Of course, Xiao Xuan did not expect that just such a large-scale purge and purge would solve the problem once and for all. Although theoretically there was an empire with a range of 3,000 miles like the Persian Empire in the classical era, there was an Arab empire from Spain to the border of the Tang Dynasty in the Middle Ages, and the first sun never set like Spain in the Renaissance era, not to mention Russia that extended its influence to the Far East. The limits of the ruling frontier are probably beyond the borders of China's previous dynasties. However, when the regime from the east encompassed the entire civilization zone of the northern hemisphere, the hidden danger of "light center of gravity" was still manifested at this time. Although the East at this time was not Britain during the Napoleonic Wars, opportunities such as the War of Independence or the American-British War did not necessarily exist in the short term. But centrifugal tendencies in vast overseas areas are always inevitable.

The only solution that Xiao Xuan could think of to solve this problem was "flowing water without rotting". There is a regular rotation of the entire upper ruling layer and even the entire garrison system. And it is not like the United States and Britain did in the North American colonies to retain or even transfer the productive forces, but in a sense as a real colony, perhaps only in this way can a large number of benefits be really obtained.

Xiao Xuan's large-scale purge, which was not too far from the Persian region, also made Abbas II and even the prime minister of Persia feel the pressure at this time. There is no doubt that, under the normal logic of power, such a major operation has just been carried out, and the expedition against Persia may have to be finally abandoned. But he didn't expect that when the spring had not completely passed and the summer had not really come, Xiao Xuan once again launched a combat operation against the Persian area. Although most of the more than 200,000 troops that had been purged in the past were unavailable, the number of reliable forces that could be put into operation was still about 50,000, which was sufficient to a large extent. The combat force of about 50,000 people, with three brigade battle groups as one group, was divided into three routes and launched operations from several other key roads when the mud of spring gradually passed, while the core main force of about five or six thousand people led by Xiao Xuan himself approached the central capital Isfahan.

Facing the pressure of strong enemies from all directions, especially the long drive of the team led by Xiao Xuan. Although not very aware of the intention of the powerful Abbasid II, the enemy of the East, to concentrate his forces on the outer lines for a decisive battle, the Council of Elders eventually adopted a more conservative and conventional approach. Because according to some inside information obtained earlier. The powerful enemy in the east had the means to detect the enemy with precious telescopes in the clouds, so that, although there were many convenient places to ambush in Persia, no one could guarantee that the Mamluks would not be as passive as the Mamluks in the field.

As a result, under the mobilization, the decent army of Kan in various places began to assemble in the area of Isfahan from all directions. Compared with the Ottoman Empire, Safavid Persia had a smaller war potential, and the influence of elite militarism was heavier, and the scale of the entire dynasty's war force was slightly smaller, but because of the less feudal nature of the rule, the decrees were to a large extent smoother, and it did not take too much time to concentrate the forces of 220,000 people, including the palace guards, in the area of Isfahan, and even about 100,000 people mobilized in the capital. In a way, it doesn't seem to be weaker than Istanbul's defenses. Of course, it was precisely because the Safavid Dynasty had not suffered a bone-wrenching loss in the previous battles that it was able to concentrate such a huge force in the area around the capital.

At this time, the other three armies that invaded Persia did not attack Isfahan in this case, but continued to carry out a large-scale purge of the target area as originally planned. It should be said that compared with the grassroots in the Ottoman territory, which had many low-level nobles, the grass-roots of the Safavid dynasty were not so consolidated. In the face of an attack by foreign forces, it is difficult to organize effective resistance in many places.

Of course, in Persia, Xiao Xuan did not adopt the same extreme policies as many places in the Ottoman territory, nor did he solve the local problems by planning to "kill people for another species", but more adopted the strategy of "people rolling and staying" like many places in Hezhong and even the old Xinjiang, although it also brought a large scale of resistance, but after all, he did not encounter the same struggles as in the Ottoman territory.

When many of the defenders in Isfahan saw that only a few thousand enemy troops had arrived, many officers and generals seemed to change their previous views: "It seems that it is completely certain that, judging from the appearance and equipment of the army, it must be the guard of the king of the east." As long as we concentrate our elite forces to eat them, we may be able to do a rare miracle for the entire nation... ”

It was only the officers and generals who had accompanied the army to participate in the confrontations around Ankara that they were more serious, because many of them had seen the terrifying firepower of these extraordinary armies.

In order to settle the controversy, the prime minister of the Safavid dynasty had to finally agree to organize an attack against a strong enemy by some war-seeking officers and generals. In the end, according to the agreement, about 50,000 troops were put into the attack, but more than half of the firearms in the entire city and even most of the elite archers would also support the counterattack.

In this way, not long after the team led by Xiao Xuan had just set up camp under the city, the defenders in the city organized a counterattack from the first time.

If it were a normal situation, no one would have been able to make this decision by attacking an elite enemy that was extremely rare in the legend with only about ten times the superiority of troops. However, when the team led by Xiao Xuan put on an unprecedentedly thin formation, it gave many defenders the opinion that the person who led this force was an extremely layman.

Under the normal logical system, no matter how powerful an army is, if it can't even form a decent horizontal line, and the average spacing seems to be more than a distance of about one person, then even if everyone is a top master in martial arts, there is no way to deal with the attack and charge of a decent army.

In order to further increase the chances of victory, the large army in the city also continued to prepare for artillery fire before counterattacking, and more than 1,000 or so defenders' artillery also continued to shell one after another at almost the maximum limit range, shooting countless rains of shotguns.