Sheena met with the Caliph and brought a large number of Datang industrial supplies, dazzling and varied, including a batch of ceramic things, which aroused everyone's interest.

The head of the Caliph's court asked Tang Fei, "Lord Tang Envoy, may I ask, what are these things for?" ”

Tang Fei gestured with his eyes, and an official under him told

The caliphate's court chief, called the toilet, was used in the latrine. Then he explained the principle of use.

The caliph's court governor was very interested, and as a result, he bought all the ceramic sanitary ware brought by the Tang caravan and used it to renovate the palace's sanitary system.

The industrial products of the Tang Dynasty were loved by the nobles of the Arab Empire, and the goods brought by the entire caravan were sold out in Damascus.

Overjoyed, the officials of the Department of Foreign Trade immediately set up an office in Damascus and signed a large number of commercial cooperation contracts with the nobles of Damascus.

As they learned about the Arab Empire, Tang Fei and Xue Rengui became more and more worried.

The Arab Empire is a **** country, their origin is a small kingdom on the Arabian Peninsula, since Muhammad established Islam, in just a few decades, it has expanded into a huge, enough and beautiful country with the Tang Dynasty!

After observation, Tang Fei and Xue Rengui summed up the advantages of the Arab Empire.

First of all, they are a religious country, and Islam is extremely influential and has many adherents. Moreover, these believers are deeply convinced of the teachings of Islam and worship them fervently, even to the point of dedicating themselves to it.

The Arab state is made up of countless tribes, which are an army in themselves, all of them are valiant warriors, inspired by the dedication to religion, these warriors are not afraid of death, they are unusually united, and they have the spirit of initiative.

This fighting spirit is even better than that of the Tang Dynasty soldiers.

Because of the power of Islam, they were able to assimilate the people of the occupied areas, and they were very powerful. Every time they occupied a region or country, they immediately promoted Islam, and within a short time, the people of the region were influenced by Islam and became a member of the Arab Empire. In this way, their strength continues to expand rapidly.

Xue Rengui had a detailed understanding of the situation of the Arab armies, and he found that the main reason why the Arab armies were strong was not because of the army's well-trained and well-equipped troops.

Their main reliance is a fighting spirit, united, brave, and fearless of death, and they have an overwhelming momentum on the battlefield.

The caliph was a very wise monarch who commanded his armies in battle, not only relying on the power of religion to inspire them, but also the system of military merit that appealed to Arab warriors.

The military merit system of the Arab armies stipulates that 4/5 of the booty obtained by all the armies participating in the war belongs to the soldiers at the front, and only 1/5 must be transported back to the rear and handed over to the state. Such a powerful temptation naturally stimulated the soldiers who participated in the war.

In the process of conquest, the Arab Empire did not blindly rely on military conquest, but in order to divide and disintegrate the enemy forces, they prescribed three ways of treatment.

First, if the other party can take the initiative to change their court, embrace Islam, and then join the Arab Empire, then they can enjoy the treatment of Islam.

Second, if they surrender after signing an agreement, they are allowed to retain their faith and way of life, but they are subject to paying a certain tax. And this tax burden is much lower than the taxes that the locals used to pay to their own countries.

Third, in the first two ways, if the other party does not accept it, they resort to military conquest, and in the process of conquest, the means are extremely cruel.

In this case, many countries have accepted the first two approaches.

Therefore, they quickly occupied a large number of countries such as Greece, Iraq, Libya, Iran, Afghanistan, Pakistan, etc., and then launched an attack on the ancient Persian Empire and the Byzantine Empire, which caused the Byzantine Empire to retreat one after another, and in history, it quickly eliminated the Persian Empire.

In this case, Tang Fei and Xue Rengui believed that if the Tang Dynasty started a war with the Arab Empire, there was no certainty of victory.

At this time, they admired His Majesty the Emperor's far-sighted plan to marry Princess Sheena and establish diplomatic relations with the Arab Empire!

Just when Tang Fei, Xue Rengui and others were gaining an in-depth understanding of the Arab Empire, the caliph and others were also having an in-depth understanding of the Tang Dynasty.

Sheena told the caliph and others in detail what she knew about the situation in the Tang Dynasty.

The caliph and others found that the Arab Empire at this time, compared with the Tang Empire, was far inferior in terms of territory, population, science and technology, culture, material wealth, and military strength (the territory of the Arab Empire at this time was about 2/3 of the Tang Dynasty)

There is a famous general in the Arab Empire, named Khalid, whose military achievements can be compared with Li Jing, the military god of the Tang Dynasty.

He specially observed the Tang cavalry that escorted Xina and communicated with Xue Rengui. He felt that the same number of Arab troops could not defeat the same number of Tang troops.

The wise caliph and the equally wise Li Su made the same decision - that is, the two countries would not clash, form friendly allies, and divide their respective spheres of influence.

In the end, according to Tang Fei's proposal, the Persian Empire was temporarily retained between the two countries as a buffer zone. The entire continent of Southeast Asia and South Asia is under the influence of the Tang Dynasty.

In the Arabian Peninsula, the region west of Central Asia, and the European region, the Arab Empire can develop at will, and the Tang Empire must not interfere.

The caliphs were also very pleased with this proposal, because their main target now was the Byzantine Empire. Through his alliance with the Tang Dynasty, he was able to relieve the danger from the southeast, and he could go all out to develop into Europe, North Africa, and the Near East.

A treaty of friendship was formally signed between the Tang Empire and the Arab Empire, and a treaty of friendship was also signed with the Persian Empire to jointly establish the economic development region of the three countries.

Although the Persian Empire was reluctant, they were sandwiched between the Tang Empire and the Arab Empire, and they were powerless to fight, so they had to obediently agree.

Tai Chi Palace, Li Su's study.

Wei Zheng said: "Your Majesty, Princess Sheina, Tang Fei and Xue Rengui have gained a lot from this mission to the Arab Empire, and from now on, there is no need to involve energy on the western border of Datang, and other countries around Datang do not pose a threat to Datang, so we can do our best to do a good job in domestic construction." ”

Li Jing said with some concern: "After this agreement was signed, it also blocked the channel for the development of the Tang Dynasty to the west, once the Arab Empire grew to the point where its strength surpassed that of the Tang Dynasty, wouldn't that be the biggest threat to the Tang Dynasty?" ”