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Li Chengqian had lunch at Xia Hongsheng's house, and then waited until it was dark, Xia Hongsheng changed into a subordinate costume, and the two went out together, Xia Hongsheng followed Li Chengqian to the East Palace.

"Brother Sheng, you wait here for a while, and I'll go and talk to my father about this." After Li Chengqian retreated from the others, he said to Xia Hongsheng: "The people here are all carefully selected by me, and I will definitely not say half a word about your affairs here." I told them all to go out, and they couldn't hear the conversation later. ”

Xia Hongsheng nodded. Li Chengqian left to see Li Shimin.

After Li Chengqian left, Xia Hongsheng took out the letter written by Wang Xuance to himself and read it.

What he did in Persia was quite similar to what Xia Hongsheng had done before between the Turks and Xue Yantuo. In that land, the Great Food was like the Turks, and Persia was like Xueyanta. However, the situation there was much easier to maneuver than between the Turks and Xueyanta.

After all, the gap between Xue Yantuo and the Turks is too big, and the Persian hundred-legged insect is dead but not stiff, although it is at a disadvantage in the confrontation with the Great Eclipse, and it has even reached the point where it is precarious and has to ask the Tang Dynasty for help, but with the background of Persia, as long as there is the assistance of external forces, not to mention the counterattack of the Great Eclipse, but at least the stalemate can be done.

And the Tang Dynasty still has Goguryeo to deal with at the moment, and the Western Regions have not yet been experienced to the point where the Tang Dynasty can do whatever it wants, and the stalemate between Dashi and Persia is the most beneficial situation for the Tang Dynasty.

Xia Hongsheng waited in the East Palace for a while, and after about a stick of incense, he suddenly heard the voice of "Meet Your Majesty" outside.

Knowing that it was Li Shimin coming, Xia Hongsheng got up, and as soon as he walked to the door, Li Shimin came in.

"Your Majesty!" Xia Hongsheng saluted Li Shimin and said: "Your Majesty is tired of moving to the East Palace in person, and the sin of the ministers is also!" ”

"You and I don't have to be polite." Li Shimin waved his hand and said, "It's always right to be careful." I sat down in the past and said, I really heard Cheng Qian say that Wang Xuance sent back a secret letter from Persia?! ”

A few people went over and sat down, and Xia Hongsheng took out the secret letter, and handed it to Li Shimin along with the translation.

Li Shimin took the letter, leaned in front of the lamp, and immediately looked down carefully.

"Good!" Li Shimin patted the table lightly and said in a low voice: "Well done!" ”

Xia Hongsheng and Li Chengqian glanced at each other, continued to wait, and saw Li Shimin and said, "Good way!" This method is quite similar to the original practice of the Tang Dynasty between the Turks and Xue Yantuo, and it is more suitable to be used between Persia and Dashi than between the Turks and Xue Yantuo! ”

Seeing Li Shimin's reaction, Xia Hongsheng knew that most of the suggestions put forward by Wang Xuance in the letter were to be adopted by Li Shimin, rather than being ignored.

Also, in terms of original history, the Tang Dynasty had a high reputation in Central Asia and West Asia at that time, and its political influence was relatively large. At that time, the Tang Empire and the Arab Empire were the "superpowers" in the world at that time, and even the Eastern Roman Empire was at sunset, and it had no time to take care of itself, and it was also a hostile relationship with Persia.

Therefore, the Persian prince thought that only the Tang Dynasty could save Persia.

The earliest time Persia sent tribute to the Tang Dynasty to ask for help seems to have been in the twelfth year of Zhenguan. After that, there were two more requests for help during the reign of Gaozong.

In fact, during Li Shimin's reign, he was powerless to ask for help from Persia.

Relations between Persia and China have been good since the Northern Wei Dynasty, and although there are not many political contacts, they are extremely close economically. During the Zhenguan period, the economic exchanges between the Tang Dynasty and Persia became closer with the prosperity of the Silk Road and the beginning of the rise of the Maritime Silk Road.

However, big food is different. Da Shi was keen on religious practices and repeatedly disrupted trade routes.

Moreover, the Arabs are extremely aggressive, and their ultimate goal is China. If there is no Persia, and the countries of the Western Regions have no resistance in the face of the Great Eclipse. This is tantamount to exposing the Tang Dynasty directly to the Arabs. This can be seen from later history. After the destruction of Persia, the Arabs marched all the way east, controlled Central Asia, and invaded the countries of the Western Regions. The Arabs and the Tang Dynasty met more than 20 times, and were shocked by the amazing combat effectiveness of the Tang soldiers. In the final battle of Talas, Gao Xianzhi fought against more than ten times his own Arab army, and the Arabs who had fought before were defeated one after another, and the outcome of the war would not have been known if it had not been for the rebellion of one of the tribes.

This is the most direct and fierce confrontation between the Tang Dynasty and Dashi, which should have been a "world war" before the two super empires, however, because of the Anshi Rebellion in the Central Plains, the intervention of Tubo, and the civil strife in Dashi's country, for various reasons, Datang lost control of the west of the Green Ridge, and the footsteps of the Arabs also stopped there.

Therefore, Li Shimin, who has a long-term vision, wants to help Persia in the interests of the Tang Dynasty in his heart.

However, after some consideration, he could only be powerless and powerless.

If you don't send troops, you can't help Persia defeat the army of the Great Eater.

And if it is an army, then the problem is even more.

The army of the Great Tang started from Chang'an, through the Hexi Corridor, Xinjiang, Central Asia and other places to reach Persia, this is a long supply line, when the Arab Empire was strong, if you want to completely eliminate the Arab power in West Asia, you need at least 100,000 troops, while the ethnic minorities in the Western Regions can only provide a small number of cavalry, and most of the troops need to be requisitioned in Chinese mainland.

In the Tang Dynasty at that time, there was no problem in levying 100,000 cavalry.

However, 100,000 cavalry needed a logistical supply line, and at least 300,000 people were needed to transport grain and grass, that is, three grain soldiers to supply one cavalry.

Moreover, it is not enough to form cavalry units, but also to cooperate with the infantry, because the hoplites need to be deployed to cooperate with the cavalry. In this way, the Tang Dynasty had to mobilize at least about 500,000 troops to fight a decisive battle with the Arab Empire.

And the Tang Dynasty could not be like the Mongolian cavalry in later generations to fight and rob, relying on looting to supplement supplies. And even if they wanted to supplement by robbing, many countries in the Western Regions were vassal states of the Tang Dynasty at that time, and it was not easy for the Tang Dynasty cavalry to rob them.

Therefore, 500,000 people went to Persia from the Tang Dynasty, which was very uneconomical for the Tang Dynasty. For the sake of the distant West Asia, it is very not worth spending such a large amount of national strength.

Therefore, in the original history, Li Shimin, as well as his successors, could only entertain the prince who asked for help from Persia, but put it aside.

Now, however, the situation is different! (To be continued.) )

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