, it is much easier to walk than on land, if the same distance is put on land, then they are afraid that it will take a year or two to come, not to mention that the army is on the march, grain and grass will be a big problem, they trek through mountains and rivers to fight us, I am afraid that the supply of grain and grass will not keep up, plus we do not border their territory, Therefore, other countries on the road will not let them go easily. Zhang Nan explained.

"But the minister thinks that this matter is better to prepare early, our goal is to establish our Tang Dynasty into an empire that will not be able to do the same, I think they are similar, at least for now, our opponent is only him, so one day, the territory of our two countries will border, so this war is inevitable, so the emperor, vigorously developing science and technology is our last word." Zhang Nan said.

Speaking of this, Zhang Nan thought of the later generations, when the country that used to act as the world's policeman, it was often possible to fly a plane to China's airspace without even saying hello, and due to the limitations of science and technology and national strength, our pilots could only drive fighter planes to crash into them.

With the development of science and technology and the improvement of national strength, it seems that the hand of the world policeman cannot reach so far, and what he can do is more to make a dozen mouth guns and restrict development from the aspect of science and technology.

Therefore, the development of science and technology is the most important, as the saying goes, there is truth within the range, this sentence is not groundless.

"That's right, I think so too, it's just a matter from the Ministry of Heavenly Work, I really can't find anyone who can help them in Datang." Li Er was also very distressed.

If you want to say that in the past, the things that the Ministry of Heavenly Works did, if Li Er thought about it carefully, he could still figure out the principles, but now what the Ministry of Heavenly Works does every day, Li Er is already a little incomprehensible.

"Aren't there still ministers? Your Majesty, as long as there are ministers, our Datang's weapons will definitely not be able to pull down. Zhang Nan also patted his chest at this time and reassured. Although Zhang Nan didn't want to do this, but when it was really a last resort, Zhang Nan couldn't do what he was fueling.

What Zhang Nan wanted to do most in the past was to give Datang a good order of scientific and technological development, if it was really time to point the knife to the tip of his nose, then he didn't have to think about it so much.

After hearing Zhang Nan say this, Li Er also nodded with satisfaction, I don't know why, Li Er just felt that Zhang Nan said this sentence, which made him feel more at ease than others saying it.

"By the way, the crops and other animals that the fleet got this afternoon are coming back, so let's go with me to take a look, although I know that there is a strong opponent, but this is also a good thing, isn't it? If there is no foil from them, how can I show the strength of my Datang? Li Er said with a smile.

It can be seen that although Comrade Li Er is worried about this issue, he is not particularly worried, and of course, this is also due to the fact that he did not fully understand how big the gap between hot and cold weapons is.

But with this mentality, Zhang Nan felt that except for Li Er, there were few people who could do it. These are the words of an emperor who has conquered the world.

"The ministers obey." Everyone hurriedly said.

At noon, everyone was warmly invited by Li Er, and everyone also had lunch in the palace, and in the afternoon, Zhang Nan finally saw the results of this trip.

In addition to the crops that were highlighted by Zhang Nan in the encyclopedia, Zhang Nan also found a few brightly colored flowers in many plants, but because of the unsuitable water and soil, it looked a little wilted, but Zhang Nan could still see the beautiful appearance of these flowers. Of course, these strains just made Zhang Nan simply look good, and they didn't attract too much attention from Zhang Nan.

Li Er stood in front of several large vat of crop seeds, staring at the crops in the vat seriously, looking as pious as he was.

"Qingquan, is this the high-yielding crop you said?" Li Er asked in a trembling voice, obviously, although he lost two steamships on this trip, as long as he could transport this thing back to Datang safely, Li Er felt that it was worth it.

This is a matter of merit, it is impossible for Li Er not to be excited, with these things, it means that there will never be any hunger in the Tang Dynasty in the future, what Li Er thinks about day and night is this matter, a country that is not hungry, Li Er can't even imagine how powerful it will be.