The reason why Zhang Nan was sweating profusely was because he finally knew what the system meant, it turned out that there was really another traverser in this space, and he was doing the same thing as him.

According to the intelligence, the country's technology tree is not weaker than Datang at all, and it is a little stronger than Datang, after all, when the ship is chasing, Datang's fleet does not bargain.

Although Zhang Nan still does not know where this naval battle took place, according to the description of the intelligence, Zhang Nan feels that it is very likely to be the legendary Byzantine Empire.

The Tang Dynasty experienced two heydays during the reign of Tang Taizong and Tang Xuanzong, known as the "rule of Zhenguan" and "the prosperous era of the Kaiyuan Dynasty", with a vast territory, stable frontiers, and clear politics, Chang'an gradually rose to become the world's largest and most prosperous super city during this period, and Byzantium at the same time was far from reaching.

But it is quite possible that because of this traverser, the prosperity of Byzantium was brought forward.

As an important hub between East and West, the mighty Byzantine Empire has always claimed to be the true Roman Empire. Its heyday began with the founding of Constantinople by Constantine I and culminated in the reign of Justinian I, when the Byzantine Empire, assisted by the illustrious Belisarius, gradually revealed the glory of the Roman Empire.

The strength of the Byzantine Empire lies in its tenacity from beginning to end, since its early days it has been surrounded by enemies on all sides, from the Lombards, to the Persians, and later to the Arabs, the history of the Byzantine Empire has always been spent in blood and fire.

It can be said that the combat effectiveness of this country should not be underestimated, ignoring the reason for Zhang Nan's traverser, if you really let the Byzantine Empire in the prosperous period of the Tang Dynasty in history and the most prosperous period in one place, it is really difficult to say who wins and who loses.

Zhang Nan believes that the reason why this country did not extend its tentacles to the Tang Dynasty is likely to be that the Arab Empire sandwiched between the two empires is at work, after all, the real historical order is that when the Tang Dynasty prospered, it happened to be the vacuum period of the two prosperity of the Byzantine Empire.

The Arab Empire next door is in a strong period, but the problem is, if Byzantium really has a time-traveler from another time and space like Zhang Nan, there is no reason why it can't win the Arab Empire and not expand.

Even Zhang Nan, a military blind man who does not understand military affairs at all, knows the truth that others are not allowed to snore on the side of the couch, and Zhang Nan does not believe that this country caught between war and fire will not know.

From this point of view, it is very likely that the Arab Empire also has a traverser, perhaps because of the late crossing, he is still immersed in domestic development and has no strength to expand externally, because the Byzantium next to him, who is constantly trying to expand, has already annoyed him.

So he didn't have time to take care of Datang for a while.

Thinking of this, Zhang Nan couldn't help but shudder, if this was really the case, it would be really terrifying.

"Your Majesty, judging from this secret report, the national strength of this country is not weaker than ours." After reading the secret report, the eldest grandson Wuji also frowned and said.

"That's right, our steamships have been studied by our Ministry of Heavenly Engineering for a long time, and their ships have been able to catch up with our ships, and they have also engaged in artillery battles, which is enough to prove that the military strength of this country is not weaker than ours." At this time, Cheng Yanjin also put away the look of giggling on weekdays.

"Your Majesty, if this country is not eliminated and allowed to develop, it will definitely be a big trouble for our Datang henchmen." Li Jing also arched his hand and said.

"Why don't I know? It's just that this country is too far away from our Datang, even if we want to fight him, but we don't even know the most basic things, what is their military strength? How is their technology evolving? What is their attitude towards our Datang? We don't know how we fight. Li Er was also very distressed.

Before this secret message came, Comrade Li Er was still dreaming of conquering the whole world before he abdicated, but now it is good, let alone conquering the whole world, whether he can defeat this country that suddenly appeared is unknown.

"That's right, it's too far away, and our spies won't be able to spy on it." Qin Qiong also frowned.

Although Datang was in a rest period after beating Goguryeo, everyone present knew that Datang's footsteps would definitely not stop here, but now that such an obstacle suddenly appeared, everyone also felt a big head.

The unknown enemy is the most terrifying.

"Qingquan, what do you want? You're well-informed, let's talk about it. Li Er saw that Zhang Nan, who was usually active, stopped talking, and then asked.

After Zhang Nan heard this, a wry smile crossed his face, originally he thought that he had more time, after all, he had at least fifty or sixty years to live, as long as he was there, Datang was like a car that stepped on the accelerator to the end, and it would keep running forward.

But now Zhang Nan suddenly felt that his time was pressing, if he was a few steps late, it would not only be a question of whether he could become an empire on which the sun never set, but whether he would become a slave of the country.

Others don't know, Zhang Nan is clear, although the war of thermal weapons, although in the final analysis, is a war between people, but if one of the parties has scientific and technological suppression, this battle will not have to be fought.

It's like one person holding Hanyang-made, and one person holding semi-automatic, and the two are not on the same order of magnitude at all, and the so-called war is nothing but slaughter.

"Your Majesty, the minister has a sentence that I don't know whether to say or not." Zhang Nan smiled bitterly and arched his hand.

Seeing Zhang Nan so serious, Li Er also raised his hand and said, "You say, it's okay, no one else will know about the conversation in this room." ”

Zhang Nan nodded after hearing this, then looked around, took a deep breath and said: "To tell the truth, if this country really has such technology, then the minister can only say that our Datang and him go to war, we can't get half of the cheap, really can't get the slightest cheap, if the country's technology is better than ours, then ......." Zhang Nan said here, that is, he stopped talking.

Because Zhang Nan's meaning is already obvious.

"Huh, could it be that in this country, there are also people who you pass through the door?" Li Er exhaled and said.

"Not the one we walked through, but from the same place as us." Zhang Nan said softly.

"Qingquan, what do you mean by that? Could it be that I have such technology, but I still can't beat it? Even if we play against them, we won't necessarily lose. At this time, Li Er was like an enraged lion.

He never allowed himself to fail.