After the two sisters and brothers rested in Luoyang for two days, they set off again to prepare for Chang'an, Li Xiu did not go with them, because the bank in Luoyang still needed some time to deal with, so he did not stay, and found a time to personally send the two sisters and brothers away.

Li Xiu once asked Misia about the alliance between Persia and Rome, but unfortunately, when Misia and they left Persia, Bahra had just arrived in Persia, and the alliance was also being discussed within Persia, but according to Misia's estimates, Kavad should agree to this matter, and then it depends on the attitude of Rome, but with the hatred of the Romans towards Persia, it is not easy to get them to form an alliance with Persia.

Hearing the above situation, Li Xiu also secretly estimated in his heart that it had been a year since Misia and their departure from Persia, and it was estimated that now Bahra had sent an envoy to Rome, but I don't know if he would be able to persuade Rome to let Heraclius agree to an alliance with Persia?

According to Li Xiu's assumption, the ideal is naturally for Rome to form an alliance with Persia, and then jointly deal with the rising power of Dashi, it is best to suppress the momentum of the rise of Dashi, and Persia can also keep the foundation from being destroyed, so that the three kingdoms will stand together and fight with each other, and Dashi will naturally not covet Central Asia as it did in history, which will lay a good foundation for the Tang Dynasty to enter Central Asia in the future.

The bank here in Luoyang is also built in the most prosperous commercial square, but compared with Chang'an, Luoyang has four commercial squares, the most prosperous of which is Dongfang, so the bank is also built here, and the officials needed in the bank have already been in place, in fact, the bank has begun to operate, but there is still a problem that has not been solved, that is, the exchange of information between the banks of Luoyang and Chang'an.

A bank is not just a façade that can be called a bank, a real bank is a rigorous and careful system, in this system, information, money, goods can be exchanged smoothly, and the banks in each city are just the necessary nodes in this system, the most important thing is to connect these nodes.

Datang officials also have their own logistics system, such as the post station is one of the representatives, the post station is attached to the official road all over the country, when there is any information that needs to be exchanged, it is also transmitted through the post station, in addition, if the government needs to transport some goods, such as grain, metal and the like, although it is mainly to send people to escort, but the road is still inseparable from the post station.

In addition, in addition to the post station, the Fei Nu Division is also a very good information exchange system, what major things happen in various places, generally the Fei Nu Division with the help of flying pigeons or fast horses to transmit information, can make the information quickly transmitted, but the Fei Nu Division is mainly to transmit information, but the transportation of items is rarely involved.

The banking system not only needs the exchange of information, but also the exchange of money and goods, especially now the coins are mainly copper coins, these heavy copper coins are also a big problem when transporting, and the bank also has a pledge warehouse, which sometimes needs to be transported.

According to the above characteristics, Li Xiu now has two choices, the first is to rely on the original logistics system of the post station, and establish the banking system, after all, the post station is ready-made, if you rely on the post station, you can save a lot of effort; The other is to build a new logistics system completely, which of course will definitely cost a lot of manpower and material resources.

After careful consideration, Li Xiu finally preferred to rely on the original post station, because the bank was already short of manpower, and it was difficult to spare manpower to build a new logistics system, and there was no time, and with the help of the post station, a lot of manpower and material resources could be saved, and it could be used at any time.

Of course, there are also a lot of disadvantages with the help of the post station, such as the biggest disadvantage is that the crowd of people coming and going in the post station is complex, officials from all over the country, escorting the material team, and even some businessmen, can enter and exit the post station, and the bank needs to escort some valuables, or even directly copper coins, these need to be closely protected, in the post station such a place where there is a lot of mouth, it will increase a lot of risks.

However, the problem of security is not impossible to solve, such as increasing the number of guards, and you can also build a special sturdy carriage, which is specially used to escort the bank's items, just like the escort car of later generations.

After making a decision, Li Xiu also immediately began to build the logistics of the bank, now only Chang'an and Luoyang have banks, so it is easy to solve, after all, the official road from Chang'an to Luoyang is very flat, and the post stations on the road are also strictly managed, so there is no need to worry about security, the only question is where to find the escort from?

For the escort candidates, Li Xiu's first thought was the army, after all, the bank is an official institution, and it is natural to use the army to escort materials, but he soon thought that the army in this era of the Tang Dynasty is mainly government soldiers, that is, soldiers in peacetime for the people, although the government soldiers ensure the source of soldiers, but it is inevitable that the conduct of the soldiers is different, what kind of cows, ghosts, snakes and gods may be mixed in the army, let these people escort the real money of the bank, Li Xiu is really a little worried.

Of course, the army of the Tang Dynasty also has some recruitment, such as the forbidden army is recruitment, these people do not produce, father and son are soldiers, the status is relatively high, and there is no problem in loyalty, but the number is not much, and they have always been the elite of the Tang Dynasty, and they are generally only stationed around Chang'an, except for the emperor, no one can order them.

Li Xiu was in Luoyang, and if he wanted to use the forbidden army, he had to get Li Shimin's consent, which meant that he had to return to Chang'an. Of course, there is another way, that is, instead of using the army, the bank will come forward to recruit guards, but as soon as this idea appeared in Li Xiu's mind, he immediately abandoned it.

Because this is equivalent to letting the bank control an armed force, and in the era of Datang, this is definitely a royal taboo, even if Li Shimin trusts him, and the bank with huge financial resources has armed forces, I am afraid that it will become an unstable factor within Datang in the future, which is also what Li Xiu absolutely does not want to see.

After thinking about it, in the end, Li Xiu could only go back to Chang'an, fortunately, the affairs of Luoyang were almost dealt with, and Xu Jingzong was also here, so he was ready to deal with the things in his hand in a few days before leaving, but at this moment, there was a news from Chang'an that he had to throw down the affairs in his hand, and then rushed to Chang'an.